GE Industrial Solutions PicoTLynx 3A User Manual

GE

PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Features

 Compliant to RoHS EU Directive 2002/95/EC

(Z versions)

 Compatible in a Pb-free or SnPb reflow environment

(Z versions)

 Wide Input voltage range (2.4Vdc-5.5Vdc)

 Output voltage programmable from 0.6Vdc to 3.63

Vdc via external resistor

 Tunable Loop

TM

response

 Flexible output voltage sequencing EZ-SEQUENCE

– APTH versions

 Remote sense

 Fixed switching frequency

 Output overcurrent protection (non-latching)

 Overtemperature protection

 Remote On/Off

 Ability to sink and source current

 Cost efficient open frame design

 Small size: 12.2 mm x 12.2 mm x 6.25 mm

(0.48 in x 0.48 in x 0.25 in)

 Wide operating temperature range (-40°C to 85°C)

 UL* 60950-1Recognized, CSA

03 Certified, and VDE
Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

EZ-SEQUENCE

Applications

 Distributed power architectures

 Intermediate bus voltage applications

 Telecommunications equipment

 Servers and storage applications

 Networking equipment

 Industrial equipment

Vin+ Vout+

VIN

MODULE

Q1

SEQ

ON/OFF

GND

Cin

VOUT

SENSE

TRIM

RTUNE

CTUNE

RTrim

TM

Co

Data Sheet

to optimize dynamic output voltage

†

‡

0805:2001-12 (EN60950-1)

C22.2 No. 60950-1-

Description

The Pico TLynxTM 3A power modules are non-isolated dc-dc converters that can deliver up to 3A of output current. These
modules operate over a wide range of input voltage (V

= 2.4Vdc-5.5Vdc) and provide a precisely regulated output voltage

IN

from 0.6Vdc to 3.63Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage,
over current and overtemperature protection, and output voltage sequencing (APTH versions). A new feature, the Tunable

TM

Loop

, allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output

capacitance leading to savings on cost and PWB area.

* UL is a registered tradem ark of Underwriters Laboratories, Inc.

†

CSA is a registered trademark of Canadian Standards Association.

‡

VDE is a trademark of Verband Deutscher Elektrotechniker e.V.

** ISO is a registered trademark of the Internat ional Organization of Standards

September 11, 2013 ©2013 General Electric Company. All rights reserved.

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings
only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations
sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.

Parameter Device Symbol Min Max Unit

Input Voltage All V

Continuous

Sequencing Voltage APTH V

Operating Ambient Temperature All T

(see Thermal Considerations section)

Storage Temperature All T

IN

SEQ

A

stg

-0.3 6 Vdc

-0.3 V

-40 85 °C

-55 125 °C

iN, Max

Vdc

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage All VIN 2.4

Maximum Input Current All I

(VIN=2.4V to 5.5V, IO=I

Input No Load Current V

(VIN = 5.0Vdc, IO = 0, module enabled) V

Input Stand-by Current All I

(VIN = 5.0Vdc, module disabled)

Inrush Transient All I2t 1 A2s

Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V

5.5V

= I

; See Test Configurations)

, IO

Omax

Input Ripple Rejection (120Hz) All 40 dB

)

O, max

= 0.6 Vdc I

O,set

= 3.3Vdc I

O,set

=0 to

IN

All 25 mAp-p

IN,max

IN,No load

IN,No load

IN,stand-by

3.5 Adc

26 mA

75 mA

2.1 mA

⎯

CAUTION: This power module is not internally fused. An input line fuse must always be used.

This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of
sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum
safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating
of 5A (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc
input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for further
information.

5.5 Vdc

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 2

p

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point (with 0.5% tolerance for external
resistor used to set output voltage)

Output Voltage All V

(Over all operating input voltage, resistive load, and
temperature conditions until end of life)

Adjustment Range All V

Selected by an external resistor

All V

O, set

O, set

O

Output Regulation (for VO ≥ 2.5Vdc)

Line (VIN=V

Load (IO=I

IN, min

O, min

to V

) All

IN, max

to I

) All

O, max

Output Regulation (for VO < 2.5Vdc)

Line (VIN=V

Load (IO=I

Temperature (T

IN, min

O, min

to V

) All

IN, max

to I

) All

O, max

to T

ref=TA, min

) All

A, max

Remote Sense Range All 0.5 V

Output Ripple and Noise on nominal output

(VIN=V
ceramic ca

IN, nom

and IO=I

acitors)

O, min

to I

Co = 0.1μF // 10 μF

O, max

Peak-to-Peak (5Hz to 20MHz bandwidth) All

RMS 15 25 mV

External Capacitance1

Without the Tunable LoopTM

ESR ≥ 1 mΩ All C

O, max

With the Tunable LoopTM
ESR ≥ 0.15 mΩ All C

ESR ≥ 10 mΩ All C

Output Current All I

Output Current Limit Inception (Hiccup Mode ) All I

Output Short-Circuit Current All I

(VO≤250mV) ( Hiccup Mode )

Efficiency V

VIN= 3.3Vdc, TA=25°C V
IO=I

O, max , VO

= V

V

O,set

V
VIN= 5Vdc V

= 0.6Vdc η 81.2 %

O,set

= 1.2Vdc η 89.4 %

O, set

= 1.8Vdc η 91.4 %

O,set

= 2.5Vdc η 93.9 %

O,set

= 3.3Vdc η 94.4 %

O,set

Switching Frequency All f

O, max

O, max

o

O, lim

O, s/c

sw

Dynamic Load Response

(dIo/dt=10A/μs; VIN = 5V; V

= 1.5V, TA=25°C)

out

Load Change from Io= 0% to 50% of Io,max; Co = 0

Peak Deviation All V

Settling Time (Vo<10% peak deviation)

