Part Number: UCC27211 Hi all,
We have 2 different types of motor. We would like to calculate the correct switching frequency for these motors. Do you have any application note for that ?
Motor 1 inductance is 330 uH
Motor 2 inductance is 83 uH.
Thanks…
Part Number: UCC27211 Hi,
I will post from "Related Questions".
FAQ was posted about the differences between UCC27211 and UCC27211A.
------------ The UCC27211A also has an improvement to the noise immunity on VDD compared to the UCC27211. ---…
Part Number: UCC27211 Hi guys,
I'm trying to import the pspice model of the UCC27211 in LTspice. However, every time I try running a simulation I get the message in the below picture. Does someone have an idea of why I can't run my simulation ?…
Part Number: UCC27211 Hi Team,
in datasheet, there is max or recommended rating on each pin. Then if we want to test the rating of this device, how to test it, especially negative voltage spec and some spec has time limit?
for example, there is -2V/100ns…
Part Number: UCC27211 Hi all,
As the title suggests, the output of the low-side gate driver does not follow the input correctly as you can see in the picture below.
CH1: Supply voltage
CH3: Output of gate driver (LO pin)
CH4: PWM input (LI pin)
The…
Part Number: UCC27211 Dears
We have an application of DCDC with 15V input and 5V output, in this case, the UCC27211 have 12V supply to drive the MOSFET. We have found the high side output not follow the high side input, when the DCDC load current increase…
Part Number: UCC27211
Hi,
When VDD starts up, LO = H is output even though LI = L is input. This phenomenon occurs only when VDD starts up.
It is presumed that the rising speed of VDD has an effect.
Based on the above, when we increased the capacity…
Part Number: UCC27211 Hello,
on a Motor Controller i switched from ISR21867 to UCC27211 Gate Driver, because it has an internal diode. But the Motor COntroller does not work.
So i have scoped the signals:
Green = Highside (Diffprobe) Blue = phase Red…
Hi Richard,
Thanks for your suggestions. Here are some more questions:
1. The input voltage is 80V and nominal output current is 60A, do you think how much slew rate of SW rising edge is suitable to this application with your experience?
2. Customer use…
Part Number: UCC27211 Hi Experts,
I'm simulating a half-bridge setup using UCC27211. For the FETs used, Cgs=4.7n, Cgd=1.8n, Cds=6.9n (all at VDS=0v). I'm observing unusually high spikes in Vgs-LS, Vgs-HS in LTSpice simulation. Following is the sch and…