MP6540A Current Sense Resistor

Hallo everybody,

The MP6540A-Datasheet say’s:
“… connect LSS-pin directly to Ground…”

Is it possible to insert a shunt-resistor (~ 0,033 Ohm) between LSS and Power-Ground?
Need this signal for a BLDC-Controller.

Best regards


Hello Frank,

Please connect the LSS directly to ground. If it is not tied to GND, it may need to improper switching.

What are you using the LSS pin for? It is the LS FET GND connection. Please see the block diagram on page 10.

Vinh Tran

Hello Vinh,

I need to measure the DC-Bus current to limit the Motor-Current