SLIN-06E2A_10 Datasheet, PDF (14/25 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.59 Vdc - 5.5 Vdc /6 A Outputs
December 3, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Remote On/Off
Parameter
Min
Signal Low (Unit On)
-0.2
Active Low
Signal High (Unit Off)
3.5
Signal Low (Unit Off)
-0.3
Active High
Signal High (Unit On)
3.5
Typ
Max Unit
Notes
-
0.6
V
The remote on/off pin open, Unit on.
-
Vin,max V
-
0.8
V
The remote on/off pin open, Unit on.
-
Vin,max V
The SLIN-06E2Ax power modules feature an On/Off pin for remote On/Off operation. Two On/Off logic options
are available. In the Positive Logic On/Off option, the module turns ON during a logic High on the On/Off pin and
turns OFF during a logic Low. With the Negative Logic On/Off option, the module turns OFF during logic High
and ON during logic Low. The On/Off signal is always referenced to ground. For either On/Off logic option,
leaving the On/Off pin disconnected will turn the module ON when input voltage is present.
For positive logic modules, the circuit configuration for using the On/Off pin is shown in the figure below. When
the external transistor Q1 is in the OFF state, the internal PWM Enable signal is pulled high through an internal
1.5MΩ resistor and the external pullup resistor and the module is ON. When transistor Q1 is turned ON, the
On/Off pin is pulled low and the module is OFF. A suggested value for R_pullup is 20kΩ.
VIN+
MODULE
Rpullup
1.5MEG
I _ON/OFF
ON/OFF
+
VON/OFF
2.05K PWM Enable
GND
Q1
_
Circuit configuration for using positive On/Off logic
For negative logic On/Off modules, the circuit configuration is shown below. The On/Off pin should be pulled high
with an external pull-up resistor (suggested value for the 4.5V to 14V input range is 20Kohms). When transistor
Q2 is in the OFF state, the On/Off pin is pulled high, transistor Q1 is turned ON and the module is OFF. To turn
the module ON, Q2 is turned ON pulling the On/Off pin low, turning transistor Q1 OFF resulting in the PWM
Enable pin going high.
VIN+
MODULE
Rpullup
1.5MEG
ON/OFF
I _ON/OFF
+
V_ON/OFF
Q2
GND
_
22K
22K
PWM Enable
Q1
Circuit configuration for using negative On/Off logic
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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