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.

MOSFET Driver No Output

Status
Not open for further replies.

nsguiamano

Junior Member level 1
Joined
Feb 5, 2014
Messages
19
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
170
Hi, I'm using an IRS 2117 high side mosfet driver connected in the circuit below
Capture.JPG
Vcc is 15Vdc from a DC Power supply
Vbat is a square wave from a function generation
And I attached a 470kohm resistor from Vbat_Vs to ground.
I'm also using electrolytic caps.

Probing Vbat_HO with respect to Vs, I can't seem to get any output.
Probing Vbat_HO with respect to Vs, my output is 6~7Vdc.

Why is this happening?
I've tried replacing the diodes, and cpacitors used. As well as increasing the input voltage level.
I've already used the high side low side version of this driver (IRS21867) and didn't encounter any problems using that and following the circuit in the datasheet.

Any thoughts?
 

Hi,

What is VBat voltage level?
Does it meet VIH specification?

Please show a complete circuit with all voltages and all resistors (like Vs to GND).

Check your C18 connection. I think it should be connected to HO.

Klaus
 
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top