鈥?/div>
High frequency operation; oscillator frequency = 2 MHz max.
Full-bridge phase-shift switching circuit with adjustable delay times
Integrated secondary synchronous rectification control with adjustable delay times
Three-level over current protection; pulse by pulse, timer Latch, one shot OCP
Package: TSSOP-20
Application
鈥?/div>
48 V input isolated DC/DC converter
鈥?/div>
Primary; Full-bridge circuit topology
鈥?/div>
Secondary; current doubler or center-tapped rectification
Illustrative Circuit
+48V
+
鈥?/div>
FET Driver
Vbias
FET
Driver
FET
Driver
FET
Driver
FET
Driver
FET Driver
VCC
OUT
-A
OUT
-B
CS
RAMP
OUT
-C
OUT
-D
OUT
-E
OUT
-F
Optical feedback circuitry
COMP
VREF
FB
DELAY DELAY DELAY
-1
-2
-3
GND
RT
SYNC
SS
REMOTE
Rev.5.0, Mar.15.2004, page 1 of 29
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