DSPIC33FJMC202ESS datasheet(159/330 Pages) MICROCHIP

159 / 330 page

DS70283K-page 159

dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304

15.0 MOTOR CONTROL PWM

MODULE

The dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304

device supports up to two dedicated Pulse-Width

Modulation (PWM) modules. The PWM1 module is a

6-channel PWM generator, and the PWM2 module is a

2-channel PWM generator.

The PWM module has the following features:

• Up to 16-bit resolution.

• On-the-fly PWM frequency changes.

• Edge and Center-Aligned Output modes.

• Single Pulse Generation mode.

• Interrupt support for asymmetrical updates in

Center-Aligned mode.

• Output override control for Electrically

Commutative Motor (ECM) operation or BLDC.

• Special Event comparator for scheduling other

peripheral events.

• Fault pins to optionally drive each of the PWM

output pins to a defined state.

Duty cycle updates configurable to be immediate or

synchronized to the PWM time base.

15.1

PWM1: 6-Channel PWM Module

This module simplifies the task of generating multiple

synchronized PWM outputs. The following power and

motion control applications are supported by the PWM

module:

• 3-Phase AC Induction Motor

• Switched Reluctance (SR) Motor

• Brushless DC (BLDC) Motor

• Uninterruptible Power Supply (UPS)

This module contains three duty cycle generators,

numbered 1 through 3. The module has six PWM

output pins, numbered PWM1H1/PWM1L1 through

PWM1H3/PWM1L3. The six I/O pins are grouped into

high/low numbered pairs, denoted by the suffix H or L,

respectively. For complementary loads, the low PWM

pins are always the complement of the corresponding

high I/O pin.

15.2

PWM2: 2-Channel PWM Module

This

module

provides

additional

pair

complimentary PWM outputs that can be used for:

• Independent PFC correction in a motor system

• Induction cooking

This module contains a duty cycle generator that

provides

two

PWM

outputs,

numbered

PWM2H1/PWM2L1.

Note 1: This data sheet summarizes the features

of the dsPIC33FJ32MC202/204 and

dsPIC33FJ16MC304 family of devices. It

is not intended to be a comprehensive

reference source. To complement the

information in this data sheet, refer to

Section 14. “Motor Control PWM”

(DS70187) of the “dsPIC33F/PIC24H

Family Reference Manual”, which is

available from the Microchip web site

(www.microchip.com).

2: Some registers and associated bits

described in this section may not be

available on all devices. Refer to

Section 4.0 “Memory Organization” in

this data sheet for device-specific register

and bit information.

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