LMG3422R030: Switching loss data

Nidhi Haryani

Part Number: LMG3422R030

The turn-on loss vs Id curve in Fig. 7-10 in the datasheet, Does than loss include both the devices in the half-bridge? will that be half for one device?

Thanks,

Nidhi Haryani, PhD

Member of R&D Staff

Delta Electronics (Americas)

over 1 year ago

0 Kyle Wolf over 1 year ago

TI__Expert 5625 points

Hi Nidhi,

We measure these losses in a half bridge topology where both devices are the LMG3422R030 device. These losses are for both devices in the half bridge in a hard switching situation.

Best,
Kyle Wolf

0 Nidhi Haryani over 1 year ago

Prodigy 30 points

Thanks Kyle, just to confirm, both the devices are hard switched? Since usually in buck or boost converter configuration, one device has natural soft switching.

Thanks,

Nidhi

0 Kyle Wolf over 1 year ago in reply to Nidhi Haryani

TI__Expert 5625 points

Hi Nidhi,

The setup is a double pulse test, the low side device is hard switched.

Best,

Kyle

0 Nidhi Haryani over 1 year ago in reply to Kyle Wolf

Prodigy 30 points

Thanks Kyle, so the low side device is hard switched and the top device is off?

Thanks,

Nidhi

0 Kyle Wolf over 1 year ago in reply to Nidhi Haryani

TI__Expert 5625 points

Hi Nidhi,

Yes, the bottom switch is hard switched and the top device is off.

Best,
Kyle Wolf

Power management

Power management forum

LMG3422R030: Switching loss data