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LM5045: Is there a way to turn both Lo FETS on at the same time?

Paul Riley
Prodigy 10 points
Part Number: LM5045

We want to use this device in a Multi-Level inverter configuration using low voltage batteries in modules. (one LM5045 in each module)

The modules are then put in series to form a higher voltage sine wave.

Some modules are permanently turned on, some have a short across their output and one is under PWM control.

A central controller decides which module is under which condition.

Is it possible to turn on both LO FETs at the same time? If so how?

if not are there any other similar devices that can do this?

Thanks

Paul

  • 0
    TI__Mastermind 34465 points
    Hello Paul,
    The LM5045 is an analog full bridge controller and so the short answer to your question is no. There is no provision made for turning both lower switches on simultaneously in a full bridge control algorithm. It is not clear from your description of your system as to your exact requirements.
    But it sounds like it is a non-standard controller.
    However it is possible with discrete circuitry to add additional control logic around the LM5045 controller and implement any control algorithm you require.
    This is the art of electronic circuit design.
    Regards
    John