GE Industrial Solutions Austin Microlynx SIP User Manual

Data Sheet July 2, 2010

Austin Microlynx

3Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A Output Current

TM

SIP Non-isolated Power Modules:

RoHS Compliant

Applications

 Distributed power architectures

 Intermediate bus voltage applications

 Telecommunications equipment

 Servers and storage applications

 Networking equipment

 Enterprise Networks

 Latest generation IC’s (DSP, FPGA, ASIC) and

Microprocessor powered applications

Features

 Compliant to RoHS EU Directive 2002/95/EC (-Z

versions)

 Compliant to ROHS EU Directive 2002/95/EC with

lead solder exemption (non-Z versions)

 Delivers up to 5A output current

 High efficiency – 94% at 3.3V full load (V

 Small size and low profile:

22.9 mm x 10.2 mm x 6.66 mm

(0.9 in x 0.4 in x 0.262 in)

 Low output ripple and noise

 High Reliability:

Calculated MTBF = 19M hours at 25

 Output voltage programmable from 0.75 Vdc to

3.63Vdc via external resistor

 Line Regulation: 0.3% (typical)

 Load Regulation: 0.4% (typical)

 Temperature Regulation: 0.4 % (typical)

 Remote On/Off

 Output overcurrent protection (non-latching)

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

†

 UL* 60950-1Recognized, CSA

03 Certified, and VDE

‡

0805:2001-12 (EN60950-1)

C22.2 No. 60950-1-

Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

= 5.0V)

IN

o

C Full-load

Description

Austin MicroLynxTM SIP (single in-line package) power modules are non-isolated dc-dc converters that can deliver up to 5A of output current with full load efficiency of 94% at 3.63V output. These modules provide precisely regulated output voltage programmable via external resistor from 0.75Vdc to 3.63Vdc over a wide range of input voltage (V space-efficient solutions. Standard features include remote On/Off, programmable output voltage and overcurrent protection.

*

UL is a registered trademark of Underwriters Laborat ories, Inc.

†

CSA is a registered trademark of Canadian Standards A ssociation.

‡

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

** ISO is a registered trademark of the Internation al Organization of Standards

= 3.0 – 5.5V). Their open-frame construction and small footprint enable designers to develop cost- and

IN

Document No: DS03-083 ver. 1.35

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

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

Operating Ambient Temperature All T

IN

A

-0.3 5.8 Vdc

-40 85 °C

(see Thermal Considerations section)

Storage Temperature All T

stg

-55 125 °C

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 3.0 - 5.5 Vdc

Maximum Input Current All I

(VIN= V

Input No Load Current V

IN, min

to V

IN, max

, IO=I

)

O, max

= 0.75 Vdc I

O,set

IN,max

IN,No load

5.0 Adc

20 mA

(VIN = V

Input Stand-by Current All I

(VIN = V

, Io = 0, module enabled) V

IN, nom

, module disabled)

IN, nom

= 3.3Vdc I

O,set

IN,No load

IN,stand-by

45 mA

0.6 mA

Inrush Transient All I2t 0.04 A2s

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

= I

IN, max, IO

; See Test configuration section)

Omax

IN, min

to

All 35 mAp-p

Input Ripple Rejection (120Hz) All 30 dB

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 being part of a complex 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 fastacting fuse with a maximum rating of 6 A (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.

LINEAGE POWER 2

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point All V

(VIN=

IN, min

, IO=I

, TA=25°C)

O, max

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

O, set

O

Output Regulation

Line (VIN=V

Load (IO=I

Temperature (T

IN, min

O, min

to V

to I

ref=TA, min

) All

IN, max

) All

O, max

to T

) All ⎯ 0.4

A, max

Output Ripple and Noise on nominal output

(VIN=V

IN, nom

and IO=I

O, min

to I

O, max

Cout = 1μF ceramic//10μFtantalum capacitors)

RMS (5Hz to 20MHz bandwidth) All

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

External Capacitance

ESR ≥ 1 mΩ All C

ESR ≥ 10 mΩ All C

Output Current All I

Output Current Limit Inception (Hiccup Mode ) All I

(VO= 90% of V

)

O, set

Output Short-Circuit Current All I

(VO≤250mV) ( Hiccup Mode )

