TIDA-00281: Reason for 3 MOSFET Driver usage

elavarasan veeramuthu

Prodigy 50 points

Part Number: TIDA-00281
Other Parts Discussed in Thread: DRV8303

What is the purpose of using separate 3-MOSFET driver(UCC27201AQDDARQ1) for each Phases,

Why single DRV8303 cannot be used in this application, any reason for this.

Request your feedback.

over 3 years ago

0 Don Dapkus over 3 years ago

TI__Guru**** 189399 points

Hi, Elavarasan, Either is a valid architecture. Benefits of an UCC27201-based design: - higher source and sink current for fets - located closer to FETs for better PCB layout - power dissipation of driver spread across three ICs - more flexibility to modify design architecture - hardware controlled, no firmware required Benefits of DRV8303-based design: - slew rate control for reduced EMI - supports 100% duty cycle - includes current sense amplifier - more flexibility to tune design via software

0 elavarasan veeramuthu over 3 years ago

Prodigy 50 points

Dear sir,

Please suggest for 3 phase BLDC motor driver ( 48V, 50Apms, 1KW controller)

Which design is better

1) Having 3 Mosfet driver for each Phase channel.

2) Having single MOSFET for all three phase.

Which design will be optimal.

0 Don Dapkus over 3 years ago in reply to elavarasan veeramuthu

TI__Guru**** 189399 points

Hi, Elavarasan, I listed the trade-offs above, it is up to you to study them and decide which is best for your particular application.

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TIDA-00281: Reason for 3 MOSFET Driver usage