CHL8228G-00CRT Datasheet, PDF (3/3 Pages) International Rectifier – Digital Multi-Phase Buck Controller

Digital Multi-Phase Buck Controller CHL8225G/8G
FUNCTIONAL BLOCK DIAGRAM
RCSP_L2
RSCM_L2
VSEN_L2
VRTN_L2
RCSP
RSCM
VSEN
VRTN
AFE_2
VID_2
AFE_1
ITOT_2
Voltage
ADC
VID_1
V18A
VCC
1.8V
LDO
Vout1_Error
Vout2_Error
ISEN1
IRT...N1
ISENx
IRTNx
... ^{IP... 1}
IPx
Σ
CHL8225G CHL8228G
x3
4
y4
5
z5
8
ITOT_1
ISENy
IRT...Ny
ISENz
IRTNz
... ^{IP... y}
IPz
IP...1
IP5
ITOT_2
Σ
Current ADC
Control
and
Monitoring
Only for
CHL8228G
IP... 6
IP8
TSEN2
(CHL8228G only)
TSEN
VINSEN
VINSEN_AUX1
VINSEN_AUX2
(CHL8228G only)
EN
VIDSEL1
VIDSEL0
SMB_DIO
SMB_CLK
VIDSEL0_L2
VIDSEL1_L2
Only for
CHL8228G
VRHOT2
EN_L2
V3_3
Monitor ADC
Reference,
Oscillator,
State Control,
Interfaces,
Registers and
NVM
VBOOT VMAX RRES
Mode Control _{PWM Generator}
Phase_
Period_1
Phase_
Period_2
Iout
Vin
Vout
Temp
Fault Bus
System Clock
System Clock
ADC Clocks
MUX Clocks
Phase_Period_1
Phase_Period_2
VID_1
VID_2
Iout
Vin
Temp
Fault Bus
Only for CHL8228G
Figure 5: CHL8225G & CHL8228G Functional Block Diagram
3 June 21, 2013 | FINAL | V1.12
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
PWM7
Only for
CHL8228G
PWM8
VAR_GATE
VRHOT_ICRIT#
VR_READY_L1
VR_READY_L2