Title: Switch mode Power Supply
1Switch Mode Power Supply
2Power Supply-
- Any device that supplies electric power to an
electric load. - The different types of power supplies include
- Battery
- DC power supply
- AC power supply
3Switched Mode Power Supply
- An electrical power supply that incorporates a
switching regulator to convert electrical power
efficiently.
4Advantages of SMPS over Linear Power Supplies
- 1. Lower weight
- 2. Smaller size
- 3. Higher efficiency
- 4. Lower power dissipation
Disadvantages of SMPS
1. Complexity of the circuit
5- 1. Inverter stage
- The inverter stage converts DC, whether directly
from the input or from the rectifier stage
described above, to AC by running it through a
power oscillator, whose output transformer is
very small with few windings at a frequency of
tens or hundreds of kilohertz. - 2. Output transformer
- If the output required is to be isolated from
input, the inverted AC is used to draw the
primary windings of a high frequency transformer.
This converts the voltage up or down to the
required output level on its secondary winding.
6Use of various transformer isolated topologies
7Applications of SMPS-
- 1. Machine tool industries
- 2. Security Systems
- (Closed circuit cameras)
- 3. Support supplies with PLCs
- 4. Personal Computers
8Conclusion
- The most common SMPS topologies flyback,
push-pull, half bridge and full bridge converters
have been outlined. - Each has its own particular operating
characteristics and advantages, which makes it
suitable to particular applications. - Some of the most common applications of SMPS have
been discussed.
9 Keen Ocean Industrial Ltd. Keen Ocean
Industrial Ltd. Flat 3405, 34/F., Cable TV
Tower, 9 Hoi Shing Road, Tsuen Wan, N.T., Hong
Kong. 5, www.keenoceanhk.com 34/F., Cable TV
Tower, 9, Tsuen Wan, N.T., Hong Kong.
email sales_at_keenocean.com.hk Website
10Thank you!!