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RT3624LE Datasheet(PDF) 45 Page - Richtek Technology Corporation

Part # RT3624LE
Description  Dual Channel PWM Controller for IMVP9.1 CPU Core Power Supply
PDF  48 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT3624LE Datasheet(HTML) 45 Page - Richtek Technology Corporation

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RT3624LE
Copyright © 2022 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation
DS3624LE-00
April
2022
www.richtek.com
45
OVP Threshold
350mV
VSEN
VR_READY
VID Down (Slow Slew rate)
Indicator
60
μs
PWM
0V
Figure 24. Over-Voltage Protection Mechanism
Under-Voltage Protection
When the output voltage is lower than VID-650mV with
3
µs filter time, UVP is triggered and all PWMs are in
tri-state to turn off high-side and low-side power
MOSFETs. UVP is masked during DVID period and
80
µs after VID settles. The mechanism is illustrated in
Figure 25.
VID
650mV
VSEN
UVP Threshold
PWM
VR_READY
Figure 25. Under-Voltage Mechanism
All protections are reset only by VCC/VRON toggle.
UVP and OCP protections are listed in Table 18. Note
that the real filter time also depends on the magnitude
of detected signal. The signal magnitude affects analog
comparator’s overdrive voltage and output slew rate.
The RT3624LE provides protection flag to promptly
determine which kind of protections is triggered. As
protection happens, VREF is forced to be 1V/1.5V/2V
for OVP/UVP/SUM_OCP, respectively.



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