Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Purpose of Dual PMOS common source configuration

Status
Not open for further replies.
D

dcoaster

Newbie level 2
Joined
Oct 8, 2014
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
17
Hi all,
I'm starting a design of a power controller using the LTC 4417 chip (https://www.linear.com/product/LTC4417). In the typical application, it shows the use of dual PMOS in a common source configuration. What exactly is the purpose of using two versus just a single PMOS? Is it simply for the voltage sense?

Thanks!
 

For bi-directional current flow. You use them generally as a load switch and it allows very low conduction losses in either direction when on. Then when you turn it off, it blocks in both directions, as you have the inherent drain-source body diode back to back. Otherwise called a bat fet for battery fet, as you find them as the main switch fgoing into Li Ion battery charging.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top