Datasheet

www.microchip.com/power 7
AC Input
Rectified
Sinusoidal
Voltage
400 V
DC
12 VDC
23A
5 V
DC
Isolation
Barrier
EMI Filter
and Bridge
Rectifier
PFC
Boost
Converter
Synchronous
Rectifier
Multi-Phase
Buck Converter
DC
Output
Full-Bridge
Converter
Opto-
Coupler
Single-Phase
Buck Converter
dsPIC33F
dsPIC33F
Phase Shift ZVT Converter
The features of the dsPIC DSC
devices enable full digital control
of applications such as this AC-DC
converter. The high-speed PWM
module with multiple advanced
operating modes helps implement
various advanced conversion stages
such as PFC, phase shift zero
voltage transition converter with full-
bridge conversion and synchronous
rectification and multi-phase buck
converters. Our high-speed ADC
conversions can be triggered at
precise times in relation to the PWM
signal supporting fast control loops.
The high-performance CPU enables
implementing advanced PID digital
control loops and compensators in
software.
AC-DC Conversion with Complete Digital Control
Phase-Shifted Full-Bridge DC-DC Converter
The dsPIC33FJXXGS
DSC family in power
efficient and highly
integrated DC-DC
converters dynamically
controls different
power stages. High-
speed ADC, PWM
and comparators
work together without
using much CPU
bandwidth. Faster
digital control loops
and compensators
can be executed using
a high-performance
DSP engine. Advanced
features such as
dynamic load response,
protections, sequencing,
remote control and
communications can
also be implemented.
FET
Driver
Gate 2
Gate 1
S1
Gate 4
Gate 3
S1
Analog
Ground
Gate 5
Gate 5
Gate 6
Gate 6
Gate 3
Gate 4
Gate 2
Gate 1
V
IN+
V
IN-
VOUT+
V
OUT-
S1
S3
K 1
K 2
dsPIC33FJ06GS202
PWM
Output
ADC
Channel
PWM
Output
ADC
Channel
PWM
Output
MCP1404
FET
Driver
TC4422A
FET
Driver
Power Supply Design Integration Levels