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UCC27211: selection of the driver chip

Tonyx.wu
Genius 3895 points
Part Number: UCC27211
Other Parts Discussed in Thread: LMG1210, , UCC27302A, LM5105

Tool/software:

The MOS driver requires single-ended input and differential output

2.  The dead time of the output signal is greater than 20us(minimum 15)

3.  Output voltage is greater than 10V


The output current is required to be greater than 4A



We found that there was a problem with the selection of the driver chip previously.  The LMG1210 and UCC27211 we chose before were not very suitable

Could you recommend a suitable chip or a complete solution?  Thank you!

  • 0
    TI__Genius 14145 points

    Hey,

    Thank you for reaching out to TI with your questions regarding the UCC27211.

    2. Our gate drivers with deadtime are all <1us as they typically operate in the range of 100kHz or so. The LM5105 is our single input driver with adjustable deadtime (DT) up to 570ns and is a 1.8A source and 1.6A sink driver. Another way to implement this would be to add an inverter and delay circuit to allow for single PWM operation with one of our 4A driver like the UCC27302A. The UCC27302A is a 3.7A source and 4.5A sink current driver that is rated at 120V and has input interlock to provide protection against potential cross conduction. Here is an FAQ on how to implement an inverter circuit with our dual input drivers to accept a single PWM circuit. A delay circuit would also need to be added in order to achieve the large DT that is needed.

    [FAQ] How to use a dual input half-bridge driver with a single PWM signal

    3. The UCC27302A accepts 7V-17V inputs on VDD so achieving >10V of output is very achievable.

    The UCC27302A has a drive current of 3.7A source and 4.5A sink peak currents.

    Let me know if you have any questions.

    Thank you,

    William Moore