All t

pk

s

Load Change from Io= 50% to 0% of Io,max: , Co = 0

Peak Deviation All V

Settling Time (Vo<10% peak deviation)

All t

pk

s

-1.5 +1.5 % V

-3.0

⎯

+3.0 % V

0.6 3.63 Vdc

O, set

O, set

⎯

⎯

⎯

⎯

⎯

⎯

+0.4 % V

10 mV

10 mV

5 mV

0.4 % V

20 35 mV

O, set

O, set

pk-pk

rms

0

0

0

⎯

⎯

⎯

47 μF

1000 μF

3000 μF

0 3 Adc

200 % I

o,max

0.12 Adc

⎯

600

⎯

kHz

90 mV

20

μs

100 mV

20

μs

1

External capacitors may require using the new Tunable Loop

best transient response. See the Tunable Loop

TM

section for details.

TM

feature to ensure that the module is stable as well as getting the

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 3

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO=0.8I
3

Weight

, TA=40°C) Telcordia Issue 2 Method 1 Case

O, max

16,139,760 Hours

⎯

1.55 (0.0546)

⎯

g (oz.)

Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.

Parameter Device Symbol Min Typ Max Units

On/Off Signal Interface

(VIN=V

Signal referenced to GND)

Device is with suffix “4” – Positive Logic (See Ordering
Information)

Logic High (Module ON)

Input High Current All IIH

Input High Voltage All VIH

Logic Low (Module OFF)

Input Low Current All IIL

Input Low Voltage All VIL

Device Code with no suffix – Negative Logic (See Ordering
Information)

(On/OFF pin is open collector/drain logic input with

external pull-up resistor; signal referenced to GND)

Logic High (Module OFF)

Input High Current All IIH — — 1 mA

Input High Voltage All VIH VIN – 1.6 — V

Logic Low (Module ON)

Input low Current All IIL — — 0.2 mA

Input Low Voltage All VIL -0.2 — VIN – 1.6 Vdc

Turn-On Delay and Rise Times

(VIN=V
Case 1: On/Off input is enabled and then input power is

applied (delay from instant at which V
10% of V
Case 2: Input power is applied for at least one second and
then the On/Off input is enabled (delay from instant at
which Von/Off is enabled until V

Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)

Output voltage overshoot (TA = 25oC 3.0 % V
VIN= V
With or without maximum external capacitance

Over Temperature Protection All T

(See Thermal Considerations section)

Sequencing Delay time

Delay from V
pin

Tracking Accuracy (Power-Up: 2V/ms) APTH VSEQ –Vo 100 mV

(Power-Down: 2V/ms) APTH VSEQ –Vo 100 mV

(V

IN, min

IN, min

IN, nom

IN, min

to V

to V

, IO=I

o, set)

to V

IN, max

; open collector or equivalent,

IN, max

to within ±1% of steady state)

O, max , VO

o = 10% of Vo, set)

= I

IN, max,IO

to application of voltage on SEQ

IN, min

; I

O, min

to I

O, min

O, max

to I

VSEQ < Vo)

O, max

1.2

⎯

⎯

10 µA

V

V

IN,max

⎯ ⎯

-0.3

⎯

0.3 mA

0.3 V

Vdc

IN, max

= V

until Vo =

IN

IN, min

All Tdelay — 2 — msec

All Tdelay — 2 — msec

All Trise

— 5 — msec

O, set

)

140 °C

APTH Ts

ref

EQ-delay 10 msec

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 4

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Feature Specifications (cont.)

Parameter Device Symbol Min Typ Max Units

Input Undervoltage Lockout

Turn-on Threshold All

Turn-off Threshold All

Hysteresis All

2.2 Vdc

1.75 Vdc

0.08 0.2 Vdc

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 5

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 0.6Vo and at 25oC.

86

84

82

80

78

76

74

EFFICIENCY, η (%)

72

70

00.511.522.53

Vin=2.4V

Vin=3.3V

Vin=5.5V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 1. Converter Efficiency versus Output Current.

OUTPUT CURRENT, Io (A)

Figure 2. Derating Output Current versus Ambient
Temperature and Airflow.

3.5

3

2.5

2

1. 5

1

0.5

0

20 30 40 50 60 70 80 90

0 LFM

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 3. Typical output ripple and noise (V

(V) (200mV/div)

O

(V) (2V/div) V

ON/OFF

ON/OFF VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div) TIME, t (1ms/div)

IN = 5V, Io = Io,max).

Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max).

(V) (100mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 4. Transient Response to Dynamic Load Change
from 0% to 50% to 0% with V

(V) (200mV/div)

O

(V) (2V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

IN

=5V.

Figure 6. Typical Start-up Using Input Voltage (V

o,max).

= I

IN = 5V, Io

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 6

OUTPUT

CURRENT

OUTPUT

VOLTAGE

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Characteristic Curves (continued)

The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 1.2Vo and at 25oC.

95

90

85

80

75

EFFICIENCY, η (%)

70

0 0 .5 1 1.5 2 2.5 3

Vin=3.3V

Vin=2.4V

Vin=5.5V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 7. Converter Efficiency versus Output Current.

Figure 8. Derating Output Current versus Ambient
Temperature and Airflow.

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

0 LFM

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 9. Typical output ripple and noise (V

(V) (500mV/div)

O

(V) (2V/div) V

ON/OFF

ON/OFF VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div) TIME, t (1ms/div)

IN = 5V, Io = Io,max).

(V) (100mV/div)

O

,

(A) (1Adiv) V

O

I

Figure 10. Transient Response to Dynamic Load Change
from 0% to 50% to 0% with V

(V) (500mV/div)

O

(V) (2V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

IN

=5V.

Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 12. Typical Start-up Using Input Voltage (V

o = Io,max).

I

IN = 5V,

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 7

OUT

PUT

CURRENT

OUTPUT

VOLTAGE

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Characteristic Curves (continued)

The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 1.8Vo and at 25oC.

95

90

85

80

75

EFFICIENCY, η (%)

70

0 0.5 1 1.5 2 2.5 3

Vin=2.4V

Vin=3.3V

Vin=5.5V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 13. Converter Efficiency versus Output Current.

Figure 14. Derating Output Current versus Ambient
Temperature and Airflow.

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

0 LFM

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 15. Typical output ripple and noise (V

(V) (500mV/div)

O

(V) (2V/div) V

ON/OFF

ON/OFF VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div) TIME, t (1ms/div)

IN = 5V, Io = Io,max).

(V) (200mV/div)

O

,

(A) (1Adiv) V

O

I

Figure 16. Transient Response to Dynamic Load Change
from 0% to 50% to 0% with V

(V) (1V/div)

O

(V) (2V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

IN

=5V.

Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 18. Typical Start-up Using Input Voltage (V

o = Io,max).

I

IN = 5V,

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 8

OUTPUT

CURRENT

OUTPUT

VOLTAGE

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Characteristic Curves (continued)

The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 2.5Vo and at 25oC.

100

95

90

85

80

EFFICIENCY, η (%)

75

70

0 0.5 1 1.5 2 2.5 3

Vin=3V

Vin=3.3V

Vin=5.5V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 19. Converter Efficiency versus Output Current.

Figure 20. Derating Output Current versus Ambient
Temperature and Airflow.

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

20 30 40 50 60 70 80 90

0 LFM

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 21. Typical output ripple and noise (V

(V) (1V/div)

O

(V) (5V/div) V

ON/OFF

ON/OFF VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div) TIME, t (1ms/div)

IN = 5V, Io = Io,max).

(V) (200mV/div)

O

,

(A) (1Adiv) V

O

I

Figure 22. Transient Response to Dynamic Load Change
from 0% to 50% to 0% with V

(V) (1V/div)

O

(V) (2V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

IN

=5V.

Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 24. Typical Start-up Using Input Voltage (V

o = Io,max).

I

IN = 5V,

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 9

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Characteristic Curves (continued)

The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 3.3Vo and at 25oC.

100

95

90

85

80

75

EFFICIENCY, η (%)

70

0 0.5 1 1.5 2 2.5 3

Vin=4V

Vin=5V

Vin=5.5V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 25. Converter Efficiency versus Output Current.

Figure 26. Derating Output Current versus Ambient
Temperature and Airflow.

3.5

3

2.5

2

1. 5

1

0.5

OUTPUT CURRENT, Io (A)

0

0 LFM

20 30 40 50 60 70 80 90

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 27. Typical output ripple and noise (V

(V) (1V/div)

O

(V) (2V/div) V

ON/OFF

ON/OFF VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div) TIME, t (1ms/div)

IN = 5V, Io = Io,max).

Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max).

(V) (200mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 28. Transient Response to Dynamic Load Change
from 0% 50% to 0% with V

(V) (1V/div)

O

(V) (2V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

Figure 30. Typical Start-up Using Input Voltage (V

o = Io,max).

I

=5V.

IN

IN = 5V,

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 10

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Test Configurations

TO OSCILLOSCOPE

NOTE: Measure input reflected ripple current with a simulated

Figure 31. Input Reflected Ripple Current Test Setup.

Vo+

COM

NOTE : All voltage m easurements to be take n at the modu le

Figure 32. Output Ripple and Noise Test Setup.

Figure 33. Output Voltage and Efficiency Test Setup.

Efficiency

TM

3A: Non-Isolated DC-DC Power Modules

CURRENT PROBE

L

TEST

1μH

CS 1000μF

BATTERY

source inductance (L
possible battery im pedance. Measure current as shown
above.

termin als, as shown ab ove. If soc kets are use d then
Kelvin connections are required at the module terminals
to av oid me asurement error s due to soc ket co ntact
resistance.

R

distribution

R

distribution

NOTE: All volt age meas uremen ts to be t aken at t he modul e

Electrolytic

E.S.R.<0.1Ω

@ 20°C 100kH z

TEST

COPPER STRIP

0.1u F

R

contact

R

contact

terminals , as shown above. If socket s are us ed then
Kelvin conn ections are requir ed at the m odule termi nals
to avoid measur ement err ors due to soc ket contact
resistance.

η

VIN(+)

V

IN

COM

V

O

=

VIN. I

CIN

2x100μF
Tantalum

) of 1μH. Capac itor CS offsets

10uF

GROUND PLANE

V

O

V

O

COM

. I

O

x 100 %

IN

VIN(+)

COM

RESISTIVE

LOAD

SCOP E USING
BNC SOCK ET

R

contact Rdistribution

R

contact Rdistribution

Design Considerations

Input Filtering

The Pico TLynxTM 3A module should be connected to a low ac­impedance source. A highly inductive source can affect the
stability of the module. An input capacitance must be placed
directly adjacent to the input pin of the module, to minimize
input ripple voltage and ensure module stability.

To minimize input voltage ripple, low-ESR ceramic capacitors
are recommended at the input of the module. Figure 34 shows
the input ripple voltage for various output voltages at 3A of
load current with 1x22 µF or 2x22 µF ceramic capacitors and
an input of 5V. Figure 35 shows data for the 3.3Vin case, with
1x22µF or 2x22µF of ceramic capacitors at the input.