Efficiency V

VIN= V

IO=I

, TA=25°C V

IN, nom

= V

O, max , VO

V

O,set

V

= 0.75Vdc η 79.0 %

O,set

= 1.2Vdc η 85.0 %

O, set

= 1.5Vdc η 87.0 %

O,set

= 1.8Vdc η 88.5 %

O,set

= 2.5Vdc η 92.0 %

O,set

= 3.3Vdc η 94.0 %

O,set

Switching Frequency All f

O, max

o

O, lim

O, s/c

sw

Dynamic Load Response

(dIo/dt=2.5A/μs; VIN = V

IN, nom

; TA=25°C)

Load Change from Io= 50% to 100% of Io,max; 1μF ceramic// 10 μF tantalum

All V

pk

Peak Deviation

Settling Time (Vo<10% peak deviation)

(dIo/dt=2.5A/μs; VIN = V

IN, nom

; TA=25°C)

Load Change from Io= 100% to 50%of Io,max: 1μF ceramic// 10 μF tantalum

All t

All V

s

pk

Peak Deviation

Settling Time (Vo<10% peak deviation)

All t

s

-2.0 V

-3%

+2.0 % V

O, set

⎯

+3.% % V

0.7525 3.63 Vdc

⎯

0.3

0.4

⎯

10 15 mV

40 50 mV

% V

⎯ ⎯

1000 μF

3000 μF

0 5 Adc

⎯

220

2

⎯

300

130

25

130

25

⎯

⎯ μs

⎯

⎯ μs

pk-pk

% I

Adc

kHz

mV

O, set

rms

o

LINEAGE POWER 3

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Dynamic Load Response

(dIo/dt=2.5A/μs; V VIN = V

Load Change from Io= 50% to 100% of Io,max; Co = 2x150 μF polymer capacitors

Peak Deviation

Settling Time (Vo<10% peak deviation)

(dIo/dt=2.5A/μs; VIN = V

Load Change from Io= 100% to 50%of Io,max: Co = 2x150 μF polymer capacitors

Peak Deviation

Settling Time (Vo<10% peak deviation)

IN, nom

; TA=25°C)

All V

All t

All V

All t

pk

s

pk

s

⎯

50

⎯

⎯ μs

⎯

⎯ μs

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO=I

Weight

, TA=25°C) 19,000,000 Hours

O, max

⎯

2.8 (0.1)

⎯

g (oz.)

mV

LINEAGE POWER 4

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

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

Remote On/Off Signal interface

(VIN=V

Compatible, Von/off signal referenced to GND

See feature description section)

Logic Low (On/Off Voltage pin open - Module ON)

Von/Off All VIL ― ― 0.4 V

Ion/Off All IIL ― ― 10 μA

Logic High (Von/Off > 2.5V – Module Off)

Von/Off All VIH ― ― V

Ion/off All IIH ― ― 1 mA

Turn-On Delay and Rise Times

(IO=I

Case 1: On/Off input is set to Logic Low (Module ON) and then input power is applied (delay from instant at which V

Case 2: Input power is applied for at least one second and then the On/Off input is set to logic Low (delay from instant at which Von/Off=0.3V until Vo=10% of Vo, set)

Output voltage Rise time (time for Vo to rise from 10% of V

Output voltage overshoot – Startup ―

IO= I

Overtemperature Protection

(See Thermal Consideration section)

Input Undervoltage Lockout

IN, min

O, max , VIN

to V

; Open collector pnp or equivalent

IN, max

= V

= 25 oC, )

IN, nom, TA

V

IN, max

All Tdelay ― 3.9 ― msec

=V

IN

until Vo=10% of Vo,set)

IN, min

All Tdelay ― 3.9 ― msec

All Trise

o,set to 90% of Vo, set)

; VIN = 3.0 to 5.5Vdc, TA = 25 oC

O, max

All T

Turn-on Threshold All

Turn-off Threshold All

ref

― 4.2 8.5 msec

1

⎯

150

⎯

2.2 V

2.0 V

% V

°C

O, set

LINEAGE POWER 5

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Characteristic Curves

The following figures provide typical characteristics for the Austin MicroLynxTM SIP modules at 25ºC.

88

95

85

82

79

76

73

EFFICIENCY, η (%)

70

0 123 45

Vin = 3.0V

Vin = 5.0V

Vin = 5.5V

OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)

Figure 1. Converter Efficiency versus Output Current (Vout = 0.75Vdc).

95

90

85

80

75

EFFICIENCY, η (%)

70

Vin = 3.0V

Vin = 5.0V

Vin = 5.5V

0 12345

OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)

Figure 2. Converter Efficiency versus Output Current (Vout = 1.2Vdc).

