Power Management for Embedded Systems

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Transcript Power Management for Embedded Systems

Power Management for
Embedded Systems
Power requirement for Embedded
Micro Systems
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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 )
076V
074V
072V
070V
068V
066V
064V
062V
060V
058V
0µs
10µs
20µs
30µs
40µs
50µs
60µs
70µs
V (4 )
4dB
80µs
90µs
100µs
0°
8dB
-1 0 °
2dB
-2 0 °
-3 0 °
6dB
-4 0 °
0dB
-5 0 °
6dB
-6 0 °
2dB
-7 0 °
8dB
-8 0 °
4dB
-9 0 °
0dB
-1 0 0 °
6dB
-1 1 0 °
2dB
10H z
100H z
1K H z
10K H z
-1 2 0 °
100K H z