RT9245A View Datasheet(PDF) - Richtek Technology

Part Name

Description

Manufacturer

RT9245A

Multi-Phase PWM Controller for CPU Core Power Supply

Richtek Technology 

PGOOD

V(SS)

VOUT

RT9245A

EA Rising Slew Rate

VFB

OV

Figure 23. Waveform for OV

Error Amplifier Characteristic

For fast response of converter to meet stringent output

current transient response, RT9245A provides large slew

rate capability and high gain-bandwidth performance.

EA Falling Slew Rate

VFB

VCOMP

CH1:(500mV/Div)

CH2:(2V/Div)

Time (250ns/Div)

Figure 25. EA Falling Transient with 10pF Loading;

Slew Rate = 8V/us

4.7k

B 4.7k

-

EA

A

+

VDAC

Figure 26. Gain-Bandwidth Measurement by signal A

divided by signal B

VCOMP CH1:(500mV/Div)

CH2:(2V/Div)

Time (250ns/Div)

Figure 24. EA Rising Transient with 10pF Loading; Slew

Rate = 8V/us

DS9245A-05 March 2007

www.richtek.com

19

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