GE Industrial Solutions Austin Lynx 24V User Manual

Data Sheet September 10, 2013

18/20-30/32Vdc input; 3 to 6Vdc & 5 to 15Vdc Output; 30/50W

Austin LynxTM 24V:Non-isolated Power Modules:

RoHS Compliant

Applications

 Distributed power architectures

 Intermediate bus voltage applications

 Telecommunications equipment

 Wireless Base stations

 Industrial equipment

 LANs/WANs

 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 20002/95/EC with

lead solder exemption (non-Z versions)

 Wide input voltage range

AXB030: 18 to 30Vdc

AXB050: 20 to 32Vdc

 Output voltage programmable via external resistor

AXB030: 3Vdc to 6Vdc

AXB050: 5Vdc to 15Vdc

 High efficiency modules (VIN = 24Vdc)

AXB030: 91% at 3.3V full load

AXB050: 94% at 12Vdc full load

 Low output ripple and noise

 Monotonic start-up into pre-bias output

 Remote On/Off (Positive logic)

 Remote Sense

 Small size and low profile:

33.0 mm x 13.5 mm x 8.28 mm

(1.30 in x 0.53 in x 0.326 in)

 Constant switching frequency

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

 Over current and Over temperature protection (non-

latching)

 UL* 60950-1Recognized, CSA

03 Certified, and VDE Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

‡

†

0805:2001-12 (EN60950-1)

C22.2 No. 60950-1-

Description

The Austin LynxTM 24V series SMT power modules are non-isolated DC-DC converters in an industry standard package that can deliver up to 48W of output power with a full load efficiency of 94% at 12Vdc output voltage (V 24Vdc). These modules operate over a wide input voltage range (V regulated output voltage from 3 to 6Vdc (AXB030) and 5 to 15Vdc (AXB050), programmable via an external resistor. Standard features include remote On/Off, adjustable output voltage, remote sense, over current and over temperature protection.

* UL is a re gistered trademark of Underwriters Laboratories, Inc.

†

CSA is a reg istered trademark of Canadian Standards Associat ion.

‡

VDE is a t rademark of Verband Deutscher Elektrotechniker e.V.

** ISO is a registered trademark of the International Orga nization of Standards

IN = 18/20 – 30Vdc) and provide a precisely

Document No: DS05-032 ver.1.23

PDF name: lynx_24v_ds.pdf

IN =

Data Sheet

W

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: 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 36 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 AXB030 VIN 18.0 24.0 30.0 Vdc

AXB050 VIN 20.0 24.0 32.0 Vdc

Maximum Input Current All I

(VIN= 20V, VO= 12V, IO=I

Input No Load Current

(VIN = 24Vdc, Io = 0, module enabled)

Input Stand-by Current

(VIN = 24Vdc, module disabled)

)

O, max

o = 3.3Vdc

V

o = 12Vdc

V

o = 3.3Vdc

V

o = 12Vdc

V

IN,max

I

IN,No Load

I

IN,No Load

I

IN,stand-by

I

IN,stand-by

3.5 Adc

60 mAdc

110 mAdc

3 mA

Inrush Transient All

2

1

t

I

2

A

s

Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; V to 30V, I

= I

O

Omax

; See Figure 25)

=20V

IN

All 50 mAp-p

Input Ripple Rejection (120Hz) All 50 dB

CAUTION: These power modules can be used in a wide variety of applications ranging from simple standalone operation to an integrated part of sophisticated power architectures. To preserve maximum flexibility, no internal fuse has been provided. Also, extensive safety testing has shown that no external fuse is required to protect the unit. However, it is still recommended that some type of current-limiting power source be used to protect the module and evaluated in the end-use equipment.

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Data Sheet

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September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: Non-isolated Power Modules:

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point All V

(VIN=V

N, 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

Selected by an external resistor

AXB030 V

AXB050 V

O, set

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 ⎯ 0.5 1 % V

A, max

Output Ripple and Noise on nominal output

(VIN=V

IN, nom

and IO=I

O, min

to I

O, max

Cout =0.01μF ceramic//10μFtantalum capacitors)

Peak-to-Peak (5Hz to 20MHz bandwidth) AXB030

Peak-to-Peak (5Hz to 20MHz bandwidth) AXB050

External Capacitance

ESR ≥ 1 mΩ AXB030 C

ESR ≥ 10 mΩ AXB030 C

ESR ≥ 1 mΩ AXB050 C

ESR ≥ 10 mΩ AXB050 C

Output Current (VIN = V

)

