MC33063A: The reference design of MC33063

user5005024

Part Number: MC33063A
Other Parts Discussed in Thread: LM3478

Hi,

We use the MC33063 in our Boost DC/DC design,the required parameter: Voltage input is 10.5 -15V, Voltage output is 23-24V, Current output is more than 1A,

We don't fine the reference design in the webench in the website,Can you help to show us any reference design suit the required parameter,thanks?

over 6 years ago

0 Jasper Li over 6 years ago

TI__Mastermind 46905 points

the MC33063A can't support this output capacitor. the output capability should be approximately 200mA
you should select a device like LM3478

0 user5005024 over 6 years ago in reply to Jasper Li

Intellectual 345 points

Hi Jasper,

We change the external transistor and increase og the output current upto 1A, Is it feasible?If yes, can you help to calculate the parameter of transistor,thanks?

0 Jasper Li over 6 years ago in reply to user5005024

TI__Mastermind 46905 points

it may be possible, but the inductor ripple is high and the efficiency is not good. we didn't try this condition before.
you can refer to the page 14 in the datasheet to design the external parameter.

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MC33063A: The reference design of MC33063