Datasheet

PIC18(L)F2X/4XK22
DS41412F-page 194  2010-2012 Microchip Technology Inc.
14.4.2 FULL-BRIDGE MODE
In Full-Bridge mode, all four pins are used as outputs.
An example of full-bridge application is shown in
Figure 14-10.
In the Forward mode, pin CCPx/PxA is driven to its active
state, pin PxD is modulated, while PxB and PxC will be
driven to their inactive state as shown in Figure 14-11.
In the Reverse mode, PxC is driven to its active state, pin
PxB is modulated, while PxA and PxD will be driven to
their inactive state as shown Figure 14-11.
PxA, PxB, PxC and PxD outputs are multiplexed with
the PORT data latches. The associated TRIS bits must
be cleared to configure the PxA, PxB, PxC and PxD
pins as outputs.
FIGURE 14-10: EXAMPLE OF FULL-BRIDGE APPLICATION
PxA
PxC
FET
Driver
FET
Driver
V+
V-
Load
FET
Driver
FET
Driver
PxB
PxD
QA
QB
QD
QC