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LMG1210: /LM5113 - internal resistance

Part Number: LMG1210
Other Parts Discussed in Thread: LM5113,

Hello everyone,

I'm currently designing a power stage for a Class-D amplifier using your gate drivers LMG1210 and LM5113 as well as GaN devices from GaN Systems and EPC.

Selection of the optimum gate resistor is key for a high performance, low-noise design.
For this the values of the internal resistance of the gate driver R_HI and R_LO are needed (as described in SLLA385A www.ti.com/.../slla385a.pdf

I wasn't able to find those elements in the datasheets. Could you please provide values of the internal resistance of the gate driver output?

Thank you very much!

  • Hi Sascha,

    Thanks for reaching out.

    Please refer to Section 6.5 specifically "Gate driver" section where Low-level Output voltage / Iol = 0.16V / 100mA = 1.6-Ohms = Rol AND Roh = High-level Output voltage / 100mA = 3-Ohms.

    Regards,

    -Mamadou