Frequenct failure of HIP4080 Class D H bridge - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th May 2011, 12:51 PM   #1
diyAudio Member
 
Join Date: May 2011
Default Frequenct failure of HIP4080 Class D H bridge

We have developed Class D amplifier with H bridge configuration isng HIP4080. IRF230 from IR are MOSFET used in circuit. We have to give 60W power for 50Hz sine wave to drive a linear motor. As linearity and distortion are critical, we have used close loop circuit as shown in application note of HIP4080. Our problem is HIP4080 is failing frequently. Our observation is that when we change sine wave amplitude from function generator to change output power, at that instant at some of time it fails. If full power is set, IC does not fail but gets warm only. When we are increasing/decreasing sine wave amplityde, all of sudden it fails. Can anyone guide us ?
  Reply With Quote
Old 14th May 2011, 03:51 PM   #2
diyAudio Member
 
darkfenriz's Avatar
 
Join Date: Jun 2004
Location: Warsaw
The HIP thing doesn't look very much transient immune. It is not to blame as datasheet specifies that.
This fact in conjuction with using sense resistors and mosfet in high parasitic inductance package could be a reason.
They may be others though, including layout. Could you provide more data on the circuit?
  Reply With Quote
Old 14th May 2011, 08:23 PM   #3
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
Is the circuit well decoupled ?
Could be spikes/noise getting in somewhere.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Comparator Output with HIP4080 smartsabby Class D 2 14th March 2008 07:30 PM
Commercial (Alpine PDX) Class D Failure Pics and Question about IR2010s CBRworm Class D 5 1st August 2007 05:18 AM
Full Bridge Class D mcintoda Class D 8 8th January 2007 08:25 PM
ClassD problem with HIP4080 lumanauw Class D 8 7th February 2004 05:20 AM


New To Site? Need Help?

All times are GMT. The time now is 07:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2