Rev. 02.25.11_111

IPM300 Series

2 of 3

Embedded Power for

Business-Critical Continuity

313

process

yellow

3405

1797

1375

116

2607

652

242

2985

375

240

Pin Assignments

Pin Number/Pin Name Function

Note

1. -48V A Feed

Power input from A’ bus

Connects to ATCAZone 1 connector pin 33 via external 12 A fuse

2. -48V B Feed

Power input from B’ bus

Connects to ATCAZone 1 connector pin 34 via external 12 A fuse

3. 48V Return A Feed

Power return from A’ bus

Connects to ATCAZone 1 connector pin 28 via external 12 A fuse

4. 48V Return B Feed

Power return from B’ bus

Connects to ATCAZone 1 connector pin 29 via external 12 A fuse

5. Enable A Feed

When connected to RTN A, turns ON isolated open col-

lector A enabled’ device (See Note 3)

Connects to ATCAZone 1 connector pin 32 via external 1 A fuse. Used

to signal to management suystem correct board insertion and

presence of A’ bus

6. Enable B Feed

When connected to RTN B, turns ON isolated open col-

lector B enabled’ device (See Note 3)

Connects to ATCAZone 1 connector pin 27 via external 1 A fuse. Used

to signal to management suystem correct board insertion and

presence of B’ bus

7. SHELF_GND

Shelf/Chassis/Safety Ground

8. +5.0V Management

Power

+5.0V Management Power - Blue Service LED

9. +3.3V Management

Power

3.3V Isolated Management Power Output

10. Address

I2C Address

11. Data

I2C Data

12. Clock

I2C Clock

13. LOGIC_GND

Logic/Secondary/Isolated Ground

14. ALARM

Opto-Isolated -48V A/B Feed Loss or Open Fuse Alarm

with respect to LOGIC_GND

15. -48V_OUT

OR’d and Inrush Protected -48VDC Output

The -48VDC Output connects directly to the Input of an External

DC-DC Converter

16. Holdup Trim

Adjustable 50 to 95 V Hold Up Trim

17. VRTN_OUT

OR’d and Inrush Protected -VRTN Output

The VRTN_Out connects directly to the Input of an External DC-DC

Converter

18. Holdup Capacitor

Holdup/Bulk Capacitor output voltage

Notes:

1. Regulation band over line, load and temperature.

2. Measured at 20 MHz with external 22 mF Tantalum in parallel with 1 mF ceramic, 25 V rated low ESR type capacitors across each output.

4. All specifications are typical at nominal line, TA = 25 °C unless otherwise indicated.

5. All specifications are subject to change without notice.

6. Technical Reference Notes and Application Notes should be consulted for complete product details

7. Warranty 2 years.

Part Number System with Options

Ordering Information

Model Number

Input

Output

Output Current

Typical

Note

IPM300

-36 to -75 Vdc

3.3 V

5.0 V

3.6 A

0.150 A

98% @ -48 V / 300 W