CHL8318_15 Datasheet, PDF (2/4 Pages) International Rectifier – DIGITAL MULTI-PHASE BUCK CONTROLLER

FUNCTIONAL BLOCK DIAGRAM
PRODUCT BRIEF
CHL8318
DIGITAL MULTI-PHASE BUCK CONTROLLER
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VCPU
VRTN
ISEN1
IRTN1
ISEN2
IRTN2
ISEN3
IRTN3
ISEN4
IRTN4
ISEN5
IRTN5
ISEN6
IRTN6
ISEN7
IRTN7
ISEN8
IRTN8
RCSP
RCSM
TSEN1
TSEN2
TSEN3
VINSEN
EN
SADDR/
GAMER_OFF
PSI
SDA
SCL
VID decode
and DAC
RRES
V18A
3.3V
Reference
1.8V
LDO
Vref
OVP
Σ
Voltage
Error
ADC
Digital Processor
PID +
Controller
Transient
Controller
PWM
Generator
Channel Current Sense
Current
Balance
SMBus
Interface
Monitor
ADC
OVP
Oscillator, NVM
State Control, and
Monitoring
Current
Monitor
SALERT
VRHOT VR_Ready
GND
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
PWM7
PWM8
VAR_GATE
IMON
Figure 2. Functional Block Diagram
Page 2 of 4
PB0006
Rev. 1.00, October 26, 2009