R

LOAD

60

50

40

30

20

10

Input Ripple Voltage (mVp-p)

0

0.5 1 1.5 2 2.5 3 3.5

Output Voltage (Vdc)

Figure 34. Input ripple voltage for various output voltages
with 1x22 µF or 2x22 µF ceramic capacitors at the input (3A
load). Input voltage is 5V.

60

50

40

30

20

10

Input Ripple Voltage (mVp-p)

0

0.5 1 1.5 2 2.5 3

Output Voltage (Vdc)

Figure 35. Input ripple voltage in mV, p-p for various output
voltages with 1x22 µF or 2x22 µF ceramic capacitors at the
input (3A load). Input voltage is 3.3V.

Data Sheet

1x22uF

2x22uF

1x22uF

2x22uF

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 11

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Output Filtering

The Pico TLynxTM 3A modules are designed for low output
ripple voltage and will meet the maximum output ripple
specification with 0.1 µF ceramic and 10 µF ceramic
capacitors at the output of the module. However, additional
output filtering may be required by the system designer for a
number of reasons. First, there may be a need to further
reduce the output ripple and noise of the module. Second,
the dynamic response characteristics may need to be
customized to a particular load step change.

To reduce the output ripple and improve the dynamic
response to a step load change, additional capacitance at
the output can be used. Low ESR ceramic and polymer
capacitors are recommended to improve the dynamic
response of the module. Figure 36 provides output ripple
information for different external capacitance values at
various Vo and for load currents of 3A while maintaining an
input voltage of 5V. Fig 37 shows the performance with a

3.3V input. For stable operation of the module, limit the
capacitance to less than the maximum output capacitance
as specified in the electrical specification table. Optimal
performance of the module can be achieved by using the
Tunable Loop feature described later in this data sheet.

30

25

20

15

10

Ripple(mVp-p)

5

0

0.5 1 1.5 2 2.5 3 3.5

Figure 36. Output ripple voltage for various output
voltages with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF
ceramic capacitors at the output (3A load). Input voltage is
5V.

TM

3A: Non-Isolated DC-DC Power Modules

20

15

10

Ripple(mVp-p)

5

0

0.511.522.53

Figure 37. Output ripple voltage for various output voltages
with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic
capacitors at the output (3A load). Input voltage is 3.3V.

Safety Considerations

For safety agency approval the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standards, i.e., UL
60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12
(EN60950-1) Licensed.

For the converter output to be considered meeting the

1x10uF External Cap
1x47uF External cap
2x47uF External Cap
4x47uF external Cap

requirements of safety extra-low voltage (SELV), the input must
meet SELV requirements. The power module has extra-low
voltage (ELV) outputs when all inputs are ELV.

The input to these units is to be provided with a fast-acting
fuse with a maximum rating of 5A in the positive input lead

Feature Descriptions

Output Voltage(Volts)

Remote On/Off

The Pico TLynxTM 3A modules feature an On/Off pin for remote
On/Off operation. Two On/Off logic options are available. In
the Positive Logic On/Off option, (device code suffix “4”- see
Ordering Information), the module turns ON during a logic
High on the On/Off pin and turns OFF during a logic Low. With
the Negative Logic On/Off option, (no device code suffix, see
Ordering Information), the module turns OFF during logic High
and ON during logic Low. The On/Off signal is always
referenced to ground. For either On/Off logic option, leaving
the On/Off pin disconnected will turn the module ON when
input voltage is present.

For positive logic modules, the circuit configuration for using
the On/Off pin is shown in Figure 38. When the external
transistor Q1 is in the OFF state, Q2 is ON, the internal PWM
Enable signal is pulled low and the module is ON. When
transistor Q1 is turned ON, the On/Off pin is pulled low, Q2 is
turned off and the internal PWM Enable signal is pulled high
through the 100K internal pull-up resistor and the module is
OFF.

Data Sheet

1x10uF External Cap
1x47uF External cap
2x47uF External Cap
4x47uF external Cap

Output Voltage(Volts)

.

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 12

_

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

VIN+

ON/OFF

Q1

GND

Figure 38. Circuit configuration for using positive On/Off
logic.

For negative logic On/Off modules, the circuit configuration is
shown in Fig. 39. The On/Off pin should be pulled high with
an external pull-up resistor (suggested value for the 2.4V to

5.5Vin range is 3.6Kohms). When transistor Q1 is in the OFF
state, the On/Off pin is pulled high and the module is OFF.
The On/Off threshold for logic High on the On/Off pin
depends on the input voltage and its minimum value is V

1.6V. To turn the module ON, Q1 is turned ON pulling the
On/Off pin low.

TM

3A: Non-Isolated DC-DC Power Modules

thermal reference point T

MODULE

100K

20K

intended as a guarantee that the unit will survive
temperatures beyond its rating. Once the unit goes into
thermal shutdown it will then wait to cool before attempting to
restart.

Input Undervoltage Lockout

I

ON/OFF

+

V

ON/OFF

20K

PWM Enable

Q2

–

IN

At input voltages below the input undervoltage lockout limit,
the module operation is disabled. The module will begin to
operate at an input voltage above the undervoltage lockout
turn-on threshold.

Output Voltage Programming

The output voltage of the Pico TLynxTM 3A modules can be
programmed to any voltage from 0.6Vdc to 3.63Vdc by
connecting a resistor between the Trim and GND pins of the
module. Certain restrictions apply on the output voltage set
point depending on the input voltage. These are shown in the
Output Voltage vs. Input Voltage Set Point Area plot in Fig. 40.
The Upper Limit curve shows that the entire output voltage
range is available with the maximum input voltage of 5.5V. The
Lower Limit curve shows that for output voltages of 1.8V and
higher, the input voltage needs to be larger than the minimum
of 2.4V.