IN, nom

Vo = 3.3Vdc AXB030 I

Vo = 5.0Vdc AXB050 I

Output Power (VIN = V

Vo =V

o,,min

to V

o,,max

) AXB030 Po 33 W

IN, nom

AXB050 Po 50 W

Output Short-Circuit Current AXB030 I

(VO≤250mV) ( Hiccup Mode ) AXB050 I

Efficiency V

VIN= V

IO=I

, TA=25°C V

IN, nom

= V

O, max , VO

V

O,set

V

= 3.3Vdc η 90 %

O,set

= 5.0Vdc η 93 %

O,set

= 12.0Vdc η 95 %

O,set

= 15.0Vdc η 96 %

O,set

Switching Frequency (Fixed) All f

O, max

o

O, s/c

sw

-2.0 V

-3%

+2.0 % V

O, set

⎯

+3% % V

3.0 6.0 Vdc

O

5.0 15.0 Vdc

O

⎯ ⎯

⎯

50 75 mV

100 200 mV

0.4 % V

0

⎯

1,000 μF

3,000 μF

1,000 μF

2,000 μF

0 10 Adc

0 8.0 Adc

⎯

15

20

300

⎯

O, set

pk-pk

Adc

kHz

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Data Sheet

W

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: Non-isolated Power Modules:

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Dynamic Load Response

(dIO/dt=5A/μs; VIN=VIN,

nom TA

=25°C)

Load Change from Io= 50% to 100% of IO,max; No external output capacitors

Peak Deviation (Vo = 3.3Vdc) AXB030 V

Peak Deviation (Vo = 12Vdc) AXB050 V

Settling Time (VO<10% peak deviation)

(dIO/dt=5A/μs; VIN=VIN,

; TA=25°C)

nom

Load Change from IO= 100% to 50%of IO, external output capacitors

max

: No

All t

Peak Deviation (Vo = 3.3Vdc) AXB030 V

Peak Deviation (Vo = 12Vdc) AXB050 V

Settling Time (VO<10% peak deviation)

(dIO/dt=5A/μs; VIN=VIN,

; TA=25°C)

nom

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

All t

Peak Deviation (Vo = 3.3Vdc) AXB030 V

Peak Deviation (Vo = 12Vdc) AXB050 V

Settling Time (VO<10% peak deviation)

(dIO/dt=5A/μs; VIN=VIN,

; TA=25°C)

nom

Load Change from Io= 100% to 50%of I 2x150 μF polymer capacitor

O,max

:

All t

Peak Deviation (Vo = 3.3Vdc) AXB030 V

Peak Deviation (Vo = 12Vdc) AXB050 V

Settling Time (VO<10% peak deviation)

All t

pk

s

pk

s

pk

s

pk

s

300 mV

220 mV

50

320 mV

220 mV

50

⎯

120 mV

130 mV

50

⎯

130 mV

⎯

50

⎯ μs

μs

General Specifications

Parameter Device Min Typ Max Unit

Calculated MTBF (VIN= V T

=40°C) Telecordia SR 332 Issue 1: Method 1,

A

case 3

Weight

LINEAGE POWER 4

IN, nom

, IO= 0.8I

O, max

,

AXB050 8,035,510 Hours

⎯

5.70 (0.20)

⎯

g (oz.)

Data Sheet

W

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: 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

On/Off Signal interface

(On/Off is open collector/drain logic input;

Signal referenced to GND - See feature description section)

Device is with suffix “4” – Positive Logic

Logic High (On/Off pin open – 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

Turn-On Delay and Rise Times

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

IN, nom

, IO=I

to within ±1% of steady state)

O, max , VO

All Tdelay 2 4 8 msec input power is applied (delay from instant at which V

Case 2: Input power is applied for at least one second

IN

= V

until Vo = 10% of Vo, set)

IN, min

All Tdelay 2 4 8 msec 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

o = 10% of Vo, set)

All Trise 10% of Vo, set to 90% of Vo, set)

Output voltage overshoot 3.0 % V

IO = I

O, max

; V

IN, min

– V

, TA = 25 oC

IN, max

Remote Sense Range ― ― 0.5 V Over temperature Protection

(See Thermal Consideration section)

Input Undervoltage Lockout

Turn-on Threshold AXB030

AXB050

Turn-off Threshold AXB030

AXB050

All T

ref

⎯

VIN−2.5V ⎯

10 µA

30 V

⎯ ⎯

-0.3

⎯

1 mA

1.2 V

2 5 9 msec

O, set

⎯

125 135 °C

17 Vdc

19 Vdc

15 Vdc

17 Vdc

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Data Sheet

0

)

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

Characteristic Curves

The following figures provide typical characteristics for the AXB030X module at 3.3V, 10A and 25oC.

