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DC-DC 8.1-12.6V input, output 12V/2Amps, Non isolated, low iq battery application

VT
Genius 3300 points
Other Parts Discussed in Thread: TPS55288, LM25118, LM34936

Need to have dc-dc with input voltage range: 8.1V-12.6V, output: 12V/2A, Non isolated, should be low power as it is battery powered.

Current limit or overload protection is plus. Can u suggest some suitable part for it?

  • 0
    TI__Guru* 78400 points

    Hi VT,

    Thank you for reaching out.  This may need a buck-boost circuit as your Vin can be higer or lower than Vout regulation point.  You have three options: LM25118, LM34936, or TPS55288.

    The LM25118 is a two-switch non-sync buck-boost, and the LM34936 a 4-switch sync buck-boost, and TPS55288 also a 4-switch  sync buck-boost but two FETs are integrated.  Sync here means synchronous rectifier, which replaces the diode rectifier in the non-sync circuit.  The former two devices are already released but the TPS55288 is in engineering sample stage. 

    Thanks,

    Youhao Xi, Applications Engineering