GE Industrial Solutions 3A Digital PicoDLynx User Manual

A

A

V

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

RoHS Compliant

Applications

Industrial equipment

Distributed power architectures

Intermediate bus voltage applications

Telecommunications equipment

Vout+Vin+

Co

GND

Cin

VIN
PGOOD

MODULE

SEQ

CLK
DATA

SMBALRT#

ON/OFF

SYNC

GND

VOUT

VS+

TRIM

DDR0
DDR1

SIG_GND

S-

RADDR1

RTUNE

CTUNE

RTrim

RADDR0

Features

• Compliant to RoHS II EU “Directive 2011/65/EU”

• Compatible in a Pb-free or SnPb reflow environment

• Compliant to IPC-9592 (September 2008), Category 2,

Class II

• DOSA based

• Wide Input voltage range (3Vdc-14.4Vdc)

• Output voltage programmable from 0.6Vdc to 5.5Vdc via

external resistor. Digitally adjustable down to 0.45Vdc

TM #

• Digital interface through the PMBus

• Tunable Loop

TM

to optimize dynamic output voltage

response

• Flexible output voltage sequencing EZ-SEQUENCE

• Power Good signal

• Fixed switching frequency with capability of external

synchronization

• Output overcurrent protection (non-latching)

• Over temperature 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 0.246 in)

• Wide operating temperature range [-40°C to 105°C

(Ruggedized: -D), 85°C(Regular)]

†

• UL* 60950-1Recognized, CSA

Certified, and VDE

‡

0805:2001-12 (EN60950-1) Licensed

C22.2 No. 60950-1-03

• ISO** 9001 and ISO 14001 certified manufacturing

facilities

protocol

Description

The 3A Digital PicoDLynxTM 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

0.45Vdc to 5.5Vdc, programmable via an external resistor and PMBus control. Features include a digital interface using the PMBus
protocol, remote On/Off, adjustable output voltage, over current and over temperature protection. The PMBus interface supports a
range of commands to both control and monitor the module. The module also includes the Tunable Loop
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 trademark of Underwriters Laboratori es, 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

#

The PMBus name and logo are registered trademarks of the System Management Interface Forum (SMIF)

April 29, 2013 ©2013 General Electric Company. All rights reserved.

= 3Vdc-14.4Vdc) and provide a precisely regulated output voltage from

IN

TM

feature that allows the

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc 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

SEQ, SYNC, VS+ All 7 V

CLK, DATA, SMBALERT All 3.6 V

Operating Ambient Temperature All T

(see Thermal Considerations section)

Storage Temperature All T

IN

A

stg

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 3

Maximum Input Current All I

(VIN=3V to 14V, IO=I

Input No Load Current

= 12Vdc, IO = 0, module enabled)

(V

IN

Input Stand-by Current

= 12Vdc, module disabled)

(V

IN

Inrush Transient All I2t 1 A2s

Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1H source impedance; V
Test Configurations)

Input Ripple Rejection (120Hz) All -57 dB

)

O, max

V

= 0.6

O,set

Vdc

V

=

O,set

5Vdc

All I

=0 to 14V, IO= I

IN

Omax

; See

All 100 mAp-p

IN,max

I

IN,No load

I

IN,No load

IN,stand-by

17.5 mA

43 mA

6.4 mA

-0.3 15 V

-40 85 °C

-55 125 °C

⎯

2.8 Adc

14.4 Vdc

April 29, 2013 ©2013 General Electric Company. All rights reserved. Page 2

p

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point (with 0.1% tolerance for external
resistor used to set output voltage)

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

Adjustment Range (selected by an external resistor)
(Some output voltages may not be possible depending on the
input voltage – see Feature Descriptions Section)

PMBus Adjustable Output Voltage Range All VO,adj -25 0 +25 %V

PMBus Output Voltage Adjustment Step Size All 0.4 %V

Remote Sense Range All 0.5 Vdc

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

Output Ripple and Noise on nominal output

(VIN=V
ceramic ca

IN, nom

and IO=I

acitors)

O, min

to I

Co = 0.1F // 22 F

O, max

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

RMS (5Hz to 20MHz bandwidth) All 20 38 mV

External Capacitance1

Without the Tunable Loop

TM

ESR  1 m All C

With the Tunable Loop

TM

ESR  0.15 m All C

ESR  10 m All C

Output Current (in either sink or source mode) All I

Output Current Limit Inception (Hiccup Mode)
(current limit does not operate in sink mode)

Output Short-Circuit Current All I

(VO250mV) ( Hiccup Mode )

Efficiency V

VIN= 12Vdc, TA=25°C V

IO=I

O, max , VO

= V

V

O,set

V

V

V

Switching Frequency All f

1

External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best

transient response. See the Tunable Loop

TM

section for details.

