LMR14050: Looking for a part similar to XR76205

Roy Hsu

Genius 9190 points

Part Number: LMR14050
Other Parts Discussed in Thread: LMS3655, LM73605,

Hi there,

Do we have any device (or any roadmap devices) similar to XR76205?

It has to be a converter with synchronous rectification.

Thanks!

Best regards,

Roy Hsu

over 6 years ago

0 Andy Chen over 6 years ago

TI__Mastermind 27045 points

LMS3655 or LM73605 is 5A synchronous buck converter. pls check data sheet on TI website and let us know if any more question.

0 Roy Hsu over 6 years ago in reply to Andy Chen

TI__Genius 9190 points

Hi Andy,

I actually suggested LM73605 to my customer but the price gap is pretty huge between us and Exar...

But I reckon these are the only two solutions that are suitable for their requirement.

Thanks!

Best regards,
Roy Hsu

0 Andy Chen over 6 years ago in reply to Roy Hsu

TI__Mastermind 27045 points

Hi Roy,

What's application Vin/Vout? if duty cycle>40% and Vout>=5V, LMR14050 may has similar conversion efficiency compared with Sync converter.

0 Roy Hsu over 6 years ago in reply to Andy Chen

TI__Genius 9190 points

Hi Andy,

The operating conditions are shown below: (they are good with using 2 buck converters)

(1)Vin : 9-36V / Vout = 5V / Iout = 5A

(2)Vin : 9-36V / Vout = 3.3V / Iout = 5A

Under these conditions, will the efficiency of LMR14050 still be comparable to LM73605?

Thanks!

Best regards,
Roy Hsu

0 Andy Chen over 6 years ago in reply to Roy Hsu

TI__Mastermind 27045 points

Roy,

I check data sheet and below eff data for your reference:

Vin : 12V / Vout = 5V / Iout = 5A

LMR14050 eff=88% LM73605 eff=92%

Vin : 12V / Vout = 3.3V / Iout = 5A

LMR14050 eff=83% LM73605 eff=90%

high perfromance LM73605 has better conversion eff than LMR14050 which is more cost-effective.

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LMR14050: Looking for a part similar to XR76205