Data Sheet
12V Austin LynxTM SIP Non-isolated Power Modules, Programmable:
10Vdc – 14Vdc input; 0.75Vdc to 5.5Vdc Output;10A Output Current
March 30, 2008
Feature Description
Overtemperature Protection
Remote On/Off
To provide protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit will
shutdown if the thermal reference point Tref, exceeds
125oC (typical), but the thermal shutdown is not
intended as a guarantee that the unit will survive
temperatures beyond its rating. The module will
automatically restarts after it cools down.
The 12V Austin Lynx Programmable SIP power
modules feature an On/Off pin for remote On/Off
operation. If not using the remote On/Off pin, leave the
pin open (module will be On). The On/Off pin signal
(Von/Off) is referenced to ground. To switch the module
on and off using remote On/Off, connect an open
collector npn transistor between the On/Off pin and the
ground pin (See Figure 27).
During a logic-high (On/Off pin is pulled high internal to
the module) when the transistor is in the Off state, the
power module is ON. The maximum allowable leakage
current of the transistor when Von/off = VIN,max is 10µA.
During a logic-low when the transistor is turned-on, the
power module is OFF. During this state VOn/Off is less
than 0.3V and the maximum IOn/Off = 1mA.
VIN+
MODULE
R2
ON/OFF
Q2
+
R1
V
ON/OFF
I
ON/OFF
PWM Enable
R3
R4
Q1
Q3
CSS
GND
_
Figure 27. Circuit configuration for using positive
logic On/OFF.
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current limiting
continuously. At the point of current-limit inception, the
unit enters hiccup mode. The unit operates normally
once the output current is brought back into its specified
range. The typical average output current during hiccup
is 3A.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, module operation is disabled. The module will
begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
LINEAGE POWER
12
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