95

90

85

80

75

EFFICIENCY, (η)

70

024681

Vin=30V

Vin=24V

Vin=20V

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

Figure 1. Converter Efficiency versus Output Current. Figure 4. Derating Output Current versus Local

12

10

8

6

4

2

0

0 20406080100

OUTPUT CURRENT, Io (A)

NC

0.5m/s (100LFM

Ambient Temperature and Airflow.

2m/s (400LFM

1m/s (200LFM)

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div))

Figure 2. Typical output ripple and noise (V I

o = Io,max).

O

(V) (200mV/div)

O

(A) (5A/div) V

OUTPUT CURRENT, OUTPUT VOLTAGEI

TIME, t (5μs /div)

IN = VIN,NOM,

Figure 3. Transient Response to Dynamic Load Change from 50% to 100% of full load with di/dt of 5A/μs.

(V) (1V/div)

O

(V) (20V/div) V

On/off

On/Off VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div)

Figure 5. Typical Start-up Using Remote On/Off (V 20V, I

o = Io,max).

(V) (1V/div)

O

(V) (20V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

TIME, t (1ms/div)

IN =

Figure 6. Typical Start-up Using Input Voltage (VIN = 20V, I

o = Io,max).

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Data Sheet

0

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the AXB050X module at 5V, 8A and 25oC.

100

95

90

85

80

75

EFFICIENCY, (η)

70

02468

Vin=30V

Vin=24V

Vin=20V

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

Figure 7. Converter Efficiency versus Output Current. Figure 10. Derating Output Current versus Local

9

8

7

6

5

4

3

2

1

0

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90 10

NC

100 lfm

(0.5m/s)

Ambient Temperature and Airflow (V

200 lfm

(1.0m/s)

= V

IN

IN,NOM

).

(V) (50mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div)

Figure 8. Typical output ripple and noise (VIN = VIN,NOM, I

o = Io,max).

O

(V) (200mV/div)

O

(A) (5A/div) V

OUTPUT CURRENT OUTPUT VOLTAGE I

TIME, t (5μs/div)

Figure 9. Transient Response to Dynamic Load change from 50% to 100% of full load with di/dt of 5A/μs.

(V) (2V/div)

O

(V) (10V/div) V

IN

On/Off VOLTAGE OUTPUT VOLTAGE

V

TIME, t (2.5ms/div)

Figure 11. Typical Start-up Using Remote On/Off (VIN = 24V, Io = Io,max).

(V) (2V/div)

O

(V) (10V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

TIME, t (2.5ms/div)

Figure 12. Typical Start-up Using Input Voltage (VIN = 20V, I

o = Io,max).

LINEAGE POWER 7

Data Sheet September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the AXB050X module at 12V, 4A and 25oC.

100

5

95

90

85

80

75

EFFICIENCY, η (%)

70

01234

Vin=30V

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

Vin=24V

Vin=20V

Figure 13. Converter Efficiency versus Output Current.

(V) (10mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div)

Figure 14. Typical output ripple and noise (VIN = V

IN,NOM, Io = Io,max).

4

3

2

1

0

OUTPUT CURRENT, Io (A)

20 30 40 50 60 70 80 90 100

NC

100 lfm

(0.5m/s)

Figure 16. Derating Output Current versus Local Ambient Temperature and Airflow.

(V) (5V/div)

O

(V) (10V/div) V

On/off

V

On/Off VOLTAGE OUTPUT VOLTAGE

TIME, t (2ms/div)

Figure 17. Typical Start-up Using Remote On/Off (V = V

IN,NOM, Io = Io,max).

IN

(V) (5V/div)

(V) (100mV/div)

O

(A) (2A/div) V

O

OUTPUT CURRENT OUTPUT VOLTAGE

I

igure 15. Transient Response to Dynamic Load

F

TIME, t (10μs /div)

change from 50% to 100% of full load with di/dt of

O

(V) (20V/div) V

IN

V

INPUT VOLTAGE OUTPUTVOLTAGE

TIME, t (2ms/div)

Figure 18. Typical Start-up Using Input Voltage (VIN = 20V, I

o = Io,max).