All V

All V

All V

O, set

O, set

O

-1.0 +1.0 % V

-3.0

⎯

+3.0 % V

0.6 5.5 Vdc

+0.4 % V

⎯

⎯

⎯

⎯

⎯

10 mV

5 mV

10 mV

0.4 % V

50 100 mV

⎯

O, max

10

⎯

22 F

O, max

O, max

o

All I

= 0.6Vdc  72.4 %

O,set

= 1.2Vdc 

O, set

= 1.8Vdc 

O,set

= 2.5Vdc 

O,set

= 3.3Vdc 

O,set

= 5.0Vdc 

O,set

O, lim

O, s/c

sw

22

22

0 3 Adc

270 % I

268 mArms

⎯

⎯

⎯

83.2

87.5

90.1

91.9

94.0

600

1000 F

3000 F

%

%

%

%

%

⎯

o,max

kHz

O, set

O, set

O,set

O,set

O, set

O, set

pk-pk

rms

April 29, 2013 ©2012 General Electric Company. All rights reserved. Page 3

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Frequency Synchronization All

Synchronization Frequency Range All 510 720 kHz

High-Level Input Voltage All V

Low-Level Input Voltage All V

Input Current, SYNC All I

Minimum Pulse Width, SYNC All t

Maximum SYNC rise time All t

IH

IL

SYNC

SYNC

SYNC_SH

General Specifications

Parameter Device Min Typ Max Unit

Calculated MTBF (IO=0.8I

, TA=40°C) Telecordia Issue 2 Method 1

O, max

Case 3

Weight

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 Unit

On/Off Signal Interface

(VIN=V

Signal referenced to GND)

Device code 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 2.0 — V

Logic Low (Module ON)

Input low Current All IIL — — 10 A

Input Low Voltage All VIL -0.2 — 0.6 Vdc

IN, min

to V

; open collector or equivalent,

IN, max

2.0 V

0.4 V

100 nA

100 ns

100 ns

All 19,508,839 Hours

⎯

0.96(0.034)

⎯

⎯

2

⎯

1 mA

V

IN,max

⎯ ⎯

-0.2

⎯

1 mA

0.6 V

g (oz.)

V

Vdc

IN, max

April 29, 2013 ©2013 General Electric Company. All rights reserved. Page 4

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Feature Specifications (cont.)

Parameter Device Symbol Min Typ Max Units

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 Vo, set)

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 Vo = 10% of Vo, set)

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

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

Over Temperature Protection
(See Thermal Considerations section)

PMBus Over Temperature Warning Threshold* All T

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

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

(V

Input Undervoltage Lockout

IN

IN, min

= V

IN, nom

IN, min

to V

, IO=I

to V

IN, max

to within ±1% of steady state)

O, max , VO

= V

until Vo =

IN

IN, min

= I

to I

IN, max,IO

; I

O, min

to I

O, min

O, max

)

O, max

VSEQ < Vo)

Turn-on Threshold All

Turn-off Threshold All

All Tdelay — 0.4 — msec

All Tdelay — 0.4 — msec

All Trise

3.0 % V

All T

ref

WARN

— 2.4 — msec

150 °C

130 °C

2.71 Vdc

2.41 Vdc

O, set

Hysteresis All

PMBus Adjustable Input Under Voltage Lockout Thresholds All

Resolution of Adjustable Input Under Voltage Threshold All

PGOOD (Power Good)

Signal Interface Open Drain, V

supply

≤ 5VDC

Overvoltage threshold for PGOOD ON All

Overvoltage threshold for PGOOD OFF All

Undervoltage threshold for PGOOD ON All

Undervoltage threshold for PGOOD OFF All

Pulldown resistance of PGOOD pin All

Sink current capability into PGOOD pin All

0.3 Vdc

2.5 14 Vdc

500 mV

108 %V

110 %V

92 %V

90 %V

50

5 mA

* Over temperature Warning – Warning may not activate before alarm and unit may shutdown before warning

Ω

O, set

O, set

O, set

O, set

April 29, 2013 ©2012 General Electric Company. All rights reserved. Page 5

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Digital Interface Specifications

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

Parameter Conditions Symbol Min Typ Max Unit

PMBus Signal Interface Characteristics

Input High Voltage (CLK, DATA) VIH 2.1 3.6 V

Input Low Voltage (CLK, DATA) VIL 0.8 V

Input high level current (CLK, DATA) IIH -10 10 A

Input low level current (CLK, DATA) IIL -10 10 A

Output Low Voltage (CLK, DATA, SMBALERT#) I

Output high level open drain leakage current (DATA,
SMBALERT#)

