DS1600SPE Data Sheet

Control and Status Signals

Output Signals

PS_PRESENT

Signal used to indicate to the system that a power supply is inserted in the power bay. This pin is shorted to the standby return in the power supply. Recommended

pull-up resistor to 12 VSB is 8.2 k with a 3.0 k pull-down to ground. A 100 pF decoupling capacitor is also recommended.

PS_INTERRUPT

Active low signal used by the power supply to indicate to the system that a change in power supply status has occurred. This event can be triggered by faults such

as OVP, OCP, OTP, and fan fault. This signal can be cleared by a CLEAR_FAULT command. Recommended pull-up resistor to 12 VSB is 8.2 k with a 3.0 k

pull-down to ground. A 100 pF decoupling capacitor is also recommended.

MIN

MAX

V

IL

Output logic level LOW

0.8 V

V

IH

Output logic level HIGH

2.0 V

5.0 V

I

SOURCE

Current that may be sourced by this pin

4 mA

I

SINK

Current that may be sunk by this pin at low state

4 mA

BUS Signals

ISHARE

Bus signal used by the power supply for active current sharing. All power supplies configured in the system for n+n sharing will refer to this bus voltage inorder to

load share.

Voltage Range

The range of this signal for active sharing will be up to 8.0 V, which corresponds to the maximum output current.

MIN

MAX

I

Voltage at 100% load, stand-alone unit

7.75

8.25

Voltage at 50% load, stand-alone unit

3.85

4.15

I

SOURCE

Current that may be sourced by this pin

160 mA

SCL, SDA, A0, A1, A2

Clock, data and addressing signals defined as per I2C requirements. It is recommended that these pins be pulled-up to a 2.2 kohm resistor to 3.3 V and a 22 pF

decoupling capacitor at the system side.

MIN

MAX

V

L

Logic level LOW

0.8 V

V

H

Logic level HIGH

2.0 V

5.0 V

Note: All signal noise levels are below 400 mVpk-pk from 0 - 100 MHz.

A2

A1

A0

PMBus (W/R)

FRU (W/R)

0

0

0

B0/B1

A0/A1

0

0

1

B2/B3

A2/A3

0

1

0

B4/B5

A4/A5

0

1

1

B6/B7

A6/A7

1

0

0

B8/B9

A8/A9

1

0

1

BA/BB

AA/AB

1

1

0

BC/BD

AC/AD

1

1

1

BE/BF

AE/AF