MAX8751 Maxim Integrated Products, MAX8751 Datasheet - Page 13

• Manufacturer Part Number: MAX8751
• Description: Full-Bridge CCFL Inverter Controller
• Manufacturer: Maxim Integrated Products

Figure 2. Functional Diagram
DPWM
COMP
CNTL
GND
ISEC
TFLT
V
VFB
SEL
IFB
CC
IN
F.W. RECT
2.25V
OVERVOLTAGE
COMPARATOR
780mV
1.22V
SECONDARY OVERCURRENT
______________________________________________________________________________________
CURRENT
OVER-
DIMMING CONTROL
100µA
COMPARATOR
COMPARATOR
OPEN-LAMP
LOGIC
790mV
CURRENT
OVER-
1200µA
REGULATOR
LINEAR
Fixed-Frequency, Full-Bridge CCFL
AMPLIFIER
ERROR
RAMP
FAULT-DELAY
BLOCK
COMPARATOR
PWM
SHDN
UVLO
4.2V
SUPPLY
COMPARATOR
BIAS
UVLO
RESET
EN
PWM CONTROL
OVERCURRENT
CROSSING
AND ZERO
PRIMARY
LOGIC
R
S
LATCH
FAULT
Q
FLT
Inverter Controller
CONTROL
MACHINE
DRIVER
STATE
GATE
MUX
FLT
UVLO
MAX8751
VCC
PLL AND
SELECT
PHASE
DPWM
HIGH-
FREQ
OSC
OSC
SHDN
PS1
PS2
PSCK
HSYNC
HFCK
HF
LSYNC
LFCK
LF
PCOMP
BST1
GH1
LX1
BST2
GH2
GL1
PGND1
GL2
PGND2
LX2
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