Tool/software:
Hello All,
I would like to know the following parameters of UCC57108-Q1 which are missing in the datasheet,
1. Frequency of operation
2. Maximum Isolation voltage
3. Insulation resistance
4. Power dissipation
Can you have a reply to this query. Help me with the same please.
Hi Ans,
1. The frequency of operation is actually dependent on many variables, including load, external gate resistance, supply range, and package type.
Here is a calculator that you can use to calculate the maximum switching frequency for a low-side gate driver: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1240974/faq-ucc27624-q1-how-to-calculate-the-max-operating-frequency-of-a-low-side-gate-driver
2. This is a non-isolated gate driver, so there's no built-in isolation.
3. If I understand your question correctly, you can check the insulation resistance between two nodes using a multimeter.
4. The maximum power dissipation of a gate driver can be calculated with this equation: Pd_max = (Tj_max - Ta) / R_θJA
For the UCC57108-Q1, the Tj_max is 150°C and R_θJA is 126.4°C/W. Assuming Ta = 25°C, the maximum power dissipation would be 0.9889W. However, keep in mind that this is dependent on your ambient temperature.
If you're asking about general power dissipation for a gate driver, you can calculate that with this equation: Pd = Vdd * Qc * fsw
5. The pricing for the UCC57108-Q1 can be found on the product page:
Thanks,
Rubas
