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Electrical functions
3.11
Remote ON/OFF
If an input voltage has been connected to the Power Supply
Unit, the Remote ON/OFF function is used to turn the DC
Main Output on and off.
The Remote ON/OFF function works independently from
the input voltages
The Remote ON/OFF control logic is selectable via
PMBus™:
Write 0x0000 to address 0xDF for low level active
Write 0x0001 to address 0xDF for high level active
IMA-x1000-xx-YYPLI (High level active)
If there is no connection to J3 Pin 10 (Remote ON/OFF),
the power supply will turn on.
The Main DC Output is switched on when J3 Pin 10
(Remote ON/OFF) and 5VSB_RTN (J3 Pin 3, J3 Pin 4 or
J3 Pin 7) are opened.
The Main DC Output is switched off when J3 Pin 10
(Remote ON/OFF) and 5VSB_RTN (J3 Pin 3, J3 Pin 4 or
J3 Pin 7) are shorted.
IMA-x1000-xx-YYPLY (Low level active)
If there is no connection to J3 Pin 10 (Remote ON/OFF),
the power supply will not turn on.
The Main DC Output is switched on when J3 Pin 10
(Remote ON/OFF) and 5VSB_RTN (J3 Pin 3, J3 Pin 4 or
J3 Pin 7) are shorted.
The Main DC Output is switched off when 3 Pin 10
(Remote ON/OFF) and 5VSB_RTN (J3 Pin 3, J3 Pin 4 or
J3 Pin 7) are opened.
Remote On/Off
Main DC Output
and 5VSB_RTN
shorted
open
shorted
open
Table 6:
Remote ON/OFF switching logic for YYPLI &
YYPLY
8
OFF
IMA-x1000-xx-
YYPLI
ON
ON
IMA-x1000-xx-
YYPLY
OFF
An internal pull up resistor with 1 kΩ is connected to +5VSB
standby power, see Fig. 11, p. 8.
Power Supply Unit
+5VSB
1 kΩ
REMOTE ON/OFF
Fig. 11: Remote ON/OFF circuit diagram
The Auxiliary DC Output is not affected by the Remote
ON/OFF function. The Auxiliary DC Output will always be
on if the AC input voltage is applied, regardless of the status
of the Remote ON/OFF signal.
IMA-x1000-xx-Series_Application_Note_V4.0_XX_EN_2019-08-19
J3
5VSB_RTN
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