90

85

80

75

EFFICIENCY, η (%)

70

012 345

Vin = 3.0V

Vin = 5.0V

Vin = 5.5V

Figure 4. Converter Efficiency versus Output Current (Vout = 1.8Vdc).

10 0

95

90

85

80

75

EFFICIENCY, η (%)

70

012345

Vin = 3.0V

Vin = 5.0V

Vin = 5.5V

Figure 5. Converter Efficiency versus Output Current (Vout = 2.5Vdc).

95

90

85

Vin = 3.0V

80

Vin = 5.0V

75

EFFICIENCY, η (%)

70

0123 45

Vin = 5.5V

10 0

95

90

85

80

75

EFFICIENCY, η (%)

70

0 12345

Vin = 4.5V

Vin = 5.0V

Vin = 5.5V

OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)

Figure 3. Converter Efficiency versus Output Current (Vout = 1.5Vdc).

Figure 6. Converter Efficiency versus Output Current (Vout = 3.3Vdc).

LINEAGE POWER 6

Data Sheet

(V)

July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the MicroLynxTM SIP modules at 25ºC.

6

5

(A)

4

IN

3

2

1

INPUT CURRENT, I

0

0.5 1.5 2.5 3 .5 4.5 5.5

INPUT VOLTAGE, V

Figure 7. Input voltage vs. Input Current

(Vout = 2.5Vdc).

Io =0A

Io =2.5A

Io =5A

IN

(V) (100mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

TIME, t (5 μs/div)

Figure 10. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3Vdc).

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (2μs/div) TIME, t (5 μs/div)

Figure 8. Typical Output Ripple and Noise

(Vin = 5V dc, Vo = 0.75 Vdc, Io=5A).

(V) (20mV/div)

O

OUTPUT VOLTAGE

V

TIME, t (2μs/div) TIME, t (10μs/div)

Figure 9. Typical Output Ripple and Noise

(Vin = 5V dc, Vo = 3.3 Vdc, Io=5A).

(V) (100mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

Figure 11. Transient Response to Dynamic Load Change from 100% to 50% of full load (Vo = 3.3 Vdc).

(V) (50mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

Figure 12. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3 Vdc, Cext = 2x150 μF Polymer Capacitors).

LINEAGE POWER 7

Data Sheet

μ

July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the Austin MicroLynxTM SIP modules at 25ºC.

(V) (2V/div)

IN

(V) (50mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT OUTPUTVOLTAGE

I

TIME, t (10μs/div)

Figure 13. Transient Response to Dynamic Load Change from 100% of 50% full load (Vo = 3.3 Vdc, Cext = 2x150

OUTPUT VOLTAGE On/Off VOLTAGE

F Polymer Capacitors).

(V) (52V/div)

On/off

V) (1V/div) V

O

V

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

Figure 14. Typical Start-Up Using Remote On/Off

(Vin = 5Vdc, Vo = 3.3Vdc, Io = 5.0A).

(V) (2V/div)

On/off

(V) (1V/div) V

o

OUTPUT VOLTAGE, INPUT VOLTAGE

V

TIME, t (2 ms/div)

Figure 16. Typical Start-Up with application of Vin with (Vin = 5.0Vdc, Vo = 3.3Vdc, Io = 5A).

(V) (2V/div)

On/off

V) (1V/div) V

O

V

OUTPUT VOLTAGE On/Off VOLTAGE

Figure 17 Typical Start-Up using Remote On/off with Prebias (Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 1A, Vbias =1.0 Vdc).

(A) (5A/div)

O

V) (1V/div) V

O

V

OUTPUT VOLTAGE On/Off VOLTAGE

F

igure 15. Typical Start-Up Using Remote On/Off with

Low-ESR external capacitors (7x150uF Polymer) (Vin

TIME, t (2 ms/div) TIME, t (20ms/div)

OUTPUT CURRENT,

I

Figure 18. Output short circuit Current (Vin = 5Vdc, Vo = 0.75Vdc).

= 5Vdc, Vo = 3.3Vdc, Io = 5.0A, Co = 1050μF).

LINEAGE POWER 8

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide thermal derating curves for the Austin MicroLynxTM SIP modules.

6

5

4

3

2

1

0

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

NC

0. 5m/ s ( 100 LFM )

1. 0 m/ s ( 2 0 0 LF M )

AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC

Figure 19. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=3.3Vdc).