6

5

4

Data Sheet

. The thermal shutdown is not

ref

Upper Limit

VIN+

MODULE

Rpullup

I

ON/OFF

GND

Figure 39. Circuit configuration for using negative On/Off
logic.

ON/OFF

+

V

ON/OFF

Q1

_

2.05K

20K

100K

PWM Enable

Overcurrent Protection

To provide protection in a fault (output overload) condition,
the unit is equipped with internal current-limiting circuitry
and can endure current limiting continuously. At the point of
current-limit inception, the unit enters hiccup mode. The unit
operates normally once the output current is brought back
into its specified range.

Overtemperature Protection

To provide protection in a fault condition, the unit is equipped
with a thermal shutdown circuit. The unit will shutdown if the
overtemperature threshold of 140

o

C is exceeded at the

3

2

Input Voltage (v)

1

0

0.5 1 1.5 2 2.5 3 3.5 4

Output Voltage (V)

Figure 40. Output Voltage vs. Input Voltage Set Point Area
plot showing limits where the output voltage can be set for
different input voltages.

Without an external resistor between Trim and GND pins, the
output of the module will be 0.6Vdc. To calculate the value of
the trim resistor, Rtrim for a desired output voltage, use the
following equation:

= k

Rtrim

Rtrim is the external resistor in kΩ

Vo is the desired output voltage.

Table 1 provides Rtrim values required for some common
output voltages.

Lower Limit




()

Vo





2.1

−

6.0

Ω




Table 1

V

(V) Rtrim (KΩ)

O, set

0.6 Open

1.0 3.0

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 13

GE

+

and R

TM

3A: Non-Isolated DC-DC Power Modules

1.2 2.0

1.5 1.333

1.8 1.0

2.5 0.632

3.3 0.444

V

+

O

SENS E

TRIM

GND

R

trim

LOAD

Fi

Figure 42. Circuit Configuration for margining Output
voltage

Monotonic Start-up and Shutdown

The Pico TLynx
shutdown behavior for any combination of rated input voltage,
output current and operating temperature range.

Startup into Pre-biased Output

The 5.5V Pico TLynxTM 6A modules can start into a prebiased
output as long as the prebias voltage is 0.5V less than the set
output voltage. Note that prebias operation is not supported
when output voltage sequencing is used.

Output Voltage Sequencing

The Pico TLynxTM modules include a sequencing feature, EZ­SEQUENCE that enables users to implement various types of
output voltage sequencing in their applications. This is
accomplished via an additional sequencing pin. When not
using the sequencing feature, either tie the SEQ pin to V
leave it unconnected.

When an analog voltage is applied to the SEQ pin, the output
voltage tracks this voltage until the output reaches the set­point voltage. The final value of the SEQ voltage must be set
higher than the set-point voltage of the module. The output
voltage follows the voltage on the SEQ pin on a one-to-one
volt basis. By connecting the SEQ pins of multiple modules
together, all modules can track their output voltages to the
voltage applied on the SEQ pin.

For proper voltage sequencing, first, input voltage is applied to
the module. The On/Off pin of the module is left unconnected
(or tied to GND for negative logic modules or tied to V
positive logic modules) so that the module is ON by default.
After applying input voltage to the module, a minimum
10msec delay is required before applying voltage on the SEQ
pin. This delay gives the module enough time to complete its
internal power-up soft-start cycle. During the delay time, the
SEQ pin should be held close to ground (nominally 50mV ± 20
mV). This is required to keep the internal op-amp out of

margin-down

, from

margin-up

margin-down

, from the

for a specific output voltage and %

MODULE

TM

3A modules have monotonic start-up and

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

By using a ±0.5% tolerance trim resistor with a TC of
±25ppm, a set point tolerance of ±1.5% can be achieved as
specified in the electrical specification. The POL
Programming Tool available at www.lineagepower.com
under the Design Tools section, helps determine the required
trim resistor needed for a specific output voltage.

V

IN

ON/OFF

gure 41. Circuit configuration for programming output
voltage using an external resistor.

Remote Sense

The Pico TLynxTM 3A modules have a Remote Sense feature
to minimize the effects of distribution losses by regulating
the voltage at the SENSE pin. The voltage between the
SENSE pin and VOUT pin must not exceed 0.5V. Note that the
output voltage of the module cannot exceed the specified
maximum value. This includes the voltage drop between the
SENSE and Vout pins. When the Remote Sense feature is not
being used, connect the SENSE pin to the VOUT pin.

Voltage Margining

Output voltage margining can be implemented in the Pico

TM

TLynx

3A modules by connecting a resistor, R
the Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, R
Trim pin to output pin for margining-down. Figure 42 shows
the circuit configuration for output voltage margining. The
POL Programming Tool, available at www.lineagepower.com
under the Design Tools section, also calculates the values of
R

margin-up

margin. Please consult your local GE technical
representative for additional details.

Data Sheet

Vo

Rmargin-down

Q2

Trim

Rmargin-up

Rtrim

Q1

GND

IN or

IN for

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 14

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

saturation thus preventing output overshoot during the start
of the sequencing ramp. By selecting resistor R1 (see fig. 43)
according to the following equation

the voltage at the sequencing pin will be 50mV when the
sequencing signal is at zero.

VIN+

SEQ

TM

3A: Non-Isolated DC-DC Power Modules

External capacitors are usually added to the output of the
module for two reasons: to reduce output ripple and noise
(see Figures 36 and 37) and to reduce output voltage

R

1−=

24950

V

IN

ohms,

05.0

deviations from the steady-state value in the presence of
dynamic load current changes. Adding external capacitance
however affects the voltage control loop of the module,
typically causing the loop to slow down with sluggish
response. Larger values of external capacitance could also
cause the module to become unstable.

