I am looking for a power driver to control the contactors in my BMS. I have some contactors around, but all without built-in economizer. Recommended PWM frequency by TE is around 16-20KHz to minimize current ripple.
The BTS6143D I used in a previous design is unfortunately not suited for high-frequency PWM.
Does someone have a suggestion ?
- At least 4 amps switching capability (cold coil inrush)
- 16-20KHz PWM capable
- High-side or low-side
- preferably stocked by JLC
I did already find the AUIPS7221 (up to 100KHz), but this is unfortunately not stocked by JLC.
Driver-IC for 16-20KHz PWM signal // suggestions ?
- larsrengersen
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Re: Driver-IC for 16-20KHz PWM signal // suggestions ?
How about using a TI DRV103?
https://www.ti.com/lit/ds/symlink/drv103.pdf
https://www.ti.com/lit/ds/symlink/drv103.pdf
Re: Driver-IC for 16-20KHz PWM signal // suggestions ?
The DRV 103, is a good option.
Have not used it, but have used the DRV 102 with tesla contactors (had a lot of them laying around)
It just works!
viewtopic.php?f=13&t=131&p=4140&hilit=drv102#p4140
Have not used it, but have used the DRV 102 with tesla contactors (had a lot of them laying around)
It just works!
viewtopic.php?f=13&t=131&p=4140&hilit=drv102#p4140
Thomas A. Edison “I have not failed. I've just found 10,000 ways that won't work"
Re: Driver-IC for 16-20KHz PWM signal // suggestions ?
Thanks about the tips regarding the DRV102/103 ! Unfortunately the DRV102 is no longer produced (and difficult to source in the EU), and the DRV103 is rated for 3A, with a current limit at around 3.5Amps. According to the datasheet "Output current resets to zero when current limit is reached".
I could do some tests, but am worried that this limit will be reached with a 3.14 ohms TE EVC500 contactor.
I could do some tests, but am worried that this limit will be reached with a 3.14 ohms TE EVC500 contactor.
- celeron55
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Re: Driver-IC for 16-20KHz PWM signal // suggestions ?
I used BTS5215L in one design. It's a 3.7A dual high side switch and the outputs can be paralleled for 7.4A capacity. For a high side switch this makes it fairly cost effective. It's not suitable for PWM though.
You didn't list any reason why you couldn't use a simple MOSFET. Maybe a MOSFET + a PPTC fuse for short circuit protection? Certainly PWM capable, lots of current, cheap and stocked by JLC.
You didn't list any reason why you couldn't use a simple MOSFET. Maybe a MOSFET + a PPTC fuse for short circuit protection? Certainly PWM capable, lots of current, cheap and stocked by JLC.
Re: Driver-IC for 16-20KHz PWM signal // suggestions ?
Using a simple MOSFET& polyfuse would be my backup route.
With all the PWM-controlled valves, servo's etc. in modern cars, there must me something more sophisticated (temperature protected, overcurrent switchoff,..) around for this task ?
With all the PWM-controlled valves, servo's etc. in modern cars, there must me something more sophisticated (temperature protected, overcurrent switchoff,..) around for this task ?