To start the procedure, the ILOAD(MAX), RSNS, RSET, must to be known.
- Determine ILIMIT, usually chose
ILIMIT = ILOAD(MAX) / (1 –
10%).
- Determine RSNS to achieve 50 mV at current limit. For 3-A Type-C load current, choose ILIMIT = 3.3A. RSNS = (0.05 V / 3.3 A) = 15 mΩ.
- Choose RSET = 300 Ω
- According to Equation 7, RLIMIT = 300 / (0.5 × ( 3.3 X 0.015 + 0.0007)) = 11.95 kΩ.
- Choose standard 11.8 kΩ.