SLVSGL6A July 2022 – December 2022 TPS1HC30-Q1
PRODUCTION DATA
To keep maximum voltage on the SNS pin at an acceptable range for the system, use the following equation to calculate the RSNS. To achieve better current sense accuracy. A 1% accuracy or better resistor is preferred.
Parameter |
Value |
---|---|
VDIAG_EN |
5 V |
ILOAD,max |
6 A |
ILOAD,min |
20 mA |
VADC,min |
5 mV |
VHR |
1 V |
Having the maximum SNS voltage scale with the DIAG_EN voltage removes the need for a Zener diode on the SNS pin going to the ADC.
To set the programmable current limit value at 7 A, use the following equation to calculate the RLIM.
TI recommends RPROT = 5 kΩ to ensure the current going into the digital pins (EN, DIAG_EN, LATCH) is limited.
TI recommends a 1-kΩ resistor and 200-V, 0.2-A diode (BAS21 for example) for the GND network.