Part Number: UCC21521 Other Parts Discussed in Thread: UCC28950 , , UCC21551 , UCC21520 , UCC21530 Tool/software: Hello, For one of our customer we are designing power converter module using PSFB topology. Control IC we are considering as of now is UCC28950…
Part Number: UCC21521 Other Parts Discussed in Thread: UCC21551 Tool/software: Hello ,
I have downloaded a PSPICE transient model of UCC21521 from the TI website and ran a transient simulation. However, the simulation fails to converge.
In transient…
Hi sean,
Thanks for your advise.
We tried TVS diode SMBJ15A-E3/52 (Stand off Voltage 15V) across Mosfet driver UCC21521 power supply voltage (VDD15V) to clamp the transient voltage that goes beyond 25V.
As expected, TVS diode clamps fast transients if…
Part Number: UCC21521 Other Parts Discussed in Thread: PMP23223 I am trying to use a pair of UCC21521 as a full bridge high voltage pulser. During the beginning of the short 5 cycle tone burst the UVLO activates on the High Side Output and does not permit…
Part Number: UCC21521 Hi,
we are facing same problems discussed in the following thread about gate ringing oscillations:
https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/895653/drv8305-ringing-oscillation-on-mosfet-g…
Part Number: UCC21521 Hi,
I am trying to simulate PSpice model of UCC21521 with MOSFET ( NVHL027N65S3F ) Hex bridge and flyback diodes(IDW80C65D1) parallel with it . We want to estimate the current through the flyback diode. The motor's coil resistance…
Part Number: UCC21521 Hi Team,
When I look at D/S, NC pin has no connection with internal circuit. So, that mean customer can connect NC to GND? or left open is recommended?
Regards,
Kotaro Yamashita
Part Number: UCC21521 Hi!
We are trying to simulate and debug a circuit where UCC21521 is used to drive Hex bridge MOSFET( IXFH56N30X3 ) for motor load. In the simulation, we used IXT_96N15P MOSFET. We are facing convergence issues and the upper MOSFET…
Part Number: UCC21521 Hi!
We are trying to simulate a motor driver circuit in TINA TI software. The circuit has UCC21521 motor driver, connected to a hex bridge MOSFET (IXT_96N15P,NMOS) configuration to drive a three phase BLDC motor. We generated PWM…
Hi Olivia,
Sorry for the delay.
1. Power to UCC21521 was from 15V, 8W DC-DC converter.
Motor power supply was 160Vdc
2. PWM switching frequency was 20kHz, duty cycle varied from 0 to 100%
3. Due to shortage of ICs we are still in process of procurement…