XRP7713
Three Channel Digital PWM Step Down Controller
BLOCK DIAGRAM
Channel 1
VOUT1
Feedback
ADC1/2
PreScaler
Vtar
DAC
SS & PD
Digital
PID
Hybrid
DPWM
Delay
Gate
Driver
BST1
GH1
LX1
GL1
PGND1
Isense1
Channel 2
VOUT2
Feedback
ADC1/2
PreScaler
Vtar
DAC
SS & PD
Digital
PID
BST2
–
6
GH2
LX2
Gate
Driver
Hybrid
DPWM
Dead
Time
GL2
PGND2
Isense2
VOUT3
Channel 3
Isense1
VCCD
VCC
VDD
GPIO 0-3
LDO
VREF
Fault
Handling
PWR
Good
Current
ADC1/2
11-CH
MUX
Isense2
Isense3
Vout1
GPIO
OSC
CLOCK
Vout2
Vout3
Vtj
SDA,SCL
I2C
OTP
Configuration
Registers
UVLO
VIN
STBY LR
LDOOUT
Fig. 2: XRP7713 Block Diagram
© 2010 Exar Corporation
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Rev. 1.1.1