PAC5210 Datasheet, PDF (39/69 Pages) Active-Semi, Inc – Power Application Controller

PAC5210
Power Application Controller
12.3. Functional Description
The Application Specific Power Drivers (ASPD, Figure 12-1) module handles power driving for power control
applications.
The PAC5210 contains only medium-voltage open-drain drivers (OMx pins). The open-drain drivers provide
activation control for relays, LEDs, buffers, and other loads.
Table 12-1. Power Driver Resources
PART
NUMBER
PAC5210
OPEN-DRAIN DRIVER
OMx
3 (23V/ 40mA)
The ASPD includes built-in configurable fault protection for the internal gate drivers. On the PAC5210, the
protection signals ENHS1 and ENHS2 are provided for external circuitry driver fault protection.
12.3.1. Open-Drain Drivers
The OMx pin is a 23V open-drain driver output controlled by a register bit. The OMx is capable of driving 40mA.
The OMx pin is switched to VSSP with 17Ω impedance in the on state when the corresponding bit is '1', and is in
the high-impedance off state when the corresponding bit is '0'.
12.3.2. Power Drivers Control
All power drivers are initially disabled from power-on-reset. To enable the power drivers, the microprocessor
must first set the driver enable bit to '1'. The OMx open-drain drivers are controlled by their corresponding
register bits. Refer to the PAC application notes and user guide for additional information on power drivers
control programming.
12.3.3. Gate Driver Fault Protection
The ENHS1 (protection group 1 control output) and ENHS2 (protection group 2 control output) pins are provided
for enabling external power drivers with fault protection.
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Rev 1.0‒February 28, 2014