H bridge driver

Either the CSD18531Q5A or the CSD18533Q5A will do the job. Both will be perfectly capably handling your power requirements, however the18531 has a slightly lower Rdson value. Please let me know if more help is required. Thanks for posting,

Brett Barr

Hello,

Sorry to hijack this thread, i don't want to start one just for this. I am looking for an H-Bridge, which can provide 3.5 amps or more, accept PWM signal on its inputs of 100KHz in frequency, and of course, cover a voltage range as wider as possible. I saw DRV8412 and DRV8432, but these parts have their "supply for logic regulators and gate-drive circuitry" between 10.8 and 13.2 volts, and i have a single power supply to power this whole thing. 

So if i power my board at 7.2 volts from a battery pack, the gate drive will not work.

Do you have any suggestions?

Thanks,

pityu

Truth be told Pityu, 

We work exclusively with NexFETs, so I think someone else may be able to assist you better. Can you tell me what is your application? 

Hello Brett,

thank you for your reply. I am designing a motor controller board, i got back to design phase, because i needed more power and a wider range of supply voltage.

Until now i was planning to go with DRV8835, but that can output a maximum of 11V and 1.5 amps. Could you guide me to the place i should be asking these questions?

Thank you very much,

pityu

Pityu, 

My suggestion would be to try the motor control forum. 

Look under "Applications > Motor Drivers"

I believe this team will be of the most assistance to you but I will be happy to help you further in any way, particularly if your design ends up using a pre-driver with external FETs. 

Thanks, 

Dear Brett Barr,

I am searching a NexFET Power Blocks (see slit127.pdf) to drive bipolar stepper motor.
Driver is low frequency (and continuous to brake) apps compared to Switch Mode Power Supply.
Only CSD87353Q5D works in High Duty-Cycle Applications, why can't others do?.

Can DRV8711/Allegro4989 drive NexFET Power Blocks?
Do NexFET Blocks have built in reverse current diodes?
to use 4 dual NexFET instead 8 HexFET, and drive motor from 1A to 9A,
current is limited by driver(sense) with Duty-Cycle <45kHz.
Normal voltage requirement is 9-24V, ideal 9-48V.

Regards.

Giancarlo, 

I spoke with our applications team and got the following response. 

"CSD87353Q5D is optimized for high duty cycle and high current, however, it can work for low duty cycle applications, too. This is the same for all other power block devices – they are just more optimized for low duty cycle application for performance/cost point of view, but there is nothing functionally wrong that prevent them from being used for high duty cycle. It is all dependent on the performance, cost, thermal…"

On using with the DRV8711:

"CSD87353 and other PBs are only rated for 10V max VGS voltage. The gate driver voltage of DRV8711 is too high so these PBs can’t be used."

On the 24Vin 

"The VSW ringing needs to be checked since the BV for MOSFET is 30V. Please reserve snubber, Rboot, Rg, etc. in case they are needed to control the ringing below 30V."

In addition to all the above, if you want to handle up to 48Vin, we actually designed a dual 60V SO-8 device specifically for applications like this and predrivers like the DRV8711. It is not scheduled for RTM until Q1 of 2014 however, so feel free to contact me offline if you want to know more about this at b-barr@ti.com .

Hi Mr. Brett Barr, 

I have an application where I am running current through copper coils to create a magnetic field and I thus need high power and current - I'd like to have 60V, and 4Amp for the max values. I need a H-bridge to change the direction of the current - would you say a Power MOSFET, such as CSD88537ND or the ones you linked above (CSD18531Q5a or CSD18533Q5A) would be good for this application or would they be overkill? Thank you in advance for your assistance!

If 4A is your max current then I would recommend the CSD88539ND,  www.ti.com/.../csd88539nd.pdf   .