RT8885A
CORE VR Thermal Monitoring
TSEN
(100mV/Div)
VRHOT
(500mV/Div)
TSEN Sweep from 1.7V to 1.9V
Time (10ms/Div)
GFX VR Power On form EN
CORE VR Reference Voltage vs. Temperature
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
-50
VID = 1V
-25
0
25 50 75 100 125
Temperature (°C)
GFX VR Power Off form EN
VGFX
(500mV/Div)
EN
(2V/Div)
VRA_READY
(2V/Div)
UGATE1
(20V/Div)
VGFX
(1V/Div)
ILOAD
(138A/Div)
VRA_READY
(1V/Div)
UGATE1
(50V/Div)
Boot VID = 1V
Time (200μs/Div)
VGFX
(500mV/Div)
EN
(2V/Div)
VRA_READY
(2V/Div)
UGATE1
(20V/Div)
GFX VR OCP
VGFX
(1V/Div)
VID = 1.1V, ILOAD(MAX) = 55A
Time (100μs/Div)
VRA_READY
(1V/Div)
UGATE1
(50V/Div)
LGATE1
(10V/Div)
Boot VID = 1V
Time (200μs/Div)
GFX VR OVP and NVP
Time (40μs/Div)
VID = 1.1V
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
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34
is a registered trademark of Richtek Technology Corporation.
DS8885A-01 January 2014