User`s guide

SMPS AC/DC REFERENCE
DESIGN USER’S GUIDE
© 2008 Microchip Technology Inc. DS70320B-page 111
Index
A
Auxiliary Power Supply ............................................ 45
Auxiliary Software .................................................... 64
Fault Source Identification ................................ 65
Input AC Undervoltage Protection .................... 65
Output Sequencing ........................................... 64
Overtemperature Protection ............................. 65
Soft-Start and Soft-Shutdown........................... 65
B
Boost PFC Circuit .................................................... 12
Buck Converter ........................................................ 17
Buck PFC Circuit...................................................... 11
Buck/Boost PFC Circuit............................................ 12
C
Common Resources for PFC and
Phase-Shift ZVT Converter .................................. 23
Continuous Output Rating.......................................... 7
Control Scheme
Phase-Shift ZVT ............................................... 56
Control Software ...................................................... 52
ADC Interrupt Service Routine ......................... 53
Fault Loop......................................................... 53
Idle Loop (Normal Operation) ........................... 53
Initialization Routine.......................................... 53
Peripheral Enable Routine................................ 53
PFC Boost Converter........................................ 54
Secondary Side (DC_DC)................................. 61
Customer Notification Service.................................... 5
Customer Support...................................................... 5
D
Documentation
Conventions........................................................ 3
Layout................................................................. 1
F
Flyback Converter.................................................... 20
Full-Bridge Converter............................................... 13
Full-Bridge ZVT Converter....................................... 30
I
Input and Output Electrical Specifications................ 68
Input and Output Specifications ................................. 7
Internet Address......................................................... 4
M
Microchip Internet Web Site....................................... 4
Multi-Phase Synchronous Buck Converter .............. 19
O
Output Performance Testing.................................... 73
P
PCB Layout
Power Board ..................................................... 75
Signal Board ..................................................... 76
PFC Boost Converter......................................... 21
, 25
Power Factor (PF)...................................................... 9
Power Factor Correction (PFC).................................. 8
R
Reactive Power .......................................................... 9
Reading, Recommended ........................................... 4
Recommended Test Equipment............................... 67
Resources Required for Digital PFC ........................ 21
Resources Required for Digital Phase-Shift ZVT Con-
verter .................................................................... 22
Resources Required for Synchronous
Buck Converters ................................................... 24
S
Safety Isolation Information...................................... 68
Schematics
Power Board (Sheet 1 of 8) .............................. 77
Power Board (Sheet 2 of 8) .............................. 78
Power Board (Sheet 3 of 8) .............................. 79
Power Board (Sheet 4 of 8) .............................. 80
Power Board (Sheet 5 of 8) .............................. 81
Power Board (Sheet 6 of 8) .............................. 82
Power Board (Sheet 7 of 8) .............................. 83
Power Board (Sheet 8 of 8) .............................. 84
Signal Board (Sheet 1 of 7)............................... 85
Signal Board (Sheet 2 of 7)............................... 86
Signal Board (Sheet 3 of 7)............................... 87
Signal Board (Sheet 4 of 7)............................... 88
Signal Board (Sheet 5 of 7)............................... 89
Signal Board (Sheet 6 of 7)............................... 90
Signal Board (Sheet 7 of 7)............................... 91
Single-Phase Synchronous Buck Converter............ 41
Synchronous Buck Converters................................. 23
Synchronous Rectifier Design.................................. 37
System Connections ................................................ 70
Input.................................................................. 70
Output ............................................................... 70
Programming .................................................... 71
System Evaluation and Testing................................ 72
System Power-Up .................................................... 72