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RT9241APS датащи(PDF) 13 Page - Richtek Technology Corporation

номер детали RT9241APS
подробное описание детали  Two-Phase DC/DC Controller for CPU Core Power Supply
PDF  17 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9241APS датащи(HTML) 13 Page - Richtek Technology Corporation

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RT9241A/B
13
DS9241AB-05
March 2007
www.richtek.com
Two-Phase Converter and Components Function Grouping
Design Procedure Suggestion
Voltage loop setting
a.Output filter pole and zero (Inductor, output capacitor
value & ESR)
b.Error amplifier compensation network
Current loop setting
a.Over current protection trip point setting by GM amplifier
S/H current(current sense component Ron, ISPx &
ISNx pin external resistor value, keep ISPx current =
75
μA at OCP condition)
VRM load line setting
a.Droop amplitude (ADJ pin resistor)
b.No load offset (additional resistor in compensation
network)
Power sequence & SS
DVD pin external resistor and SS pin capacitor
PCB layout
a.Kelvin sense for current sense GM amplifier input
b.Refer to layout guide for other item
VDD
PWM1
ISP1
RT9241A/B
COMP
FB
ADJ
ISN1
PWM2
ISP2
GND
VSEN
DVD
ISN2
SS
12V
VCC
PVCC
PWM
GND
BOOT
UGATE
PHASE
LGATE
RT9600
+V
CORE
+5V
VCC
PVCC
PWM
GND
BOOT
UGATE
PHASE
LGATE
RT9600
12V
12V
VID
Current Sense
Components
Compensation
& Offset
Droop Setting
Driver Power
UVLO



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