The Tunable Loop
voltage control loop to match the filter network connected to

MODULE

the output of the module. The Tunable Loop is implemented
by connecting a series R-C between the SENSE and TRIM pins
of the module, as shown in Fig. 44. This R-C allows the user to
externally adjust the voltage loop feedback compensation of
the module.

R1

499K

10K

+

OUT

-

TM

Data Sheet

allows the user to externally adjust the

VOUT

SENSE

RTUNE

GND

Figure 43. Circuit showing connection of the sequencing
signal to the SEQ pin.

After the 10msec delay, an analog voltage is applied to the
SEQ pin and the output voltage of the module will track this
voltage on a one-to-one volt bases until the output reaches
the set-point voltage. To initiate simultaneous shutdown of
the modules, the SEQ pin voltage is lowered in a controlled
manner. The output voltage of the modules tracks the
voltages below their set-point voltages on a one-to-one
basis. A valid input voltage must be maintained until the
tracking and output voltages reach ground potential.

TM

When using the EZ-SEQUENCE

feature to control start-up
of the module, pre-bias immunity during start-up is disabled.
The pre-bias immunity feature of the module relies on the
module being in the diode-mode during start-up. When
using the EZ-SEQUENCE

TM

feature, modules goes through an
internal set-up time of 10msec, and will be in synchronous
rectification mode when the voltage at the SEQ pin is applied.
This will result in the module sinking current if a pre-bias
voltage is present at the output of the module. When pre­bias immunity during start-up is required, the EZ­SEQUENCE
guidelines on using the EZ-SEQUENCE

TM

feature must be disabled. For additional

TM

feature please refer
to Application Note AN04-008 “Application Guidelines for
Non-Isolated Converters: Guidelines for Sequencing of
Multiple Modules”, or contact the GE technical representative
for additional information.

Tunable Loop

The 5V Pico TLynxTM 3A modules have a new feature that
optimizes transient response of the module called Tunable

TM

.

Loop

MODULE

C O

CTUNE

TRIM

and C

RTrim

for different output

TUNE

TUME

GND

Figure. 44. Circuit diagram showing connection of R
and C

Recommended values of R

to tune the control loop of the module.

TUNE

TUNE

capacitor combinations are given in Tables 2, 3, 4 and 5.
Tables 2 and 4 show the recommended values of R

for different values of ceramic output capacitors up to

C

TUNE

TUNE

and

470uF that might be needed for an application to meet
output ripple and noise requirements for 5Vin and 3.3Vin
respectively. Selecting R

TUNE

and C

according to Table 2

TUNE

will ensure stable operation of the module.

In applications with tight output voltage limits in the presence
of dynamic current loading, additional output capacitance
will be required. Tables 3 and 5 list recommended values of
R

TUNE

and C

in order to meet 2% output voltage deviation

TUNE

limits for some common output voltages in the presence of a

1.5A to 3A step change (50% of full load), with an input
voltage of 5Vin and 3.3Vin respectively

Please contact your GE technical representative to obtain
more details of this feature as well as for guidelines on how to
select the right value of external R-C to tune the module for
best transient performance and stable operation for other
output capacitance values or input voltages other than 3.3 or
5V.

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 15

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Table 2. General recommended values of of R
for Vin=5V and various external ceramic capacitor
combinations.

Co

R

TUNE

C

TUNE

Table 3. Recommended values of R
transient deviation of ≤2% of Vout for a 1.5A step load with
Vin=5V.

Vo 3.3V 2.5V 1.8V 1.2V 0.6V

Co

R

TUNE

C

TUNE

ΔV

Table 4. General recommended values of of R
for Vin=3.3V and various external ceramic capacitor
combinations.

Co

R

TUNE

C

TUNE

Table 5. Recommended values of R
transient deviation of ≤2% of Vout for a 1.5A step load with
Vin=3.3V.

Vo 2.5V 1.8V 1.2V 0.6V

Co

R

TUNE

C

TUNE

ΔV

TM

3A: Non-Isolated DC-DC Power Modules

and C

TUNE

1x47μF 2x47μF 4x47μF 6x47μF 10x47μF

33 33 33 33 33

6800pF 15nF 33nF 47nF 56nF

and C

TUNE

1 x 47μF 2 x 47μF 2 x 47μF 4 x 47μF

33 33 33 33 33

6800pF 15nF 15nF 33nF 82nF

59mV 35mV 35mV 21mV 12mV

1x47μF 2x47μF 4x47μF 6x47μF 10x47μF

33 33 33 33 33

15nF 27nF 47nF 56nF 68nF

and C

TUNE

2 x 47μF 2 x 47μF 4 x 47μF

33 33 33 33

22nF 27nF 47nF 150nF

46mV 32mV 24mV 12mV

+330μF Polymer

TUNE

2 x 47μF

+330μF

Polymer

TUNE

TUNE

4 x 47μF

to obtain

and C

to obtain

TUNE

TUNE

Data Sheet

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 16

A

W

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Thermal Considerations

Power modules operate in a variety of thermal environments;
however, sufficient cooling should always be provided to help
ensure reliable operation.

Considerations include ambient temperature, airflow, module
power dissipation, and the need for increased reliability. A
reduction in the operating temperature of the module will
result in an increase in reliability. The thermal data presented
here is based on physical measurements taken in a wind
tunnel. The test set-up is shown in Figure 45. The preferred
airflow direction for the module is shown in Figure 46.

ind Tunnel

PWBs

TM

3A: Non-Isolated DC-DC Power Modules

Figure 46. Preferred airflow direction and location of hot-

25.4_
(1.0)

Power Module

spot of the module (Tref).