OUTPUT CURRENT, Io (A)

6

5

4

3

2

1

0

20 30 40 50 60 70 80 90

NC

0 .5m/ s (100 LFM )

1.0m/s (200 LFM )

AMBIENT TEMPERATURE, TA OC

Figure 20. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=0.75 Vdc).

6

5

4

3

2

1

0

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

NC

0. 5m/s ( 10 0 LF M)

1.0m/s (200 LFM)

Figure 22. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 3.3Vdc, Vo=0.75 Vdc).

5

4

3

2

1

0

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90

NC

0.5m/ s (100 LFM )

1.0m/s (200 LFM)

AMBIENT TEMPERATURE, TA OC

Figure 21. Derating Output Current versus Local Ambient Temperature and Airflow

(Vin = 3.3Vdc,

Vo=2.5 Vdc).

LINEAGE POWER 9

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Test Configurations

TO OSCILLOSCOPE

L

TEST

1μH

CS 1000μF

BATTERY

NOTE: Measure input reflected ripple current with a simulated

Electrolytic

E.S.R.<0.1Ω

@ 20°C 100kHz

source induc tance (L possible battery impedance. Measure current as shown above.

) of 1μH. Capacit or CS offsets

TEST

Figure 23. Input Reflected Ripple Current Test Setup.

COPPER STRIP

V O (+)

1uF .

COM

NOTE: All voltage measurements to be taken at the module

terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance.

10uF

SCOPE

GROUND PLANE

Figure 24. Output Ripple and Noise Test Setup.

R

contact

distribution

R

contact

distribution

NOTE: All volt age meas urements to be taken at th e module

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

VIN(+)

V

IN

COM

Figure 25. Output Voltage and Efficiency Test Setup.

V

. I

O

Efficiency

=

η

VIN. I

O

IN

V

COM

2x100μF Tantalum

O

CURRENT PROBE

CIN

RESISTIVE LOAD

R

V

O

R

x 100 %

VIN(+)

COM

contactRdistribution

R

contactRdistribution

LOAD

Design Considerations

Input Filtering

The Austin MicroLynxTM SIP module should be connected to a low-impedance 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 polymer and ceramic capacitors are recommended at the input of the module. Figure 26 shows the input ripple voltage (mVpp) for various outputs with 1x150 µF polymer capacitors (Panasonic p/n: EEFUE0J151R, Sanyo p/n: 6TPE150M) in parallel with 1 x 47 µF ceramic capacitor (Panasonic p/n: ECJ-5YB0J476M, Taiyo- Yuden p/n: CEJMK432BJ476MMT) at full load. Figure 27 shows the input ripple with 2x150 µF polymer capacitors in parallel with 2 x 47 µF ceramic capacitor at full load.

12 0

10 0

80

60

40

Vin = 3.3V

20

V in = 5.0V

0

Input Ripple Voltage (mVp-p)

Output Voltage (Vdc)

Figure 26. Input ripple voltage for various output with 1x150 µF polymer and 1x47 µF ceramic capacitors at the input (full load)

Input Ripple Voltage (mVp-p)

Output Voltage (Vdc)

Figure 27. Input ripple voltage for various output with 2x150 µF polymer and 2x47 µF ceramic capacitors at the input (full load)

01234

12 0

10 0

80

60

40

Vin = 3.3V

20

V in = 5.0V

0

01234

LINEAGE POWER 10

Data Sheet July 2, 2010

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

Austin MicroLynx

Design Considerations (continued)

Output Filtering

The Austin MicroLynxTM SIP module is designed for low output ripple voltage and will meet the maximum output ripple specification with 1 µF ceramic and 10 µF polymer 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 polymer and ceramic capacitors are recommended to improve the dynamic response of the module. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table.

TM

SIP Non-isolated Power Modules:

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 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 fastacting fuse with a maximum rating of 6A in the positive

input lead

.

LINEAGE POWER 11

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Feature Description

Remote On/Off

The Austin MicroLynxTM SIP power modules feature an On/Off pin for remote On/Off operation of the module. If not using the remote On/Off pin, leave the pin open (module will be On). The On/Off pin signal (Von/Off) is referenced to ground. To switch module on and off using remote On/Off, connect an open collector pnp transistor between the On/Off pin and the V

When the transistor Q1 is in the OFF state, the power module is ON (Logic Low on the On/Off pin of the module) and the maximum Von/off of the module is 0.4 V. The maximum allowable leakage current of the transistor when Von/off = 0.4V and V

IN

logic-high when the transistor is in the active state, the power module is OFF. During this state VOn/Off =10 14V and the maximum IOn/Off = 1mA.

