LTC3722-2 Linear Technology, LTC3722-2 Datasheet - Page 8

• Manufacturer Part Number: LTC3722-2
• Description: Synchronous Dual Mode Phase Modulated Full Bridge Controllers
• Manufacturer: Linear Technology

BLOCK DIAGRA S
COMP
LTC3722-1/LTC3722-2
8
R
SS
CS
FB
LEB
6
1.2V
4
7
3
5
+
–
10.25V = ON
–
+
650mV
V
BLANK
6V = OFF
270mV
650mV
CC
V
18
UVLO
CC
AMPLIFIER
ERROR
+
–
+
–
M1
SHUTDOWN
CURRENT
LIMIT
5V
UVLO
12 A
50k
14.9k
12
R1
PULSE BY PULSE
R2
M2
CURRENT LIMIT
–
V
+
W
REF
SYSTEM
UVLO
COMPENSATION
–
+
REF AND LDO
REF GOOD
QB
Q
MODULATOR
SLOPE
FAULT
LOGIC
GOOD
V
1.2V
C
V
PHASE
14
5V
T
REF
CC
/R
LTC3722-1 Current Mode SYNC Phase Shift PWM
R
S
1 = ENABLE
0 = DISABLE
GND
OSC
C
24
23
T
T
S
R
SYNC
QB
QB
1
Q
SPRG
13
DPRG
2
SBUS
10
RECTIFIER
PASSIVE
ACTIVE
DELAY
DELAY
DRIVE
LOGIC
SYNC
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3722 • BD01
372212i
OUTD
PGND
OUTE
OUTF
OUTC
ADLY
PDLY
OUTA
OUTB
21
20
16
15
19
17
11
22
9