Data Sheet

76.2_

(3.0)

x

Probe Location

12.7_

(0.50)

for measuring
airflow and
ambient
temperature

ir

flow

Figure 45. Thermal Test Setup.

The thermal reference points, T
are shown in Figure 46. For reliable operation the
temperatures at these points should not exceed 125
output power of the module should not exceed the rated
power of the module (Vo,set x Io,max).

Please refer to the Application Note “Thermal Characterization
Process For Open-Frame Board-Mounted Power Modules” for
a detailed discussion of thermal aspects including maximum
device temperatures.

used in the specifications

ref

o

C. The

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 17

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Shock and Vibration

The ruggedized (-D version) of the modules are designed to withstand elevated levels of shock and vibration to be able to operate in
harsh environments. The ruggedized modules have been successfully tested to the following conditions:

Non operating random vibration:

Random vibration tests conducted at 25C, 10 to 2000Hz, for 30 minutes each level, starting from 30Grms (Z axis) and up to 50Grms
(Z axis). The units were then subjected to two more tests of 50Grms at 30 minutes each for a total of 90 minutes.

Operating shock to 40G per Mil Std. 810F, Method 516.4 Procedure I:

The modules were tested in opposing directions along each of three orthogonal axes, with waveform and amplitude of the shock
impulse characteristics as follows:

All shocks were half sine pulses, 11 milliseconds (ms) in duration in all 3 axes.

Units were tested to the Functional Shock Test of MIL-STD-810, Method 516.4, Procedure I - Figure 516.4-4. A shock magnitude of
40G was utilized. The operational units were subjected to three shocks in each direction along three axes for a total of eighteen
shocks.

Operating vibration per Mil Std 810F, Method 514.5 Procedure I:

The ruggedized (-D version) modules are designed and tested to vibration levels as outlined in MIL-STD-810F, Method 514.5, and
Procedure 1, using the Power Spectral Density (PSD) profiles as shown in Table 6 and Table 7 for all axes. Full compliance with
performance specifications was required during the performance test. No damage was allowed to the module and full compliance
to performance specifications was required when the endurance environment was removed. The module was tested per MIL-STD­810, Method 514.5, Procedure I, for functional (performance) and endurance random vibration using the performance and
endurance levels shown in Table 6 and Table 7 for all axes. The performance test has been split, with one half accomplished before
the endurance test and one half after the endurance test (in each axis). The duration of the performance test was at least 16
minutes total per axis and at least 120 minutes total per axis for the endurance test. The endurance test period was 2 hours
minimum per axis.

Frequency (Hz)

10 1.14E-03 170 2.54E-03 690 1.03E-03
30 5.96E-03 230 3.70E-03 800 7.29E-03
40 9.53E-04 290 7.99E-04 890 1.00E-03
50 2.08E-03 340 1.12E-02 1070 2.67E-03

90 2.08E-03 370 1.12E-02 1240 1.08E-03
110 7.05E-04 430 8.84E-04 1550 2.54E-03
130 5.00E-03 490 1.54E-03 1780 2.88E-03
140 8.20E-04 560 5.62E-04 2000 5.62E-04

Frequency (Hz)

10 0.00803 170 0.01795 690 0.00727
30 0.04216 230 0.02616 800 0.05155
40 0.00674 290 0.00565 890 0.00709
50 0.01468 340 0.07901 1070 0.01887

90 0.01468 370 0.07901 1240 0.00764
110 0.00498 430 0.00625 1550 0.01795
130 0.03536 490 0.01086 1780 0.02035
140 0.0058 560 0.00398 2000 0.00398

Table 6: Performance Vibration Qualification - All Axes

PSD Level

(G2/Hz)

Table 7: Endurance Vibration Qualification - All Axes

PSD Level

(G2/Hz)

Frequency (Hz)

Frequency (Hz)

PSD Level

(G2/Hz)

PSD Level

(G2/Hz)

Frequency (Hz)

Frequency (Hz)

PSD Level

(G2/Hz)

PSD Level

(G2/Hz)

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 18

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Example Application Circuit

Requirements:
Vin: 3.3V
Vout: 1.8V
Iout: 2.25A max., worst case load transient is from 1.5A to 2.25A

ΔVout: 1.5% of Vout (27mV) for worst case load transient
Vin, ripple 1.5% of Vin (50mV, p-p)

Vin+

TM

3A: Non-Isolated DC-DC Power Modules

VIN

VOUT

SENSE

RTUNE

+

CI2

CI1

MODULE

CTUNE

Data Sheet

Vout+

CO1

Q3

ON/OFF

GND

CI1 22μF/6.3V ceramic capacitor
CI2 47μF/6.3V bulk electrolytic
CO1 2 x 47μF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)
CTune 27nF ceramic capacitor (can be 1206, 0805 or 0603 size)
RTune 33 ohms SMT resistor (can be 1206, 0805 or 0603 size)
RTrim 1kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)

TRIM

RTrim

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 19

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Mechanical Outline

Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

PIN FUNCTION

1 ON/OFF
2 VIN
3 GND
4 VOUT
5 SENSE
6 TRIM
7 GND
8 NC

PIN 10

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 20

PIN 7

PIN 8

9 SEQ

10 NC

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Recommended Pad Layout

Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

PIN 10

PIN 8 PIN 7

PIN FUNCTION

1 ON/OFF
2 VIN
3 GND
4 VOUT
5 SENSE
6 TRIM
7 GND
8 NC
9 SEQ

10 NC

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 21

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Packaging Details

The Pico TLynxTM 3A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 400 modules per reel.

All Dimensions are in millimeters and (in inches).