Pin capacitance CO 0.7 pF

PMBus Operating frequency range Slave Mode FPMB 10 400 kHz

Data hold time

Data setup time

Measurement System Characteristics

Read delay time

Output current measurement range

Output current measurement resolution

Output current measurement gain accuracy accuracy
at 25°C (with I

Output current measurement offset

V

measurement range

OUT

V

measurement resolution

OUT

V

measurement accuracy

OUT

V

measurement offset

OUT

VIN measurement range
VIN measurement resolution

VIN measurement accuracy

VIN measurement offset

OUT, CORR

)

=2mA VOL 0.4 V

OUT

V

=3.6V I

OUT

Receive Mode

Transmit Mode

tSU:DAT

OH

tHD:DAT

tDLY 153 192 231 s

I

RNG

I

RES

I

ACC

I

OFST

V

OUT(rng)

V

OUT(res)

V

OUT(gain)

V

OUT(ofst)

V

IN(rng)

V

IN(res)

V

IN(gain)

V

IN(ofst)

0 10 A

0

300

250 ns

0 18 A

62.5 mA

±5 %

0.1 A

0 5.5 V

15.625 mV

-15 15 %

-3 3 %

3 14.4 V

32.5 mV

-15 15 %

-5.5 1.4 LSB

ns

April 29, 2013 ©2013 General Electric Company. All rights reserved. Page 6

/

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 3A Digital PicoDLynxTM at 0.6Vo and 25oC.

90

85

80

EFFICIENCY, η (%)

75

70

65

60

55

50

45

40

Vin=3.3V

Vin=12V

00.511.522.53

OUTPUT CURRENT, I

Vin=14V

(A) AMBIENT TEMPERATURE, TA OC

O

Figure 1. Converter Efficiency versus Output Current.

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

3.5

3.0

Standard Part

2.5

(85°C)

Ruggedized ( D)

Part (105° C)

2.0

OUTPUT CURRENT, Io (A)

1.5
55 65 75 85 95 105

0.5m/s

(100LFM)

NC

(V) (10mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 3. Typical output ripple and noise (C

IN = 12V, Io = Io,max, ).

V

(V) (5V/div)

OFF VOLTAGE

ON/OFF

(V) (200mV/div) V

O

=10F ceramic,

O

(V) (10mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 4. Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 1x47uF+2x330uF, CTune=27nF,
RTune=180

(V) (5V/div)

IN

(V) (200mV/div) V

O

V

OUTPUT VOLTAGE ON

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

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGE INPUT VOLTAGE

V

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

o,max).

I

IN = 12V, Io =

April 29, 2013 ©2012 General Electric Company. All rights reserved. Page 7

OUTPUT

VOLTAGE

ON/OFF

VOLTAGE

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 3A Digital PicoDLynxTM at 1.2Vo and 25oC.

95

90

85

80

75

70

65

60

EFFICIENCY, η (%)

55

50

Vin=3.3V

Vin=14V

Vin=12V

00.511.522.53

OUTPUT CURRENT, I

(A) AMBIENT TEMPERATURE, TA OC

O

Figure 7. Converter Efficiency versus Output Current.

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

3.5

3.0

2.5

2.0

OUTPUT CURRENT, Io (A)

Standard

Part ( 85 C)

Ruggedized (D)

Part ( 105°C)

1.5

55 65 75 85 95 105

0.5m/s

(100LFM)

NC

(V) (10mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 9. Typical output ripple and noise (C

IN = 12V, Io = Io,max, ).

V

(V) (5V/div)

ON/OFF

(V) (500mV/div) V

O

=10F ceramic,

O

(V) (10mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 10. Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 1x47uF+1x330uF, CTune=10nF
& RTune=267

(V) (5V/div)

IN

(V) (500mV/div) V

O

V

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

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGE INPUT VOLTAGE

V

Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Io =

o,max).

I

April 29, 2013 ©2013 General Electric Company. All rights reserved. Page 8

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 3A Digital PicoDLynxTM at 1.8Vo and 25oC.

95

90

85

80

75

70

EFFICIENCY, η (%)

65

60

Vin=3.3V

Vin=14V

Vin=12V

00.511.522.53

OUTPUT CURRENT, I

(A) AMBIENT TEMPERATURE, TA OC

O

Figure 13. Converter Efficiency versus Output Current.

3.5

3.0

2.5

Standard Part

(85°C)

2.0

OUTPUT CURRENT, Io (A)

Ruggedized (D)

Part ( 105°C)

1.5
55 65 75 85 95 105

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

0.5m/s

(100LFM)

NC

(V) (10mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 15. Typical output ripple and noise (C

IN = 12V, Io = Io,max, ).

