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RT3612EB bảng dữ liệu(PDF) 32 Page - Richtek Technology Corporation

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Giải thích chi tiết về linh kiện  2-Phase PWM Controller with Dual Integrated Drivers for IMVP9 CPU Core Power Supply
PDF  47 Pages
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nhà sản xuất  RICHTEK [Richtek Technology Corporation]
Trang chủ  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT3612EB bảng dữ liệu(HTML) 32 Page - Richtek Technology Corporation

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RT3612EB
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DS3612EB-02 December 2019
www.richtek.com
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Copyright 2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Dual Ramp Mechanism
Normal controllers easily suffer jitter and stability issues
under low equivalent series resistance (ESR) of capacitor
application and large loop delay condition. The large Loop
delay often comes from PCB parasitic inductance. Figure
17 illustrates how PCB parasitic inductance impact the
load transient response. The PCB parasitic inductance
delays energy delivering and causes VSEN to keep falling.
The dropping VSEN induces several successive PWM
pulses and then VSEN ring-back occurs. While load
current release at the ring back region, it will generate
large overshoot. Thus more capacitors will use for the
overshoot reduction.
Figure 17. Load Transient Response with PCB Parasitic Inductance
Loading Current
ΔIcc
VSEN
PH1
PH2



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