VIN(+)

Lynx-series Module

I

On/Off

GND

20k

Figure 28. Remote On/Off Implementation

Remote On/Off can also be implemented using opencollector logic devices with an external pull-up resistor. Figure 28a shows the circuit configuration using this approach. Pull-up resistor, R should be 5k (+/-5%) for proper operation of the module over the entire temperature range.

VIN+

R

pull-up

I

ON/OFF

GND

ON/OFF

V

ON/OFF

Q1

+

_

Figure 28a. Remote On/Off Implementation using logic-level devices and an external pull-up resistor

pin (See Figure 28).

IN

= V

is 10μA. During a

IN,max

Enable

Css

pull-up, for the configuration

MODULE

PWM Enable

R1

Q2 CSS

R2

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. The typical average output current during hiccup is 2A.

Input Undervoltage Lockout

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

Overtemperature Protection

To provide over temperature protection in a fault condition, the unit relies upon the thermal protection feature of the controller IC. The unit will shutdown if the thermal reference point T

o

150

C (typical), but the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restarts after it cools down.

, (see Figure 31) exceeds

ref2

LINEAGE POWER 12

Data Sheet July 2, 2010

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

Austin MicroLynx

Feature Descriptions (continued)

Output Voltage Programming

The output voltage of the Austin MicroLynx programmed to any voltage from 0.75Vdc to 3.63Vdc by connecting a resistor (shown as between Trim and GND pins of the module. Without an external resistor between Trim and GND pins, the output of the module will be 0.7525Vdc. To calculate the value of the trim resistor, the following equation:

Rtrim is the external resistor in Ω

Vo is the desired output voltage

For example, to program the output voltage of the Austin MicroLynx follows:

Figure 29. Circuit configuration to program output voltage using an external resistor

TM

V

(+)

IN

ON/OFF

Rtrim for a desired output voltage, use



= 5110

Rtrim

module to 1.8V, Rtrim is calculated as



Vo





Rtrim

= 5110

 

V

(+)

O

TRIM

GND

Rtrim in Figure 29)

21070

−

7525.0

21070

−

7525.08.1

Austin MicroLynx a voltage between TRIM and GND pins (Figure 30). The following equation can be used to determine the value of

Vtrim needed to obtain a desired output voltage Vo:

TM

can also be programmed by applying

{}()

For example, to program the output voltage of a MicroLynx follows:

TM

module to 3.3 Vdc, Vtrim is calculated as

{}

−

VVtrim 2670.0=

Ω= kRtrim 024.9

R

trim

7525.01698.07.0 −×−= VoVtrim

TM



Ω

 

 



can be

LOAD

)7525.03.31698.07.0( −×−=Vtrim

TM

SIP Non-isolated Power Modules:

GND

VO(+)

TRIM

+

-

V

rim

t

VIN(+)

ON/OFF

Figure 30. Circuit Configuration for programming Output voltage using external voltage source

Table 1 provides Rtrim values for most common

output voltages. Table 2 provides values of

external voltage source, Vtrim for various output

voltage.

Table 1

V

(V)

O, set

0.7525 Open

1.2 41.973

1.5 23.077

1.8 15.004

2.5 6.947

3.3 3.160

Rtrim (KΩ)

Table 2

V

(V)

O, set

0.7525 Open

Using 1% tolerance trim resistor, set point tolerance of ±2% is 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 external trim resistor needed for a specific output voltage.

1.2 0.6240

1.5 0.5731

1.8 0.5221

2.5 0.4033

3.3 0.2670

Vtrim (V)

LOAD

LINEAGE POWER 13

Data Sheet July 2, 2010

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

Austin MicroLynx

Feature Descriptions (continued)

The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using the trim feature, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (P I

).

o,max

Voltage Margining

Output voltage margining can be implemented in the Austin MicroLynx R

, from Trim pin to ground pin for margining-up

margin-up

the output voltage and by connecting a resistor, R

, from Trim pin to Output pin. Figure 31 shows the

down

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 R

margin-down

Please consult your local Lineage Power technical representative for additional details

TM

modules by connecting a resistor,

for a specific output voltage and % margin.

Vo

max

margin-up

= V

o,set

and

x

margin-

TM

SIP Non-isolated Power Modules:

Rmargin-down

Austin Lynx or Lynx II Series

Q2

Trim

Rmargin-up

Rtrim

Q1

GND

Figure 31. Circuit Configuration for margining Output voltage.

