TPS54620 Current Limit J. Tucker 5 June, 2018

12 V input, 5 V @ 6A Output PH Vout Vin = 12 V VPH less than Vin VPH decreases during ON time (sourcing current) PH Vout Body diode conduction during dead time

12 V input, 5 V @ 10A Output PH Vout Vin = 12 V Peak current limit reached here PH Vout Body diode conduction during dead time Vout decreases above current limit Duty cycle decreases as load current increase (peak current limit reduces on time)

12 V input, 5 V @ 11A Output PH Vout Vin = 12 V Peak current limit reached earlier in the cycle PH Vout Body diode conduction during dead time Vout decreases further as current increases Duty cycle decreases further