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PASS

FAIL

Over Current Protection

N/T

N/A

Model :

Date :

2023/5/12

Reference

1.      Equipment :

(1)    AC Source : Chroma 6530

(2)    DC Load : Chroma 63102/63103

(3)    Oscilloscope : Tektronix TDS 5054B

(4)    Current Probe : Tektronix TCPA300/TCP303

2.      Test Condition :

(1)    AC Input Voltage : Min. and Max. of Input Voltage

(2)    Input Frequency : 60Hz /50Hz

(3)    Use Load :  Min Load

(4)    Temperature :Room Ambient Temperature

(5)   Wavefrom Requirement  :  12V/PG/3.3V/5V/Standby/-12V

3.      Spec :

Over current is a fault condition defined as a 1A/Sec current ramp starting from full load applied to the output

under test. The other outputs may be set to any condition defined in the PSU parametric

specification. A fault on any output will cause the rest of the outputs to latch off/Recovery (also see exception notes

below).

Notes:

1. The output current limits will be satisfied throughout the entire operating temperature range as defined

in Section 5.4

2. A fault on any output other than Standby will not cause the Standby to turn off. A fault on Standby will

cause the other outputs to turn off but not latch off.

3. The Standby output will not latch off. It must return to normal operation once the fault is removed.

4. Under any continuous loading conditions allowed by the over current protections, the power supply

shall not be damaged.

Over current Protection

Outputs

Over Current Limit ( I out Limit )

+3.3V

120% minimum; 180% maximum

+5V

120% minimum; 180% maximum

+5VSB and -12V

Self-protection

+12V rails

130% minimum; 180% maximum

4.      Test Result :

PASS

Output

AC Input

Test  Data

AC Input

Test  Data

Spec

Output Measured

Output Measured

V

A

V*A

V

A

V*A

+12V

90V

11.87V

198.29A

2353.7

264V

11.93V

190.58A

2273.6

130% minimum; 180% maximum

-12V

10.36V

4.015A

41.6

9.248V

4.115A

38.1

Self-protection

5V

5.115V

39.48A

201.9

5.082V

39.23A

199.4

120% minimum; 180% maximum

3.3V

3.293V

37.98A

125.1

3.297V

37.71A

124.3

120% minimum; 180% maximum

5VSB

4.873V

6.445A

31.4

4.865V

6.549A

31.9

Self-protection

12V 90Vac/60Hz

12V 264Vac/50Hz

(1) Iout (2) +12V (3) PG (4) 5Vsb

(1) Iout (2) +12V (3) PG (4) 5Vsb

-12V 90Vac/60Hz

-12V 264Vac/50Hz

(1) Iout (2) -12V (3) PG (4) 5Vsb

(1) Iout (2) -12V (3) PG (4) 5Vsb

5V 90Vac/60Hz

5V 264Vac/50Hz

(1) Iout (2) 5V (3) PG (4) 5Vsb

(1) Iout (2) 5V (3) PG (4) 5Vsb

3.3V 90Vac/60Hz

3.3V 264Vac/50Hz

(1) Iout (2) 3.3V (3) PG (4) 5Vsb

(1) Iout (2) 3.3V (3) PG (4) 5Vsb

5Vsb 90Vac/60Hz

5Vsb 264Vac/50Hz

(1) Iout  (3) PG (4) 5Vsb

(1) Iout  (3) PG (4) 5Vsb

5Vsb 90Vac/60Hz Auto Recovery

5Vsb 264Vac/50Hz Auto Recovery

(1) Iout  (3) PG (4) 5Vsb

(1) Iout  (3) PG (4) 5Vsb