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LM22678: need a Negative power stage.

Chen Alex1
Genius 4215 points

Part Number: LM22678
Other Parts Discussed in Thread: LMR36506, LMR51606

hi Sir

We need a Negative rail stage. Vin:24v, Vout -15v/200mA

LM22678 Is suit? thanks

did you have any guide to do the DC inveter?

thanks

  • 0
    TI__Genius 13880 points

    Hi,

    LM22678 is a 42V device and 24V to -15V comes out to be 39V across the device. It is not recommended to use with such a low margin and is better to go for a 60V device.

    If 200 mA is the max current, you can consider LMR51606 or LMR36506

    You can refer this app-note for inverting buck-boost implementation : www.ti.com/.../snva856b.pdf

    Regards,

    Niranjan