RT8889D Datasheet, PDF (20/44 Pages) Richtek Technology Corporation – 3-Phase PWM Controller

RT8889D
CORE VR Dynamic VID Up
CORE VR Dynamic VID Down
VCORE
(1V/Div)
VCLK
(2V/Div)
VDIO
(2V/Div)
ALERT
(2V/Div)
VIN = 12V, VID = 1.6V to 1.85V, Slew Rate = Fast
Time (10μs/Div)
VCORE
(1V/Div)
VCLK
(2V/Div)
VDIO
(2V/Div)
ALERT
(2V/Div)
VIN = 12V, VID = 1.85V to 1.6V, Slew Rate = Fast
Time (10μs/Div)
VCORE
(50mV/Div)
VCLK
(1V/Div)
UGATE1
(20V/Div)
LGATE1
(10V/Div)
CORE VR Mode Transient
VIN = 12V, VID = 1.7V, PS0 to PS2, ILOAD = 0.6A
Time (100μs/Div)
VCORE
(50mV/Div)
VCLK
(1V/Div)
UGATE1
(20V/Div)
LGATE1
(10V/Div)
CORE VR Mode Transient
VIN = 12V, VID = 1.7V, PS2 to PS0, ILOAD = 0.6A
Time (100μs/Div)
CORE VR Thermal Monitoring
TSEN
(1V/Div)
VR_HOT
(1V/Div)
VIN = 12V, TSEN Sweep from 1.7V to 2.1V
Time (10ms/Div)
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
www.richtek.com
20
V_IMON vs. Load Current
2.5
2.0
1.5
1.0
0.5
0.0
0
25
50
75
100
125
Load Current (A)
is a registered trademark of Richtek Technology Corporation.
DS8889D-00 April 2015