The IR/IR are high voltage, high speed power. MOSFET and Please refer to our Application Notes and DesignTips for proper circuit board layout. APPLICATION NOTE. 1. GATE DRIVE REQUIREMENTS OF HIGH-SIDE DEVICES. The gate drive requirements for a power MOSFET or IGBT uti- lized as a high. Design and Application Guide of Bootstrap Circuit for. High-Voltage Gate-Drive IC. Rev. • 12/18/14 1. Introduction. The purpose of.

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Jul 3, I just redid my calculation and the answer turns out to be the same. Hope I could help. Jun 18, 4. Turn-off delay time is 42nS. One question though – suppose I require a capacitor of 1uF. noge

Sign up or log in Sign up using Google. I have a boot strap circuit and have also charged the capacitor by giving pulse to low side switch first.

Too high and some FETs will start to turn on only ones wity very low Vth.

High voltage half Bridge mosfet problem.

Unfortunately, by looking at the suggested schematic see below I’m unable to understand what value should I be using for this. Apr 5, 18, 3, The value for 20kHz is 0. Email Required, but never shown. The capacitor size came out to be approximately 1uF.


One question though – suppose I require a capacitor of 1uF. Try also the other mosfet. If it does then cross conduction is highly likely. That’s for the 20 kHz side presumably.

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High voltage half Bridge mosfet problem. | All About Circuits

Jun 18, 2. It’s a long drive home. I greatly appreciate any help. Does the capacitor need to be bigger than this in practice? Quote of the day. Thank you very if2113.

Posted by Runs in forum: I cbs – leakBootstrap cap. V Minthe application note states this is the minimum voltage between the Vb and Vs. Discussion in ‘ The Projects Forum ‘ started by iamhereJun 18, You May Also Like: Home Questions Tags Users Unanswered. I really don’t have time to go through all of this, but it sounds like you’re running into a cross-conduction problem due to insufficient “dead time”; and you’re running at some fairly high frequencies.

The simulation however fails with overflow and convert error. By clicking “Post Your Answer”, you acknowledge that irr2113 have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.


HelloAre there anybody experienced at high voltage half bridge? I am unable to understand what is happening and would want some pointers and help to fix this issue. No license, whether express ri2113 implied, is granted by Infineon. Posted applicatlon iamhere in forum: Thank you very much. Infineon makes no warranties or representations with regard to this content and these materials of any kind, whether express or implied, including without limitation, warranties or representations of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right.

Jul 1, Hello, What driver chip are you using? it2113

The capacitor size came out to be approximately 1uF. The application note is clear on ceramic vs. Hi iamhere, In the diagram attached, I’ve shown two configurations for halfbridge circuit. Sign up using Facebook. Your name or email address: Post as a guest Name.

Jun 18, 3. Should I use a 1uF cap. This error happens right at the beginning of the simulation.

You may need a more capable gate driver IC. Jun 18, 6.