FGSR12SR6003A Datasheet, PDF (7/23 Pages) List of Unclassifed Manufacturers – 3-14.4Vdc Input, 3A, 0.6-5.5Vdc Output

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FGSR12SR6003*A
3-14.4Vdc Input, 3A, 0.6-5.5Vdc Output
Series
Data Sheet
Feature Descriptions
Remote On/Off
The FGSR12SR6003*A 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, (device code suffix “P” - see Ordering
Information), 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, (device code
suffix “N” - see Ordering Information), the module
turns OFF during logic High and ON during logic Low.
The On/Off signal should be 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 Fig-3. When the
external transistor Q1 is in the OFF state, the internal
PWM Enable signal is pulled high through an internal
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 20k.
+VIN
MODULE
VIN
30K
Rpullup
30K
ENABLE
ION/OFF
+
Q2
VON/OFF
20K
20K
Q4 _0.047uF
Q3
20K
20K
_
GND
Fig-3: Circuit configuration for using positive
On/Off logic.
For negative logic On/Off modules, the circuit
configuration is shown in Fig-4. The On/Off pin
should be pulled high with an external pull-up resistor
(suggested value for the 3V to 14.4V input range is
20Kohms). When transistor Q1 is in the OFF state,
the On/Off pin is pulled high, internal transistor Q4 is
turned ON and the module is OFF. To turn the
module ON, Q1 is turned ON pulling the On/Off pin
low, turning transistor Q4 OFF resulting in the PWM
Enable pin going high and the module turning ON.
VIN+
Rpullup
MODULE
ON/OFF
I _ON/OFF
+
V_ON/OFF
Q1
GND
_
22K
22K
PWM Enable
Q4
CSS
PVX012 NEGATIVE LOGIC FIGURE
Fig-4: Circuit configuration for using negative
On/Off logic.
Monotonic Start-up and Shut-down
The module has monotonic start-up and shutdown
behavior for any combination of rated input voltage,
output current and operating temperature range.
Startup into Pre-biased Output
The module can start into a prebiased output as long
as the prebias voltage is 0.5V less than the set output
voltage.
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Page 7 of 23
Ver 2.0 Nov. 11, 2013