Step Up or Boost Switching Regulator

Step up converter also termed as boost converter. It produces DC output voltage lower than its input voltage. The basic circuit arrangement for step up converter is shown in figure. L₁ is directly connected to the supply, and diode D1 is in series with L₁ and C­₁, The collector of Q1 is connected to the junction of L₁ and C­1(Point A) and its emitter is grounded.

            

Instructions:

1. Attempt the Pre-test
2. Read Theory
3. Simulation
4. Attempt the Post-test

                  

                   

Data Sheets:

1. MC34063A
2. TPS40222
3. LM2596

Step Down or Buck Switching Regulator

What is a Switch Mode Power Supply?

A switching regulator can be thought of as similar to linear regulator but with the series-pass transistor operating as a switch that is either OFF or switched ON (in saturated state). The output voltage from the switch is a pulse waveform which is smoothed into dc voltage by the action of LC filter

Step Down or Buck Switching Regulator

Step down converter also termed as buck converter. It produces DC output voltage lower than its input voltage. The basic circuit arrangement for step down converter is shown in figure 3. The catch diode D1, this normally reverse bias when Q1 is ON and becomes forward bias when Q1 is OFF.

            

Instructions:

1. Attempt the Pre-test
2. Read Theory
3. Simulation
4. Attempt the Post-test

                  

                   

Data Sheets:

1. MC34063A
2. TPS40222
3. LM2596

Linear Power Supply

What is a Linear Power Supply?

A regulated power supply converts unregulated AC (Alternating Current) to a constant DC (Direct Current). A regulated power supply is used to ensure that the output remains constant even if the input changes.

Instructions:

1. Attempt the Pre-test
2. Read Theory
3. Watch the Videos
4. Attempt the Post-test

                  

                 

                  

Data Sheets:

1. LM117HV or LM317HV
2. LM7805
3. LM340