LM20343 / Max duty cycle

Tsukui Yusuke

Guru 21930 points

Other Parts Discussed in Thread: LM20343

Hi Team,

I'd like to ask about LM20343.

Our customer want to know the max duty cycle.

Please tell me the Min of max duty cycle.

Our customer is going to use LM20343 on the following condition.

◇Vin(typ)=20.5V,Vout=16V,Iout=2.5A

Customer feel uneasy. Because notation of Max duty cycle is Typ(80％).

（I was able to simulate in webench.）

4572.WebenchReportsServlet.pdf

Best Regards,

Yusuke　/ Japan Disty

over 10 years ago

0 Tsukui Yusuke over 10 years ago

Guru 21930 points

Hi Team,

Can I get the information ?
If you need more information or if I should clarify my comment , please let me know.

Best Regards,

Yusuke　/ Japan Disty

0 JohnTucker over 10 years ago in reply to Tsukui Yusuke

TI__Guru**** 191445 points

I'll see if i can get someone to look at it Monday.

0 Tsukui Yusuke over 10 years ago in reply to JohnTucker

Guru 21930 points

Hi John,

Thank you for your support.

I'm waiting for the response from your.

Best Regards,

Yusuke　/ Japan Disty

0 David Pace over 10 years ago in reply to Tsukui Yusuke

TI__Intellectual 1435 points

Hello Tsukui-san,

The applications engineer for the LM20343 discussed this request with the produce engineering team. Unfortunately the automated test program does not test maximum duty cycle so we have not data on the variation from the 80% typical value.

0 Tsukui Yusuke over 10 years ago in reply to David Pace

Guru 21930 points

Hi David,

Thank you for your support..

I understand that you do not have the test.

However,

Customers are trying to adjust the output voltage to match the maximum duty cycle(min).

Customer is going to use LM20343 on the following condition.

◇Vin(min)=20.5V,Vout=××V,Iout=2.5A

Please tell me the upper limit value of the output voltage In the above condition.

Best Regards,

Yusuke　/ Japan Disty

0 Tsukui Yusuke over 10 years ago in reply to Tsukui Yusuke

Guru 21930 points

Hi David,

Can I get the information ?
If you need more information or if I should clarify my comment , please let me know.

Best Regards,

Yusuke　/ Japan Disty

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LM20343 / Max duty cycle