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RT8868A 데이터 시트보기 (PDF) - Richtek Technology
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RT8868A
4/3/2/1-Phase PWM Controller for AMD AM2/AM2+/AM3 CPUs
Richtek Technology
RT8868A Datasheet PDF : 21 Pages
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RT8868A
Function Block Diagram
RT
COMP
FB
OFS
Modulator
Waveform
Generator
RAMP_NB
-
+
EA
Offset
+
OV
-
+
1.8V
Transient
Response
Enhancement
PGOOD
PWROK
EN
OV
OC
VIDOFF
POR
+
-
+
1.25V
Soft Start
and
Fault
Logic
VID5 to VID0
FBRTN
FBRTN_NB
ADJ
IMAX
VID
Table
-
Generator
OC
Detection
OC
IMAX_NB
OC_NB
Detection
OC_NB
POR
Power-On
Reset
+
-
+
-
+
-
+
-
-
-
AVG
-
-
COMP_NB
FB_NB
Transient
Response
Enhancement
+
-
+
-
EA
+
+
RAMP_NB
-
OV_NB
1.8V
5V
Regulator
MOSFET
Driver
VCC12
VCC5
BOOT1
UGATE1
PHASE1
LGATE1
MOSFET
Driver
CH3_EN
Detector
CH4_EN
Detector
I_SEN1
CH1
Current
SENSE
I_SEN2
CH2
Current
SENSE
CH3
I_SEN3
Current
SENSE
I_SEN4
CH4
Current
SENSE
I_SENNB
NB
Current
SENSE
MOSFET
Driver
BOOT2
UGATE2
PHASE2
LGATE2
PWM3
PWM4
PS
ISP1
ISN1
ISP2
ISN2
ISP3
ISN3
ISP4
ISN4
ISP_NB
ISN_NB
VCC12_NB
BOOT_NB
UGATE_NB
PHASE_NB
LGATE_NB
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
is a registered trademark of Richtek Technology Corporation.
DS8868A-00 May 2012
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