High frequency alternative to vn5e160str-e

[trullock]

I'm successfully using vn5e160str's to drive some high current outputs, but it would be useful if I could multi-purpose these outputs to support high frequency PWM. The vn5e160str seems to max out at about 50kHz, and I need a stable 800kHz.

The PWMd load is of course only CMOS level voltages/currents but I'm trying to avoid having separate output connectors for high current and pwm modes so a single device/circuitry would be idea.

Can anyone recommend a suitable similar component that can facilitate this?

Cheers

[Peter BENSCH · Accepted solution]

Welcome @trullock, to the community!

Please note that the VN5E160STR-E is an integrated high-side driver and not a MOSFET or other discrete component. Due to the extensive protective measures (Current Limit, Over Temperature, Power Clamp, VON Limitation, Open Load Detection, general Overload Protection, etc.), this driver inevitably reacts at a slower speed than those.

It is currently not technologically possible to achieve a switching frequency even close to 800kHz with these protective measures. For your specific case, I recommend that you take a close look at your load conditions (in addition to the levels, also the currents to be switched) and, above all, the cabling. Because 800kHz with possibly higher currents switched via connectors and possibly long cables is rarely a good idea due to the strong EMI.

Regards
/Peter

[trullock]

@Peter BENSCH thanks for your response

Yeah I appreciate what you're saying, the difficulty doesn't escape me. I just thought I'd ask in case there was some unknown revision suppporting what I'm trying to achieve.

Thanks or your time