5A/μs.

LINEAGE POWER 8

Data Sheet September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

Characteristic Curves (continued)

The following figures provide typical characteristics for the AXB050X module at 15V, 3A and 25oC.

100

4

EFFICIENCY, η (%)

95

90

85

80

75

70

0 0.5 1 1.5 2 2.5 3

Vin=30V

Vin=24V

Vin=20V

3

2

1

0

20 30 40 50 60 70 80 90 100

OUTPUT CURRENT, Io (A)

NC

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

Figure 19. Converter Efficiency versus Output Current. Figure 22. Derating Output Current versus Local

Ambient Temperature and Airflow.

(V) (5V/div)

O

(V) (20mV/div)

O

V

OUTPUT VOLTAGE

TIME, t (1μs/div)

Figure 20. Typical output ripple and noise (VIN =

IN,NOM, Io = Io,max).

V

(V) (10V/div) V

On/off

V

On/Off VOLTAGE OUTPUT VOLTAGE

TIME, t (2ms/div)

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

(V) (50mV/div)

O

(A) (1A/div) V

O

OUTPUT CURRENT, OUTPUT VOLTAGE

I

TIME, t (10μs /div)

Figure 21. Transient Response to Dynamic Load change from 50% to 100% of full load with di/dt of

(V) (5V/div)

O

(V) (20V/div) V

IN

INPUT VOLTAGE OUTPUT VOLTAGE

V

TIME, t (2.5ms/div)

Figure 24. Typical Start-up Using Input Voltage (VIN = 20V, Io = Io,max).

5A/μs.

LINEAGE POWER 9

Data Sheet

W

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: Non-isolated Power Modules:

Test Configurations

V

COM

150μF

O

V

CURRENT PROBE

CIN

Min

SCOPE

O

VIN(+)

COM

RESISTIVE LOAD

R

contactRdistribution

R

contactRdistribution

R

LOAD

TO OSCILLOSCOPE

L

TEST

1μH

CS 220μF

BATTERY

NOTE: Measure input reflected ripple current with a simulated

E.S.R.<0.1Ω

@ 20°C 100kHz

source indu ctance (L possibl e batter y impedance. M easure cur rent as shown above.

) of 1μH. Capacitor CS offsets

TEST

Figure 25. 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

GROUND PLANE

Figure 26. Output Ripple and Noise Test Setup.

R

contact

distribution

R

distribution

R

contact

VIN(+)

V

IN

COM

Design Considerations

Input Filtering

The Austin LynxTM 24V SMT 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.

Output Filtering

The Austin LynxTM 24V SMT module is designed for low

output ripple voltage and will meet the maximum output

ripple specification with 1 µF ceramic and 10 µF

tantalum 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.

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, CSA C22.2 No. 60950-00, EN60950

(VDE 0850) (IEC60950, 3

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.

rd

edition) Licensed.

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.

Figure 27. Output Voltage and Efficiency Test Setup.

. I

V

O

Efficiency

=

η

VIN. I

O

IN

x 100 %

LINEAGE POWER 10

Data Sheet September 10, 2013

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

Austin Lynx

Feature Description

Remote On/Off

The Austin LynxTM 24V SMT power modules feature an On/Off pin for remote On/Off operation. Positive Logic On/Off signal, device code suffix “4”, turns the module ON during a logic High on the On/Off pin and turns the module OFF during a logic Low.

For positive logic modules, the circuit configuration for using the On/Off pin is shown in Figure 28. The On/Off pin is an open collector/drain logic input signal (Von/Off) that is referenced to ground. During a logic-high (On/Off pin is pulled high internal to the module) when the transistor Q1 is in the Off state, the power module is ON. Maximum allowable leakage current of the transistor when Von/off = V logic-low when the transistor Q1 is turned-On, the power module is OFF. During this state VOn/Off must be less than 1.2V. When not using positive logic On/off pin, leave the pin unconnected or tie to V

VIN+

ON/OFF

I

ON/OFF

GND

V

ON/OFF

Q1

+

_

R1

Figure 28. Remote On/Off Implementation circuit.

