Hi user4708725 ,
The closest schematic is the block diagram (Figure 2) of the application report.
The driver block used was a 6x PWM gate driver.
There are several devices that can be used for the driver. Examples of 6x PWM devices include the DRV8301…
Part Number: TMS320F280023C Other Parts Discussed in Thread: C2000WARE
Hello,
I'm facing an issue where my SPI writes fail when I add a line of code.
The hardware setup is an F280023 microcontroller interfaced to a DRV8304S that controls a BLDC…
Part Number: BOOSTXL-DRV8304H Tool/software: I'm unable to find this demo software on the site - any ideas?
Also - my eval board is labelled BOOSTXL-DRV8304X all documents indicate I or H does this matter?
Mohammad, The EVM is different than the device datasheet because of some design considerations: 1. The EVM may use a different clocking scheme (polarity) so therefore please use it in the mode it works. 2. The voltage range of 4-45V is for the DRV device…
Hi Emanuel,
I am glad to hear that changing the DRV fixed the issue!
1. When SHA and GHA are equal as shown in the waveforms you provided, the MOSFET is off and the phase is in Hi-Z mode (both MOSFETs of half bridge A are off). The SHA voltage goes…
Hi Daniel,
It should be fine to route the differential traces under the gate traces as long as:
1. They intercept the gate traces at 90*.
2. Preferably having a ground layer that is separating the gate traces and the differential traces. If you…
Hi Yardi,
Thank you for your questions!
You mentioned that you are targeting 100ns MOSFET rise/fall time. A few important notes:
1. The MOSFET rise/fall time refers to the VDS rise/fall time, not the VGS rise/fall time. So to properly understand…
Hi Chase,
I discussed with the team and they recommended using a 47nF capacitor for the charge pump. There were some reasons why we initially suggested a 10nF capacitor, but those issues have since been resolved so now the 47nF capacitor is the recommended…
Hi Adarsh,
Thanks for your post! I looked over the portion of the schematic that you provided and have the following comments:
1. For phase B and phase C, the bootstrap capacitors are accidentally connected to the GHB and GHC pins. These should…
