LTC4444 Use as iinverter on BLDC motor application

Hi BestUser,

Apologies for late response. Looking at the datasheet, this product is designed to be used for DC/DC converter applications. I am not sure if it is advisable to use for full bridge applications.

Hi BestUser,

Apologies for late response. Looking at the datasheet, this product is designed to be used for DC/DC converter applications. I am not sure if it is advisable to use for full bridge applications.

Hi,

i also noticed from the datasheet that this is a DC-DC gate driver but this is the only gate driver with a -55°c operative temeperature i found. It seems almost impossible to find a gate driver with such low temp range. Could we have more informations to confirm that LTC4444 is completely to avoid for a full bridge inverter application? Or, could you suggest any other gate driver with -55 operative temp?

Thanks

Regards

The LTC4444 does not contain a charge pump (for example, like the 100% duty LTC7001) and therefore requires a diode (from VCC to BOOST) and TS to pull to ground periodically to refresh the BOOST-TS capacitor.  If this is acceptable in your application, then the LTC4444 may be a good choice.