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bigben2k · 05-09-2003, 12:47 PM

I was going over Brian's PWM article, when it hit me, about why a driver is reffered to as being high-side or low-side.

So I found this interesting chip: Maxim's 1614 (PDF, 8 pages). I'll review it later, to see if it could drive the MOSFET of the 12v line.

edit:
High side driver is for when a MOSFET is hooked up between the high voltage (i.e. +12) and the load.

Low side driver is for when the MOSFET is hooked up between the load and ground.

Since the ground is common in a PC for all voltages, it's not possible to setup a low-side MOSFET.

05-09-2003, 12:47 PM	#156
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	I was going over Brian's PWM article, when it hit me, about why a driver is reffered to as being high-side or low-side. So I found this interesting chip: Maxim's 1614 (PDF, 8 pages). I'll review it later, to see if it could drive the MOSFET of the 12v line. edit: High side driver is for when a MOSFET is hooked up between the high voltage (i.e. +12) and the load. Low side driver is for when the MOSFET is hooked up between the load and ground. Since the ground is common in a PC for all voltages, it's not possible to setup a low-side MOSFET. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101 Last edited by bigben2k; 05-16-2003 at 02:28 PM.