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Power Management for Embedded Systems Power requirement for Embedded Micro Systems • • • • Multiple supply voltages Small size in all components, L R C etc High Efficiency Intel sets power requirements for Intel Processors such as IMVP6; IMVP6.5 How to reduce the size of inductors, capacitors, resistors and MOSFET drives? IMVP6 An example of Power Supply for Embedded Platform Texas Instruments Power in PDA IPhone, Palm, etc Switching Mode Power Supply Block Diagram of SMPS Devices Available to Build SMPS and Operational Amplifiers A Simple DC-DC Converter Dissipative Realization Duty Cycle changes dc voltage Removal of Switching Harmonics Regulation of Output Voltage Boost Converter Boost Converter Example Boost Converter Analysis Closed Loop converter system Current Programmed Mode Buck Converter CPM Buck Converter Example V(4) 8.076V 8.074V 8.072V 8.070V 8.068V 8.066V 8.064V 8.062V 8.060V 8.058V 0µs 10µs 20µs 30µs 40µs 50µs 60µs 70µs 80µs V(4) 24dB 90µs 100µs 0° 18dB -10° 12dB -20° -30° 6dB -40° 0dB -50° -6dB -60° -12dB -70° -18dB -80° -24dB -90° -30dB -100° -36dB -110° -42dB 10Hz 100Hz 1KHz 10KHz -120° 100KHz