Remote Sense

The Austin Lynx 24V power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the Remote Sense pin (See Figure 29). The voltage between the Sense pin and Vo pin must not exceed 0.5V.

The amount of power delivered by the module is defined as the output voltage multiplied by the output current (Vo x Io). When using Remote Sense, the output voltage of the module can increase which increases the power output of the module. Make sure that the maximum output power of the module remains at or below the maximum rated power. When the Remote Sense feature is not being used, connect the Remote Sense pin to the output of the module.

is 10µA. Applying a

IN,max

IN.

MODULE

R2

Q2

PWM Enable

R3

R4

Q3 CSS

TM

24V: Non-isolated Power Modules:

R

distribution

R

distribution

R

contact

R

contact

VIN(+)

COM

V

Sense

COM

O

R

contact Rdistribution

R

contact Rdistribution

Figure 29. Effective Circuit Configuration for Remote Sense operation.

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 average output current during hiccup is 20%

I

.

O, max

Input Undervoltage Lockout

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.

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 130

exceeded at the thermal reference point T

thermal shutdown is not intended as a guarantee that

the unit will survive temperatures beyond its rating.

. The

ref

Once the unit goes into thermal shutdown it will then

wait to cool before attempting to restart.

Output Voltage Programming

The output voltage of the Austin Lynx 24V can be

programmed to any voltage in the specified ranges by

connecting a resistor (shown as Rtrim in Figure 30)

between the Trim and GND pins of the module. Without

an external resistor between the Trim and GND pins,

the output of the module will be at the low-end of the

specified range. To calculate the value of the trim

resistor, Rtrim for a desired output voltage, use the

following equations:

For the AX030A0X modules,

Rtrim



Vo



10500



= 3480

−

018.3



Ω

−

 

R

o

C is

LOAD

LINEAGE POWER 11

Data Sheet

W

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: Non-isolated Power Modules:

Feature Descriptions (continued)

Output Voltage Programming

For the AX050A0X modules,

10500



= 1000

Rtrim



−

Vo



where, Rtrim is the external resistor in Ω and

Vo is the desired output voltage

V

(+)

IN

ON/OFF

GND

(+)

O

TRIM

Figure 30. Circuit configuration to program output voltage using an external resistor.

By using a ±0.5% tolerance trim resistor with a TC of ±100ppm, a set point tolerance of ±2% can be achieved as specified in the electrical specifications. 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.

Voltage Margining

Output voltage margining can be implemented in the Austin Lynx 24V modules by connecting a resistor, R margining-up the output voltage and by connecting a resistor, R margining-down. Figure 31 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 voltage and % margin. Please consult your local Lineage Power technical representative for additional details.

, from the Trim pin to the ground pin for

margin-up

margin-down

, from the Trim pin to output pin for

and R

margin-up

margin-down

(continued)



Ω

−

021.5

 

Rtrim

for a specific output

LOAD

Vo

Rmargin-down

Austin Lynx or Lynx II Series

Q2

Trim

Rmargin-up

Rtrim

Q1

GND

Figure 31. Circuit Configuration for margining the

output voltage.

LINEAGE POWER 12

Data Sheet

W

September 10, 2013

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

Austin Lynx

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 32. 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.

ind Tunnel

PWBs

25.4_ (1.0)

Power Module

76.2_ (3.0)

x

TM

24V: Non-isolated Power Modules:

Figure 33. T

Temperature measurement location.

ref

The thermal reference point, T

specifications is shown in Figure 33. For reliable

operation this temperature should not exceed 125

used in the

ref

o

C.

The 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.

Probe Location

12.7_

(0.50)

for measuring airflow and ambient temperature

Air

flow

Figure 32. Thermal Test Set-up.

LINEAGE POWER 13

Data Sheet

W

N

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50

TM

24V: Non-isolated Power Modules:

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.)

on Co-planarity (max): 0.15 (0.006)

LINEAGE POWER 14

Data Sheet September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

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.)

LINEAGE POWER 15

Data Sheet September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

Packaging Details

The Austin LynxTM 24V SMT versions are supplied in tape & reel as standard. Modules are shipped in quantities of 250 modules per reel.

Tape Dimensions

Reel Dimensions

Outside diameter: 330.2 mm (13.00)

Inside diameter: 177.8 mm (7.00”) Tape Width: 44.0 mm (1.73”)

LINEAGE POWER 16

Data Sheet September 10, 2013

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

Surface Mount Information

Pick and Place

The Austin LynxTM 24V SMT modules use open frame construction and are designed for fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operation. 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 product information such as product code, serial number and location of manufacture.

o

C. The label also carries

Austin Lynx

following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability.

