AMC1304L05: drv8301

jianyuan liu

Part Number: AMC1304L05
Other Parts Discussed in Thread: DRV8301, TIDA-00080

In my case, i'll use the amc1304 and drv8301 to drive the BLDC.

And I’ve read the sch of TIDA-00080 - ISE3010.

1. My question is why GND_USH1 and GND_USH are not same net ?

Is it can work ok ?

In my design, I didn’t use the isolated transform and ldo,

I get the amc1304’s ldo_in voltage from the drv8301’s “BST”(up-end of Bootstrap capacitance )

Is it can work ok ?

0 jianyuan liu over 4 years ago

3. A new question, the amc1304 have an LDO internal, why should use the tlv70450dbv ?

0 jianyuan liu over 4 years ago in reply to jianyuan liu

4. if the ainp/n is from agnd-6v ~ 3.7v , so i think the D28.pin2 is connect to AVDD(amc1304's pin 7) is more better ?

0 Kallikuppa Sreenivasa over 4 years ago

Hello Jianyuan

The GND_USH and GND_USH1 have been separated for routing purpose. You can connect them together.

Should be Ok to derive the power from DRV8301

We have some inverter reference design that you could refer

Thanks

0 Kallikuppa Sreenivasa over 4 years ago in reply to jianyuan liu

Hello Jianyuan

This is a reference design to showcase multiple options. You can choose the optimized approach for your design.

Regards,

0 Kallikuppa Sreenivasa over 4 years ago in reply to jianyuan liu

Hello Jianyuan

You have to consider the diode leakage current and the maximum allowed input voltage and decide the termination of the diode.

Regards,

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