LT8312
Typical applicaTion
Universal Input 200W PFC Boost Converter
D4
V
400V
0.5A
OUT
4:1
•
D2
20Ω
560µF
×2
90V
TO 265V
AC
0.1µF
499k 100k
•
10µF
4.7pF
2k
499k 100k
D3
1M
1M
V
DCM
FB
IN
1M
V
IN_SENSE
EN/UVLO
9.53k
95.3k
LT8312
20Ω
GATE
V
SENSE
REF
INTV
CC
100k
221k
4.7µF
0.01Ω
GND
2.2µF
OVP
V
C
8312 TA04
relaTeD parTs
PART NUMBER DESCRIPTION
COMMENTS
and V Limited Only By External Components
OUT
LT3798
Off-Line Isolated No Opto Flyback Controller with Active PFC
V
IN
LT3752/
LT3752-1
Active Clamp Synchronous Forward Controllers with Internal Input Voltage Range: LT3752: 6.5V to 100V, LT3752-1: Limited Only By
Housekeeping Controller
Eternal Components
LT3753
LT8311
Active Clamp Synchronous Forward Controller
Input Voltage Range: 8.5V to 100V
Synchronous Rectifier Controller with Opto-Coupler Driver
for Forward Converters
Optimized for Use with Primary-Side LT3752/LT3752-1, LT3753 and
LT8310 Controllers
LT3748
100V Isolated Flyback Controller
5V ≤ V ≤ 100V, No Opto Flyback, MSOP-16 with High Voltage Spacing
IN
LTC®3765/
LTC3766
Synchronous No Opto Forward Controller Chip Set with
Active Clamp Reset
Direct Flux Limit, Supports Self Starting Secondary Forward Control
LTC3723-1/
LTC3723-2
Synchronous Push-Pull and Full-Bridge Controllers
High Efficiency with On-Chip MOSFET Drivers, Adjustable Synchronous
Rectification Timing
LTC3722/
LTC3722-2
Synchronous Full Bridge Controllers
Adaptive or Manual Delay Control for Zero Voltage Switching, Adjustable
Synchronous Rectification Timing
8312fa
LT 0216 REV A • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
14
For more information www.linear.com/LT8312
●
●
LINEAR TECHNOLOGY CORPORATION 2015
(408)432-1900 FAX: (408) 434-0507 www.linear.com/LT8312