Transcription of CHAPTER 9: POWER MANAGEMENT - Analog Devices
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CHAPTER 9: POWER MANAGEMENT - Analog Devices
POWER MANAGEMENT CHAPTER 9: POWER MANAGEMENT INTRODUCTION SECTION : LINEAR VOLTAGE REGULATORS LINEAR REGULATOR BASICS PASS Devices AND THEIR ASSOCIATED TRADE-OFFS LOW DROPOUT REGULATOR ARCHITECTURES THE anyCAP LOW DROPOUT REGULATOR FAMILY design FEATURES RELATED TO DC PERFORMANCE design FEATURES RELATED TO AC PERFORMANCE THE anyCAP POLE-SPLITTING TOPOLOGY LDO REGULATOR THERMAL CONSIDERATIONS REGULATOR CONTROLLER DIFFERENCES A BASIC 5 V/1 A LDO REGULATOR CONTROLLER SELECTING THE PASS DEVICE THERMAL design SENSING RESISTORS FOR LDO CONTROLLERS PCB LAYOUT ISSUES REFERENCES SECTION.
BASIC LINEAR DESIGN 9.4 Figure 9.1 also allows a more detailed analysis of power losses in the regulator. There are two components to power which are dissipated in the regulator, one a function of VIN – VOUT and IL, plus a second which is a function of VIN and Iground. If we call the total power PD, this then becomes:
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