Data Sheet

Compact Power Line

CP2725AC54 Front-End Power Supply

Lineage Power

7

Signal Definitions

All hardware alarm signals (Fault, PFW, OTW, Power Capacity) are open drain FETs. These signals

should be pulled HI to either 3.3V or 5V. Maximum sink current 5mA. An active LO signal (< 0.4Vdc)

state. All signals are referenced to Logic GRD unless otherwise stated. Contact your Lineage Power

representative for more details.

Function

Label

Type

Description

Output Enable

Enable

Input

If shorted to LOGIC_GRD, the rectifier output is enabled

when using I

reset a latched OFF rectifier. Function not available in

RS485 mode.

Power Fail Warning

PFW

Output

An open drain FET; normally HI, indicating output power is

present. Changes to LO at least 5msec before the output

voltage is lost.

I

Alert#_0

Alert#_1

Output

Interrupt signal via I

requested from the host controller. This signal pin is pulled

up to 3.3V via a 10kΩ resistor and switches to active LO

when an interrupt occurs.

Rectifier Fault

Fault

Output

Indicates that an internal fault exists. An open drain FET;

normally HI, changes to LO.

Module Present

MOD_PRES

Output

Short pin, see Status and Control description for further

information on this signal.

ON/OFF

ON/OFF

Input

Short pin, connects last and breaks first; used to activate

and deactivate output during hot-insertion and extraction,

respectively. Ref: 54_OUT (-DC)

Protocol select

Protocol

Input

See Status and Control description for further information

on this signal. Ref: 54_OUT (-DC).

Margining

Margin

Input

Allows changing of output voltage through an analog

voltage input or via resistor divider.

Over-Temperature Warning

OTW

Output

An open drain FET; normally HI, changes to LO

approximately 5°C prior to thermal shutdown.

Power Capacity

POWER_CAP Output

Open drain FET; Used to indicate rectifier operation mode;

HI indicates 2725W operation and LO indicates 1200W

operation.

Rectifier address

Unit_addr

Input

Voltage level addressing of rectifiers within a single shelf.

Ref: 54_OUT (-DC).

Shelf Address

Shelf_addr

Input

Voltage level addressing of rectifiers within multiple

shelves. Ref: 54_OUT (-DC).

Back bias

8V_INT

_

Diode OR’ed 8Vdc drain; used to back bias

microprocessors and DSP of failed rectifier from operating

rectifiers. Ref: 54_OUT (-DC).

Mux Reset

Reset

Input

Resets the I

Standby power

5VA

-

5V at 0.75A provided for external use by either adjacent

power supplies or the using system.

Current Share

Ishare

-

A single wire interface between each of the power unit

forces them to share the load current. Ref: 54_OUT (-DC).

I

SCL_0, SDA_0 Input

I

I

SCL_1, SDA_1 Input

I

RS485 Line

RS_485+

RS_485-

Input

RS485 line.