RT8801 Просмотр технического описания (PDF) - Richtek Technology

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производитель

RT8801

Multi-Phase PWM Controller for CPU Core Power Supply with Serial Programming Interface

Richtek Technology 

Preliminary

RT8801

Typical Operating Characteristics

450

400

350

300

250

200

150

100

50

0

0

Adjustable Frequency

20

40

60

80

100 120

RRT (kΩ))

VCORE

Load Transient Response

3

2.8

2.6

2.4

2.2

2

1.8

1.6

1.4

1.2

1

0

Linearity of each PWM

PWM2

PWM3

PWM1

PWM4

fOSC = 200k

500 1000 1500 2000 2500 3000 3500

Pulse Width (ns)

VCORE

Load Transient Response

Phase

IOUT

VADJ

PWM

UGATE

LGATE

VCOMP

CH1: (500mV/Div)

CH2: (10V/Div)

CH3: (50A/Div)

CH4: (100mV/Div)

Time (5μs/Div)

Power-Off @ IOUT = 60A

CH1:(5V/Div)

CH2:(20V/Div)

CH3:(10V/Div)

CH4:(1V/Div)

Time (10μs/Div)

Phase1

Phase2

Phase3

CH1: (500mV/Div), CH2: (10V/Div)

CH3: (10V/Div), CH4: (10V/Div)

Time (5μs/Div)

VSS

PWM

Power-On @ IOUT = 60A

CH1:(5V/Div)

CH2:(5V/Div)

UGATE

LGATE

CH3:(20V/Div)

CH4:(10V/Div)

Time (10ms/Div)

DS8801-04 August 2007

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www.richtek.com

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