AC162078 Microchip Technology, AC162078 Datasheet - Page 134

• Manufacturer Part Number: AC162078
• Description: HEADER INTRFC MPLAB ICD2 18F1330
• Manufacturer: Microchip Technology

Specifications of AC162078

• Accessory Type: Transition Header
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICD2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

PIC18F1230/1330
14.6.5
The Complementary mode of PWM operation is useful
to drive one or more power switches in half-bridge
configuration, as shown in Figure 14-16. This inverter
topology is typical for a 3-phase induction motor,
brushless DC motor or 3-phase Uninterruptible Power
Supply (UPS) control applications.
Each upper/lower power switch pair is fed by a
complementary PWM signal. Dead time may be
optionally inserted during device switching, where both
outputs are inactive for a short period (see
Section 14.7 “Dead-Time Generators”).
In Complementary mode, the duty cycle comparison
units are assigned to the PWM outputs as follows:
• PDC0 register controls PWM1/PWM0 outputs
• PDC1 register controls PWM3/PWM2 outputs
• PDC2 register controls PWM5/PWM4 outputs
PWM1/3/5 are the main PWMs that are controlled by
the
complemented outputs. When using the PWMs to
control the half-bridge, the odd number PWMs can be
used to control the upper power switch and the even
numbered PWMs can be used for the lower switches.
DS39758D-page 134
PDCx
COMPLEMENTARY PWM
OPERATION
registers
and
PWM0/2/4
are
the
FIGURE 14-16:
The Complementary mode is selected for each PWM
I/O pin pair by clearing the appropriate PMODx bit in
the PWMCON0 register. The PWM I/O pins are set to
Complementary mode by default upon all kinds of
device Resets.
+V
TYPICAL LOAD FOR
COMPLEMENTARY PWM
OUTPUTS
 2009 Microchip Technology Inc.
3-Phase
Load