ATC210 datasheet(4/16 Pages) EMERSON-NETWORKPOWER

4 / 16 page

SXA10 Series

| 15W DC-DC

ATC210 Dual Series | 210 W DC-DC

Intermediate Bus Converters

Signal Electrical Interface Contd.

File Name: atc210.pdf Rev: 16 Aug 2006

Characteristic - Signal Name Symbol

Min

Typ

Max

Units

Notes and Conditions

Interrupt (output only) pin 18

Output, which goes active low

when any of the measured

parameters goes outside its

limits. See Application Note 205

for further detail

High level output voltage

Voh

2.90

3.10

3.30

Interrupt is not active

Low level output voltage

Vol

0.1

Interrupt is active

High level output current

Ioh

5.0

Output source current

Low level sink current

Iol

5.0

Output sink current

I2C Bus (input and output)

SDA and SCL referenced to

pins 20 and 22

secondary side 3.3 V return

Low level sink current

Iol

5.0

provide the communication path

with the ‘host’ system.

See Application Note 205 for

further details

Clock frequency

I2Cfreq

100

kHz

This value is fixed

Address A0, A1, A2

Forms part of the I2C binary

pins 21, 19 and 17 (input only)

address. These are hardwired

to logic ‘1’ via 10 k pull-ups, but

can be configured to logic ‘0’ by

connecting to 3.3 V output

return via zero

Ω link(s).

See Application Note 205 for

further details

Enable A & B (input only)

These two inputs effectively

connect to their respective

returns once the Zone1

connector mates with the Zone1

socket on the backplane. Both

Enables must mate to start up

the unit

Holdup Characteristics

Characteristic

Symbol

Min

Typ

Max

Units

Notes and Conditions

Hold up capacitance

Choldup

Chold_min

8,000

µF

Chold_min depends on load and

requirement

hold up requirement on customer

system. See Application Note 205

Clamp voltage

Vcl

41.0

41.5

Voltage on hold up capacitors

(pin 12 wrt pin 9) when input is

43 V and 210 W load

Clamp voltage OVP

Vcl_ovp

48.0

If the clamp voltage exceeds

Vcl_ovp, the unit trips. Reset is

achieved by cycling the input

power

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