OPT8241: Illumination

Kai Hsiao

Part Number: OPT8241
Other Parts Discussed in Thread: CSD16301Q2

HI Sir

I saw OPT8241 EVM have Illumination driver circuit

1. May I know what' function of CSD16301Q2?

2. CSD16301Q2 and CSD17578Q3 will turn on turn-on the same time ?? in this case ,MOFSET will have shoot through damage issue ??

3. I saw TRIG_G will operate on 30MHZ~80MHZ ,May I know min duty cycle and max duty cycle ??

Thanks

over 7 years ago

0 Praveen Aroul over 7 years ago

TI__Mastermind 49946 points

Hello Kai,

We have received your questions related to OPT8241EVM driver circuitry. The device apps team will get back to you with a response shortly.

0 Larry Li over 7 years ago

TI__Expert 3495 points

The top MOSFET works like a power switch. The bottom MOSFET works like a secondary 'enable' switch. During integration time, the bottom MOSFET stays opened. The top MOSFET only switches when the bottom MOSFET is closed. When the top MOSFET closes, it energizes the inductor; when the top MOSFET opens, the energy discharges as current through the lasers.

0 Bharath Patil over 7 years ago in reply to Larry Li

TI__Intellectual 2030 points

Hi,

We strongly suggest reading this application note - www.ti.com/.../sbaa209

Regards

Sensors

Sensors forum

OPT8241: Illumination