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RT9245BPC Datasheet(PDF) 9 Page - Richtek Technology Corporation

Part # RT9245BPC
Description  Multi-Phase PWM Controller for K8 CPU Core Power Supply
PDF  23 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9245BPC Datasheet(HTML) 9 Page - Richtek Technology Corporation

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RT9245B
9
DS9245B-02
March 2007
www.richtek.com
Typical Operating Characteristics
CH1:(5V/Div)
CH2:(5V/Div)
Relationship Between Inductor
Current and VADJ
Time (25ms/Div)
VSS
PWM
VADJ
IL
CH3:(50mV/Div)
CH4:(20A/Div)
CH3:(10V/Div)
CH4:(1V/Div)
Power-Off @ IOUT = 60A
Time (10
µs/Div)
VCOMP
PWM
UGATE
LGATE
CH1:(5V/Div)
CH2:(20V/Div)
Adjustable Frequency
0
100
200
300
400
500
600
700
0
10
20
30
40
50
60
70
RRT (kW)
(k
Ω)
PWM vs. VCOMP
0
10
20
30
40
50
60
70
0.5
1
1.5
2
2.5
3
3.5
VCOMP (V)
RRT = 16k
Ω
Power-On @ IOUT = 60A
Time (10ms/Div)
UGATE
LGATE
VSS
PWM
CH3:(20V/Div)
CH4:(10V/Div)
CH1:(5V/Div)
CH2:(5V/Div)
Ripple
Time (2.5
µs/Div)
(5mV/Div)
VCORE
L = 0.3
µH, C = 5600µF



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