XRP7714_11 Datasheet, PDF (5/29 Pages) Exar Corporation – Quad Channel Digital PWM Step Down Controller

BLOCK DIAGRAM
VOUT1
PreScaler
Vtar
DAC
XRP7714
Quad Channel Digital PWM Step Down Controller
Feedback
ADC1/2
Channel 1
Digital
PID
Hybrid
DPWM
SS & PD
Isense1
Delay
Gate
Driver
BST1
GH1
LX1
GL1
PGND1
VOUT2
PreScaler
Vtar
DAC
Feedback
ADC1/2
Channel 2
–
Digital
PID
Hybrid
DPWM
SS & PD
Isense2
6
Dead
Time
Gate
Driver
BST2
GH2
LX2
GL2
PGND2
VOUT3
VOUT4
VCC
VDD
GPIO 0-3
SDA,SCL
LDO
GPIO
I2C
Channel 3
VCCD
Channel 4
VREF
OSC
OTP
Fault
Handling
CLOCK
PWR
Good
Current
ADC1/2
UVLO
Configuration
Registers
11-CH
MUX
Isense1
Isense2
Isense3
Isense4
Vout1
Vout2
Vout3
Vout4
Vtj
VIN2
VIN1
STBY LR
LDOOUT
Fig. 2: XRP7714 Block Diagram
© 2011 Exar Corporation
5/29
Rev. 1.1.6