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Power Supply Design

 Dr. Hong Ma, Biomedical Devices Design Laboratory
  28th-Nov-2008
Description: Ideal voltage sources do not exist! Voltage regulators –use feedback to reduce source impedance Trends in Power Supply Design Problems associated with power supplies: “Wall-warts” Batteries USB Ports Linear Voltage Regulators Drop Out Voltage in Linear Regulators LDO: Low Dropout Regulator Switching Regulators Step-Down (Buck) Converter Layout for Switching Regulators Inductorless DC/DC: Charge Pumps Reverse Battery Protection Latch-up.
Views: 2111
Domain: Energy
Category: Battery & Fuel Cell
Contents:
2.996/6.971 Biomedical Devices Design Laboratory

Lecture 4: Power Supplies
Instructor: Dr. Hong Ma Sept. 19, 2007

Key Problem

� Ideal voltage sources do not exist! � Voltage regulators � use feedback to reduce source impedance

Trends in Power Supply Design
Multiple Devices - One Power Supply
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VREG Battery Device1 Device2

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Device3

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