LMZ34002: LMZ34002

Mamzi Ghasemi

Prodigy 130 points

Part Number: LMZ34002
Other Parts Discussed in Thread: LMZ36002

Hi TI,

LMZ34002 is out of stock. Could you please help me find an alternative.

I need to make -15v from 24v input. output current minimum of 0.5A.

Thanks,

Mamzi

over 2 years ago

0 Arief Hernadi over 2 years ago

TI__Mastermind 23815 points

Hi,

You may be able to use this power module in the inverting buck boost topology

https://www.ti.com/product/LMZ36002

Here is some app note that may help in your design

https://www.ti.com/lit/an/snva962/snva962.pdf?ts=1633373466983&ref_url=https%253A%252F%252Fwww.google.com%252F

Thanks

-Arief

0 Mamzi Ghasemi over 2 years ago in reply to Arief Hernadi

Prodigy 130 points

LMZ36002 is really good, except it supports up to 7.5v output. • Wide-Output Voltage Adjust (2.5 V to 7.5 V)

I need to make 15V.

0 Arief Hernadi over 2 years ago in reply to Mamzi Ghasemi

TI__Mastermind 23815 points

Hi Mamzi,

You may be able to use this one but the rated current in Inverting mode is 0.8A.

https://www.ti.com/lit/ds/symlink/tpsm5601r5h.pdf?ts=1633394754851&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPSM5601R5H

And here is the app note to use the part in Inverting Buck Boost Configuration (Table 2.1)

https://www.ti.com/lit/an/snva962/snva962.pdf?ts=1633394597412&ref_url=https%253A%252F%252Fwww.google.com%252F

I hope that helps

Thanks

-Arief

0 Mamzi Ghasemi over 2 years ago in reply to Arief Hernadi

Prodigy 130 points

Thanks for the links.

I was gonna double check the component selection with WEBENCH design, but when I put 24V as input, it says invalid input

Any thoughts ?

+1 Arief Hernadi over 2 years ago in reply to Mamzi Ghasemi

TI__Mastermind 23815 points

Hi,

Seems like the minimum value for VIN is limited to 12V

Here is a sample design using webench for a standard 3.3V output

https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=80D317E0956ADA52

In terms of your specification, i would refer to table 4.1 from the app note

https://www.ti.com/lit/an/snva962/snva962.pdf?ts=1633394597412&ref_url=https%253A%252F%252Fwww.google.com%252F

Thanks

-Arief

Power management

Power management forum

LMZ34002: LMZ34002