This Presentation is about Digitals Switching in MOSFETS. In this lecture working of MOSFETS is explained and also shows how MOSFETS are used in Power switching.

1. Electronic Devices and Circuits
Digital Switching in MOSFET
Presented by: Muhammad Ubaidullah Ghaffary(20-TE-91)
Malik Ameer Mavia(20-TE-71)

2. Digital Switching
Digital
Devices
Micro
Processor
ALU
Logic
Gates

3. CMOS(Complementary MOS)
 Technology to construct ICs, Logic gates etc.
 pMOS:
• Used to make Pull Up Networks(PUN)
• In PUN “+” suggests series and “.” suggest parallel
• Passes 1(VDD)
• 0 to gate will ON
• 1 to gate will OFF
 nMOS:
• Used to make Pull Down Networks(PDN)
• In PUN “.” suggests series and “+” suggest parallel
• Passes 0(ground)
• 1 to gate will ON
• 0 to gate will OFF

4. CMOS(Complementary MOS)

5. CMOS Inverter Operation
 When Vin=0 Vout=VDD
 When Vin=VDD Vout= 0

6. NAND Operation
A B Output
0 0 1
0 1 1
1 0 1
1 1 0

7. NOR Operation

8. MOSFET In Power Switching
 MOSFET has
 Positive temperature coefficient which prevents thermal runway.
 Low Power Losses
 Fast switching Speed
 MOSFETs are used for
 Motor Control
 DC to AC Conversion
 DC to DC Conversion
 Load Switching

9. Thank You