In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than 235 wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by accurately measuring the modules CP connector temperatures.

TM

24V: Non-isolated Power Modules:

o

C. Typically, the eutectic solder melts at 183oC,

300

250

200

Peak T emp 235oC

Heat zone

oCs-1

max 4

Co o ling zo ne

oCs-1

1- 4

Figure 34. Pick and place Location.

Nozzle Recommendations

The module weight has been kept to a minimum by using open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The minimum recommended nozzle diameter for reliable operation is 6mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 9 mm.

Oblong or oval nozzles up to 11 x 9 mm may also be used within the space available.

For further information please contact your local Lineage Power technical representative.

Tin Lead Soldering

The Austin LynxTM 24V SMT power modules are lead free modules and can be soldered either in a lead-free solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The

15 0

10 0

REFLOW TEMP (°C)

50

0

Soak zone 30-240s

Preheat zo ne

oCs-1

max 4

REFLOW TIME (S)

T

above

lim

o

205

C

Figure 35. Reflow Profile for Tin/Lead (Sn/Pb) process.

240

235

230

225

220

215

210

MAX TEMP SOLDER (°C)

205

200

0 102030405060

Figure 36. Time Limit Curve Above 205oC for Tin/Lead (Sn/Pb) process.

LINEAGE POWER 17

Data Sheet September 10, 2013

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

Austin Lynx

Surface Mount Information (continued)

Lead Free Soldering

The –Z version Austin Lynx 24V SMT modules are lead-free (Pb-free) and RoHS compliant and are both forward and backward compatible in a Pb-free and a SnPb 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.

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 Figure. 37.

MSL Rating

The Austin Lynx 24V SMT modules have an MSL rating of 2a.

Storage and Handling

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-STD-033A). 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.

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).

TM

24V: Non-isolated Power Modules:

300

Per J-STD-020 Rev. C

250

200

150

Heat ing Zone

1°C/Second

100

Reflow Temp (°C)

50

0

Figure 37. Recommended linear reflow profile using Sn/Ag/Cu solder.

Peak Temp 260°C

* Min. Time Above 235°C 15 Seconds

*Time Above 217°C

60 Seconds

Reflow Time (Seconds)

Cooling

Zone

LINEAGE POWER 18

Data Sheet

a

©

September 10, 2013

Austin Lynx

18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W

TM

24V: Non-isolated Power Modules:

Ordering Information

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

Table 1. Device Codes

Device Code

AXB030X43-SR 18 – 30Vdc 3.0 – 6.0Vdc 30W Positive SMT 108992673

AXB030X43-SRZ 18 – 30Vdc 3.0 – 6.0Vdc 30W Positive SMT CC109106738

AXB050X43-SR 20 – 32Vdc 5.0 – 15.0Vdc 50W Positive SMT 108992681

AXB050X43-SRZ 20 – 32Vdc 5.0 – 15.0Vdc 50W Positive SMT CC109104857

Input

Voltage Range

-Z refers to RoHS-compliant codes

Output

Voltage

Output

Power

On/Off

Logic

Connector

Type

Comcodes

Asia-Pacific Headquarters

Tel: + 65 6593 7211

World Wide Headquarters Lineage Power Corporation

601 Shil oh Roa d, Plano, TX 75074, USA +1-800-526-7 819 (Outsi de U.S.A.: +1-972-244-9428)

www.lineagepower.com e-mail: techs upport1@lineagepower.com

Linea ge Power res erves th e right to make change s to the prod uct(s) or i nformat ion contained herein without not ice. No l iability is assumed as a result o f their use o r

pplication . No righ ts under any patent accompany the sal e of an y such produc t(s) or informati on.

Linea ge Power D C-DC pro ducts are p rotected unde r various pa tents. Infor mation on these pa tents is av ailable at ww w.line agepower .com/paten ts.

2009 Line age Power Corporation, (Plan o, Texas) All Inte rnation al Rights Reserved.

Europe, Middle-East and Africa Headquarters

Tel: + 49 898 780 672 80

India Headquarters Tel: + 91 80 2841163 3

LINEAGE POWER 19

Document No: DS05-032 ver.1.24

PDF name: lynx_24v_ds.pdf