PTN78020W paralleling and programmable margining

Fred Belsak

Other Parts Discussed in Thread: PTN78020W, LMZ34002, LMZ35003

Can converter modules like the PTN78020W be paralleled? That is, connected in pairs to double output current capacity. Does their adjustability get in the way of paralleling?

Regarding output voltage adjustment, a resistor to GND is shown for this. If we want to programmably adjust output voltage, what are the options here -- as in an ADC driving a resistor to the adjust pin, digi-pot, or what.

over 14 years ago

0 Tom Guerin over 14 years ago

TI__Mastermind 38230 points

Fred Belsak :

I reviewed this request for parallelling the PTN78020 series for increased current .

The PTN series cannot be parallelled under any conditions.

Regarding the voltage control of the PTN single series.

Can you send me an e-mail with your contact information?

Tom

tguerin@ti.com

0 Gonugunta Harshavardhan reddy over 9 years ago in reply to Tom Guerin

Prodigy 230 points

hi,

I am also looking into PTN78020W programmable part? Is is through DAC with resistor or DIGI pot?

0 Tom Guerin over 9 years ago in reply to Tom Guerin

TI__Mastermind 38230 points

I recommend LMZ34002 which can be paralleled and can easily be used with a DAC or digital control .

Send me a direct e-mail at tguerin@ti.com to continue this discussion.

Tom

0 Tom Guerin over 9 years ago in reply to Tom Guerin

TI__Mastermind 38230 points

Fred: Correction module #

I updated the recommended parallel module # to LMZ35003 buck parallel as a suggested replacement for PTN78020W. The link to LMZ35003 parallel is SNVA074 LMZ35003 Parallel Operation It can also be used with a DAC.

On PTN78020W question , contact me directly at tguerin@ti.com

Tom

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PTN78020W paralleling and programmable margining