Tool/software:
Hi team,
My customer would like to do the short circuit test (Short the SW output to the Power), below is their questions, could you please help check? Thanks.
1. Could you please check the Max value of V(CSP-CSN)?
2. Could you provide the specs for CSP and CSN internal clamp diodes?
3.Can the UDIM pin be connected directly to the VIN via a resistor without resistance division?
Regards,
Ivy
Hello Ivy,
1) and 3) are clearly shown in the datasheet. So yes you can tie UDIM directly to Vin or you could tie it to Vcc as an alternative. Why don't they want to use the UVLO feature? Is it just cost?
2. We do not have detailed specifications. As long as the voltages are met when using the external schottky diode then that means it is fine. You need to select that schottky so that it appropriately bypasses the internal diode during the fault condition such that you don't violate abs max of those pins.
Hi Fhoude,
Thanks for your comments.
I would like to double check one spec with you. According the datasheet, the absolute maximum value of V(CSP-CSN) is -0.3 to 0.3mV, but the recommended operating conditions of V(CSP-CSN) is >8mV, is it a typo? Or my understanding is wrong? Theoretically, the recommended range should be smaller than the absolute range. Thanks.
Regards,
Ivy