LINEAGE POWER

14

Data Sheet

A

W

July 2, 2010

Thermal Considerations

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

Austin MicroLynx

Power modules operate in a variety of thermal environments; however, sufficient cooling should 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

33. Note that the airflow is parallel to the long axis of the module as shown in figure 32. The derating data applies to airflow in either direction of the module’s long axis.

Air Flow

T

(inductor winding)

ref1

Top View

T

Bottom View

Figure 32. T

The thermal reference point, T specifications of thermal derating curves is shown in Figure 32. For reliable operation this temperature should not exceed 125 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 BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures.

Temperature measurement location.

ref

used in the

ref 1

o

C. The output power of the module

ref2

TM

SIP Non-isolated Power Modules:

25.4_

ind Tunnel

PWBs

x

7.24_

(0.285)

ir

(1.0)

Power Module

76.2_ (3.0)

Probe Location for measuring airflow and ambient temperature

flow

Figure 33. Thermal Test Set-up.

Heat Transfer via Convection

Increased airflow over the module enhances the heat transfer via convection. Thermal derating curves showing the maximum output current that can be delivered by various module versus local ambient temperature (T natural convection and up to 1m/s (200 ft./min) are shown in the Characteristics Curves section.

) for

A

Layout Considerations

Copper paths must not be routed beneath the power module. For additional layout guide-lines, refer to FLTR100V10 application note.

LINEAGE POWER 15

Data Sheet July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

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.

Through-Hole Lead-Free Soldering Information

The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant

components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3 preheat process should be such that the temperature of the power module board is kept below 210 solder, the recommended pot temperature is 260 the Pb-free solder pot is 270 compliant through-hole products can be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your Lineage Power technical representative for more details.

°C/s is suggested. The wave

°C. For Pb

°C, while

°C max. Not all RoHS-

LINEAGE POWER

16

Data Sheet July 2, 2010

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

Mechanical Outline

Dimensions are in millimeters and (inches).

Tolerances: x.x mm

x.xx mm

± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]

± 0.25 mm (x.xxx in ± 0.010 in.)

Austin MicroLynx

TM

SIP Non-isolated Power Modules:

LINEAGE POWER 17

Document No: DS03-083 ver. 1.35

PDF name: microlynx_sip_3v-5.5v.pdf

Data Sheet July 2, 2010

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

Recommended Pad Layout

Dimensions are in millimeters and (inches).

Tolerances: x.x mm

x.xx mm

± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]

± 0.25 mm (x.xxx in ± 0.010 in.)

Austin MicroLynx

TM

SIP Non-isolated Power Modules:

LINEAGE POWER

18

Data Sheet

a

©

July 2, 2010

Austin MicroLynx

3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current

TM

SIP Non-isolated Power Modules:

Ordering Information

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

Table 3. Device Codes

Device Code

AXH005A0XZ 3.0 – 5.5Vdc 0.75 – 3.63Vdc 5 A 94.0% Negative SIP CC109104881

AXH005A0X 3.0 – 5.5Vdc 0.75 – 3.63Vdc 5 A 94.0% Negative SIP 108979675

Input

Voltage Range

Output

Voltage

Output

Current

Efficiency

3.3V@ 5A

On/Off

Logic

Connector

Type

Comcodes

-Z refers to RoHS compliant Versions

Asia-Pacific Headquarters

Tel: + 65 6593 721 1

World Wide Headquarters Lineage Power Corporation

601 Shil oh Road , Plano, TX 75074, USA +1-800-526-7819 (Outsi de U.S.A.: +1-972-244-9428)

www.lineagepower.com e-mail: techsupport1@lineagepower.com

Lineage Power reserves the right to make chang es to the p roduct(s) o r informati on contained h erei n without notice. No liability is assumed as a result o f their use or

pplication . No right s under any patent accompany the sale of a ny such pr oduct(s) or inf orma tion.

Lineage Power DC-D C products are protected under various pa tents. Infor mation on these pate nts i s available at www.lineage power.co m/patents.

2009 Lineage Power C orporation, (Plano, Te xas) Al l Inte rna tional R ights Reser ved.

Europe, Middle-East an d Africa Headquarters

Tel: + 49 898 780 672 80

India Headquarters Tel: + 91 80 28411 633

LINEAGE POWER 19

Document No: DS03-083 ver. 1.35

PDF name: microlynx_sip_3v-5.5v.pdf

GE Industrial Solutions Austin Microlynx SIP User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual