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RT8152C Datasheet(PDF) 19 Page - Richtek Technology Corporation

Part # RT8152C
Description  Single-Phase PWM Controller for CPU / GPU Core Power Supply
PDF  24 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8152C Datasheet(HTML) 19 Page - Richtek Technology Corporation

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RT8152C/D
19
DS8152C/D-04
April 2011
www.richtek.com
Figure 8. CPU Mode Timing Diagram for Power-Up and Power-Down
After the RT8152C/D enters Render mode, VSEN starts ramping up to VDAC within 1ms. The slew rate during power-up
is 20
μA/CSOFT. PGOOD is asserted HIGH after VSEN exceeds VDAC − 100mV for 4.77ms (typ.). DPRSLPVR are valid
right after PGOOD is asserted. UVP is masked as long as VSEN is less than VDAC
− 100mV.
Figure 9. Render Mode Timing Diagram for Power-Up and Power-Down
VRON
VCC
4.3V
4.1V
VID
Valid
xx
XX
VSEN
PGOOD
4.77ms typ.
POR
0.2V
VDAC
VDAC-100mV
DPRSLPVR
Valid
XX
XX
PWM
DPRSLPVR Defined
CCM
Pull Down
CCM
Hi-Z
VRON
VCC 4.3V
4.1V
VID
Valid
xx
XX
VSEN
PGOOD
73µs typ.
4.7ms typ.
POR
0.2V
VBOOT
VBOOT - 0.1V
DPRSLPVR
Valid
XX
XX
PWM
DPRSLPVR Defined
CCM
Pull Down
CCM
Hi-Z
CLKEN



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