Reel Dimensions:
Outside Dimensions: 330.2 mm (13.00)
Inside Dimensions: 177.8 mm (7.00”)
Tape Width: 24.00 mm (0.945”)

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 22

GE

PicoTLynx

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Surface Mount Information

Pick and Place

The Pico TLynxTM 3A modules use an open frame construction
and are designed for a fully automated assembly process. The
modules are fitted with a label designed to provide a large
surface area for pick and place operations. The label meets all
the requirements for surface mount processing, as well as
safety standards, and is able to withstand reflow temperatures
of up to 300
as product code, serial number and the location of manufacture.

Nozzle Recommendations

The module weight has been kept to a minimum by using open
frame construction. Variables such as nozzle size, tip style,
vacuum pressure and placement speed should be considered to
optimize this process. The minimum recommended inside
nozzle diameter for reliable operation is 3mm. The maximum
nozzle outer diameter, which will safely fit within the allowable
component spacing, is 7 mm.

Bottom Side / First Side Assembly

This module is not recommended for assembly on the bottom
side of a customer board. If such an assembly is attempted,
components may fall off the module during the second reflow
process. If assembly on the bottom side is planned, please
contact GE for special manufacturing process instructions.

Only ruggedized (-D version) modules with additional epoxy will
work with a customer’s first side assembly. For other versions,
first side assembly should be avoided

Lead Free Soldering

The Pico TLynxTM 3A modules are lead-free (Pb-free) and RoHS
compliant and fully compatible in a Pb-free soldering process.
Failure to observe the instructions below may result in the
failure of or cause damage to the modules and can adversely
affect long-term reliability.

TM

3A: Non-Isolated DC-DC Power Modules

o

C. The label also carries product information such

The recommended storage environment and handling
procedures for moisture-sensitive surface mount
packages is detailed in J-STD-033 Rev. A (Handling,
Packing, Shipping and Use of Moisture/Reflow Sensitive
Surface Mount Devices). Moisture barrier bags (MBB) with
desiccant are required for MSL ratings of 2 or greater.
These sealed packages should not be broken until time of
use. Once the original package is broken, the floor life of
the product at conditions of ≤ 30°C and 60% relative
humidity varies according to the MSL rating (see J-STD­033A). The shelf life for dry packed SMT packages will be a
minimum of 12 months from the bag seal date, when
stored at the following conditions: < 40° C, < 90% relative
humidity.

300

Per J-STD-020 Rev. C

250

200

150

Heat ing Zone

1°C/Second

100

Reflow Temp (°C)

50

0

gure 47. Recommended linear reflow profile using
Sn/Ag/Cu solder.

Post Solder Cleaning and Drying Considerations

Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect both
the reliability of a power module and the testability of the
finished circuit-board assembly. For guidance on
appropriate soldering, cleaning and drying procedures,
refer to Board Mounted Power Modules: Soldering and
Cleaning Application Note (AN04-001).

Data Sheet

Peak Temp 260°C

* Min. Time Above 235°C
15 Seconds

*Time Above 217°C

60 Seconds

Reflow Time (Seconds)

Cooling

Zone

Fi

Pb-free Reflow Profile

Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for Nonhermetic Solid
State Surface Mount Devices) for both Pb-free solder profiles
and MSL classification procedures. This standard provides a
recommended forced-air-convection reflow profile based on the
volume and thickness of the package (table 4-2). The suggested
Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear
reflow profile using Sn/Ag/Cu solder is shown in Fig. 47.
Soldering outside of the recommended profile requires testing to
verify results and performance. For questions regarding Land
grid array(LGA) soldering, solder volume; please contact GE for
special manufacturing process instructions

MSL Rating

The Pico TLynxTM 3A modules have a MSL rating of 2a.

Storage and Handling

September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 23

GE

PicoTLynx

TM

3A: Non-Isolated DC-DC Power Modules

Data Sheet

2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current

Ordering Information

Please contact your GE Sales Representative for pricing, availability and optional features.

Table 8. Device Codes

Device Code

APXH003A0X-SRZ 2.4 – 5.5Vdc 0.6 – 3.63Vdc 3A Negative No CC109113313

APXH003A0X4-SRZ 2.4 – 5.5Vdc 0.6 – 3.63Vdc 3A Positive No CC109113321

APXH003A0X-SRDZ 2.4 – 5.5Vdc 0.6 – 3.63Vdc 3A Negative No CC109158795

APTH003A0X-SRZ 2.4 – 5.5Vdc 0.6 – 3.63Vdc 3A Negative Yes CC109113338

APTH003A0X4-SRZ 2.4 – 5.5Vdc 0.6 – 3.63Vdc 3A Positive Yes CC109113346

APTH003A0X-SR 2.4 – 5.5Vdc 0.6 – 3.63Vdc 3A Negative Yes CC109147484

Table 9. Coding Scheme

TLynx

family

Sequencing

feature.

AP T H 003A0 X 4 -SR -D Z

T = with Seq.

X = w/o Seq.

Input

Voltage Range

Input

voltage

range

H = 2.4 –

5.5V

Output

current

3.0A X =

Output

Voltage

Output
voltage

programmable

output

Output

Current

On/Off logic Options ROHS Compliance

4 = positive
No entry =
negative

On/Off

Logic

S = Surface

Mount

R =

Tape&Reel

Sequencing Comcodes

D = 105C
operating

ambient, 40G

operating

shock as per

MIL Std 810F

Z = ROHS6

Contact Us

For more information, call us at

USA/Canada:

[phone], or [phone]

Asia-Pacific:

+86.021.54279977*808

Europe, Middle-East and Africa:

+49.89.74423-206

India:
+91.80.28411633

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