Part Number: DRV8801 Other Parts Discussed in Thread: DRV8870 , DRV8251 , DRV8251A , DRV8231 , DRV8231A , DRV8876 , DRV8876EVM , Hi,
in the DRV8801's datasheet, i found that there's an UVLO for the VBB pin at around 6.5 ... 7.5V.
But the nFault indicates…
Hi Ian,
It is possible to reach those temperatures If the board layout has not been optimized for good thermal dissipation. Poor thermal dissipation may cause the temperature to greatly increase.
Is the customer using their own board design or the…
Hi Anjanaa,
There are several options available:
1) Use PH/EN or PWM mode without PWM'ing the inputs. For this, set the inputs as GPIO.
2) PWM the inputs in PH/EN mode. For this, configure the EN input as PWM timer and PH as GPIO.
3) PWM the inputs…
Hi user,
Methods are available to address switch-node ringing through the external measures and system adjustments (reducing slew rates, external snubbers, and others) but a fundamentally sound layout can address many of these primary issues. Note that…
Hi Wang,
There was a problem connecting the grounds between two development kits that I was using. The results are quite good right now.
I have connected 100nF to C9 at the DRV8876EVM, do you think is that a good practice to smoothen the IPROPI…
Hirotaka-san,
I checked one DRV8876EVM. From the test, DRV8876 OUTx pulse width jittering could be 600ns, I would say INx should have at least 800 ns of pulse width to ensure detection. Also, it should not be used for small duty cycle control due to…
Hi Itoh-san,
I looked through the waveforms in more detail. It seems like there are two noise spikes, the one in IPROPI and the VM spikes. These two spikes seem to be independent of each other. Placing the driver to sleep only removes the VM noise …
Part Number: DRV8876 Hi
I want to use DRV8876 with following motor.
VM=24V Iout = 0.34A Istartup = 0.9A
These parameters are given by the customer. (There is no datasheet)
In DRV8876EVM, Vref is set as 3.3V (Itrip = 2.2A). And I changed…
Daniel,
The 3.5-A peak value is the maximum transient peak current the device can withstand before over-current protection is triggered. We don't specify the maximum continuous current because as I said, it depends heavily on PCB design which is out…