V

(V) (5V/div)

ON/OFF

(V) (500mV/div) V

O

=10F ceramic,

O

(V) (10mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 16. Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 1x47uF +1x330uF, CTune=10nF
& RTune=267

(V) (5V/div)

IN

(V) (500mV/div) V

O

OUTPUT VOLTAGE ON/OFF VOLTAGE

V

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

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGE INPUT VOLTAGE

V

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

o,max).

I

IN = 12V, Io =

April 29, 2013 ©2012 General Electric Company. All rights reserved. Page 9

OUTPUT

VOLTAGE

ON/OFF

VOLTAGE

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 3A Digital PicoDLynxTM at 2.5Vo and 25oC.

100

95

90

85

80

75

70

EFFICIENCY, η (%)

65

60

Vin=4.5V

Vin=14V

Vin=12V

00.511.522.53

OUTPUT CURRENT, I

(A) AMBIENT TEMPERATURE, TA OC

O

Figure 19. Converter Efficiency versus Output Current.

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

3.5

3.0

2.5

2.0

OUTPUT CURRENT, Io (A)

Standard

Part (85° C)

Ruggedized (D)

Part (105°C)

1.5
55 65 75 85 95 105

0.5m/s

(100LFM)

NC

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 21. Typical output ripple and noise (C

IN = 12V, Io = Io,max, ).

V

(V) (5V/div)

ON/OFF

(V) (1V/div) V

O

=10F ceramic,

O

(V) (20mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 22. Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 2x47uF, CTune=2700pF &
RTune=267

(V) (5V/div)

IN

(V) (1V/div) V

O

V

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

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGE INPUT VOLTAGE

V

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

o,max).

I

IN = 12V, Io =

April 29, 2013 ©2013 General Electric Company. All rights reserved. Page 10

GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 3A Digital PicoDLynxTM at 3.3Vo and 25oC.

100

95

90

85

80

75

70

EFFICIENCY, η (%)

65

60

Vin=4.5V

Vin=14V

Vin=12V

00.511.522.53

OUTPUT CURRENT, I

(A) AMBIENT TEMPERATURE, TA OC

O

Figure 25. Converter Efficiency versus Output Current.

3.5

3.0

2.5

Standard

Part (85° C)

2.0

OUTPUT CURRENT, Io (A)

Ruggedized (D)

Part (105°C)

1.5
55 65 75 85 95 105

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

0.5m/s

(100LFM)

NC

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 27. Typical output ripple and noise (C

IN = 12V, Io = Io,max, ).

V

(V) (5V/div)

ON/OFF

(V) (1V/div) V

O

=10F ceramic,

O

(V) (20mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 28 Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 2x47uF, CTune=2200pF &
RTune=267

(V) (5V/div)

IN

(V) (1V/div) V

O

OUTPUT VOLTAGE ON/OFF VOLTAGE

V

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

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGE INPUT VOLTAGE

V

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

o,max).

I

IN = 12V, Io =

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GE

Data Sheet

3A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 3A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 3A Digital PicoDLynxTM at 5Vo and 25oC.

100

95

90

85

80

75

70

EFFICIENCY, η (%)

65

60

00.511.522.53

Vin=12V

Vin=7V

OUTPUT CURRENT, I

Vin=14V

(A) AMBIENT TEMPERATURE, TA OC

O

Figure 31. Converter Efficiency versus Output Current.

3.5

3.0

2.5

Standard

Part (85° C)

2.0

OUTPUT CURRENT, Io (A)

Ruggedized (D)

Part ( 105°C)

1.5
45 55 65 75 85 95 105

Figure 32. Derating Output Current versus Ambient
Temperature and Airflow.

1m/s

(200LFM)

NC

0.5m/s

(100LFM)

(V) (50mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 33. Typical output ripple and noise (CO=10μF
ceramic, V

IN = 12V, Io = Io,max, ).

(V) (5V/div)

ON/OFF

(V) (2V/div) V

O

(V) (50mV/div)

O

(A) (1Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 34. Transient Response to Dynamic Load
Change from 50% to 100% at 12Vin, Cout= 1x47uF,
CTune=820pF & RTune=267

(V) (5V/div)

IN

(V) (2V/div) V

O

OUTPUT VOLTAGE ON/OFF VOLTAGE

V

Figure 35. Typical Start-up Using On/Off Voltage (Io =
I

o,max).

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGE INPUT VOLTAGE

V

Figure 36. Typical Start-up Using Input Voltage (V
12V, I

o = Io,max).

IN =

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