POWER MANAGEMENT CIRCUITS

-SHIFA JINDAL-CHANDRANI GHOSH

-NIKHIL GOYAL

FINAL YEAR PROJECT

Inefficiency .

No circuitry involved to minimize losses.

Regulation of output voltages is improper.

Major Disadvantages of the Traditional PS System

Power management broadly refers to the generation and control of regulated voltages required to operate an electronic system.

It helps to scale down the voltage at the level of about 1.1V required by the processors.

IC components such as linear regulators, switching regulators, switched capacitor voltage converters, voltage references are basic elements of power management.

Power management

BLOCK DIAGRAM OF POWER MANAGEMENT

Clean vs. noisy supply Clean DC vs. rectified DC Regulated vs. Unregulated Supply impedance improvement Efficiency maximize

WHY POWER MANAGEMENT ?

COMPANIES INVOLVED IN POWER MANAGEMENT

AC – AC ( TRANSFORMER ) AC – DC ( RECTIFIER ) DC – AC ( HOME INVERTERS ) DC – DC ( CELL PHONES )

BATTERY MANAGEMENT ( BATTERY CHARGERS )

AREAS OF POWER MANAGEMENT

Takes one level of DC voltage and converts it to another level.

Output voltage level can be higher, lower or negative compared to the input level.

Voltage Regulation is done by closed loop mechanism.

Closed loop control is used for stable operation to obtain output voltage within the band of tolerance.

DC to DC CONVERTER

Resistor Divider. LDO – Low drop out regulators. Switching Converters : a) Buck Converter b) Boost Converter c) Inverting Boost Converter d) Buck – Boost Converter e) Charge Pumps

TYPES OF DC – DC CONVERTERS

Hardware implementation of energy efficient DC–DC converter to increase the life time of cell phone battery.

Circuit implementation will depend upon several specifications. These are as follows :

a) Input and output voltage range. b) Conversion ratio range. c) Efficiency. d) Output voltage ripple.

PLAN OF ACTION

e) Maximum output current. f) Quiescent current.g) Cost of circuit components.h) Better voltage regulation which gives DC

gain.

CONTINUE…

In this presentation we gave the outline of our final year project on the topic of power management circuits.

It includes introduction to the power management, it’s area of operation, present market value and several application of it.

Also reveals the aim of the hardware implementation with several specifications to be considered during circuit implementation.

CONCLUSION

THANK YOU