RT8869A Datasheet, PDF (12/19 Pages) Richtek Technology Corporation – Advanced 2/1-Phase PWM Controller for CPU Core Power

RT8869A
Dynamic Output Voltage Control
VOUT
(500mV/Div)
VID5
(2V/Div)
UTATE1
(20V/Div)
VOUT
(100mV/Div)
IOUT
(50A/Div)
UTATE1
(20V/Div)
UTATE2
(20V/Div)
VIN = 12V, IOUT = 0A, VID = 1.2V to 1V
Time (20μs/Div)
UTATE2
(20V/Div)
VOUT
(100mV/Div)
IOUT
(50A/Div)
UTATE1
(20V/Div)
UTATE2
(20V/Div)
VFB
(1V/Div)
EAP
(1V/Div)
UTATE1
(20V/Div)
LTATE2
(20V/Div)
Load Step Down
VIN = 12V, RLL = 1mΩ
Time (10μs/Div)
VFB
(1V/Div)
EAP
(1V/Div)
UTATE1
(20V/Div)
LTATE2
(20V/Div)
UVP
VDAC = 1V, VFB = 1V to 0.5V, IOUT = 0A
Time (400μs/Div)
VOUT
(1V/Div)
IOUT
(50A/Div)
UTATE1
(20V/Div)
LTATE2
(20V/Div)
www.richtek.com
12
Load Step Up
VIN = 12V, RLL = 1mΩ
Time (10μs/Div)
OVP
VDAC = 1V, VFB = 1V to 1.5V, IOUT = 0A
Time (400μs/Div)
OCP
RIMAX = 36kΩ
Time (400μs/Div)
DS8869A-00 May 2011