TMDSCNCD28069: Level Shifter for 0-5 V PWM to 15 V PWM Signals

Sri Nikola

Part Number: TMDSCNCD28069

Hello, I am using TI F28069 ControlCARD with a third party DSP hardware. The DSP board has a level shift circuit with a 16‐bit dual supply translating transceiver IC 74ALVC164245 with the help of which it is converting 0 to 3.3 V PWM to 0-5 V PWM signals for IGBT gate drivers. However, I am using SKYPER 32 PRO R gate driver board (as per below datasheet pdf link). I would like to know if there is a suitable level shifter that can be used to give PWM signals to these drivers? The drivers are going to switch the modules for driving the 3 phase motor. Also, should I use something like optocouple for isolation in this case for level shifting from DSP board to driver board?

www.semikron.com/.../

over 7 years ago

0 Yanming Luo over 7 years ago

TI__Guru** 113180 points

You can use high voltage, high current darlington transistor array (ULN2003 or UNL2004) to do this if you don't need isolation, or you use optocoupler for this if need isolation.

0 Sri Nikola over 7 years ago in reply to Yanming Luo

Prodigy 225 points

Thanks. I need an isolation. Can you suggest an optocoupler for this?

0 Yanming Luo over 7 years ago in reply to Sri Nikola

TI__Guru** 113180 points

You can use any optocoupler based its voltage and drive current if it's only for voltage level shift. You can use isolated gate driver if you need MOSFET/IGBT drivers as below.
www.ti.com/.../products.html

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TMDSCNCD28069: Level Shifter for 0-5 V PWM to 15 V PWM Signals