ATC210 Dual Series | 210 W DC-DC
Intermediate Bus Converters
Turn On/Off
Characteristic
Input voltage - turn-on
Input voltage - turn-off
Input voltage - turn-on
Input voltage - turn-off
Rise time
Symbol
Vin (on)
Vin (uvlo)
Vin (on)
Vin (ovlo)
Trise_3.3 V
Trise_12 V
Min
Typ
Max
-36
-32
-72
-77.5
1.1
20
Units
Vdc
Vdc
Vdc
Vdc
ms
ms
0 to 90%, full load, max output
capacitance. 3.3 V comes up first
0 to 90%, full load, max output
capacitance.
Notes and Conditions
Signal Electrical Interface
Characteristic - Signal Name Symbol
Remote ON/OFF
(Input only) pins 14 and 13
Min
Typ
Max
Units
Notes and Conditions
Isolated floating opto coupler
input. Can use 3.3 V output
(secondary) or directly
use enable A or B (primary) to
turn on main 12 V output
Iih
Iih (leakage)
Vil
3.0
1.6
5.0
10
mA
µA
V
Current flowing (into pin 14, out
of pin 13) to turn on 12 V output
Acceptable leakage current (into
pin 14, out of pin 13)
Converter is guaranteed on
when r/c voltage (pin 14 wrt to
pin 13) is equal to or greater
than Vil (min)
Maximum photodiode voltage drop
Series resistance between pin 14
and pin 13
Isolation of signal from primary
and from secondary circuits
according to EN60950 and UL60950
Two open collector outputs,
used to monitor the status of
-48 V_A and -48 V_B buses
respectively. Signal is active low,
when buses are ‘OK’
35.0
Minimum voltage required at the
input to IBC for A_OK# and
B_OK# to be okay
0.8
3.4
10
mA
µA
Sink current capability of each pin
Maximum leakage current in
open collector transistor when
pin is pulled to 3.3 V
Isolation of signal pins from
primary circuits according to
EN60950 and UL60950
Allows the 3.3 V to be trimmed
up and down
3.13
3.48
3.16
8.06
3.52
V
V
kΩ
Connect trim pin to output return
to trim high, and to 3.3 Vout to
trim low. See Application Note 205
V/mA, current from pin
increases output voltage
See Application Note 205 for
further details
Input current
Acceptable high level
Low level input voltage
Opto coupler voltage drop
Internal resistance
Isolation
Vd(on)
Rint
1.0
Basic
1.5
V
kΩ
A_OK# and B_OK#
(Output only) pins 16 and 17
Input Voltage (IBC)
Input current (sink)
Maximum allowable
leakage current
Isolation
Iol
Iol_leakage
0.3
Basic
3.3 V Trim (Input only)
pin 27/28
Controlled output voltage range Vo trim up
Vo trim down
Programme/V select law
Rcontrol
3
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File Name: atc210.pdf Rev: 16 Aug 2006
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