User manual

ZCD
GATE
LM3450A
V
CC
GND
COMP
FB
HOLD
V
AC
V
ADJ
CS
DIM
FLT2
FLT1
I
SEN
PWM
V
REF
BIAS
IADJ
EN
CSN
LM3409HV
UVLO
VCC
COFF
GND
CSP
PGATE
DAP
VIN
V
OUT
PWM
V
OP1
V
OP2
RETURN
RETURN
V
LED
LMV431
OPTO1
OPTO2
V
OP2
V
OP1
V
POP2
V
OUT
EMI
FILTER
CONTROL
FEEDBACK
SECONDARY
LED DRIVER
DIMMING
VREF
+
-
AC
MAINS
LED
LOAD
Q1
Q3
D10
D23
D8
D9
D4
C8
C9
C30
C7
C1
C2
C3
C66
C26
C11
C13
C4
C5
D5
D1
C42
C44
D16
C43
C17
C18
C24
C23
D17
C22
L1
L2
T1
R8
R9
R56
R2
R3
R47
D6
R5
R7
R17
R23
R24
R25
R26
R29
R32
R38
R30
R31
R34
R36
R70
R77
R72
R81
R16
R71
R84
R65
R66
R83
R58
R1
C35
C34
C38
C36
C39
C37
C47
D15
D13
D14
D22
D11D12
Q7
L3
Q6
Q2
R57
HOLD
V
LED
R39
D7
D2
D3
U9
U8
U10
U1
U11
V
POP2
V
CC
R18
Q8
D18
C21
C46
L4
V
CC
V
ADJ
COMPBIAS
D21
D24
R20
Q4
R21
SOFTSTART
C12
D20
THERMAL
PROTECT
R10
R12
R14
R15
AUX
R6
AUX
R11
www.ti.com Simplified Evaluation Board Schematic
8 Simplified Evaluation Board Schematic
Figure 10. Simplified Evaluation Board Schematic
7
SNVA485B–June 2011–Revised May 2013 AN-2150 LM3450A Evaluation Board
Submit Documentation Feedback
Copyright © 2011–2013, Texas Instruments Incorporated