NCP5252 Datasheet, PDF (10/16 Pages) ON Semiconductor – 2.0 A, 1.0 MHz Integrated Synchronous Buck Regulator with Light Load Efficiency

NCP5252
(V_in = 12 V, I_LOAD = 200 mA, L = 5 mH, C_OUT = 100 mF)
Upper trace: Output ripple voltage, 50 mV/div
Middle trace: Lx pin switching waveform, 5 V/div
Lower trace: Inductor current waveforms, 1 A/div
Time base: 2 ms/div
Figure 17. DCM Switching Waveforms for V_out = 1.2 V
(V_in = 12 V, I_LOAD = 1 A, L = 5 mH, C_OUT = 100 mF)
Upper trace: Output ripple voltage, 50 mV/div
Middle trace: Lx pin switching waveform, 5 V/div
Lower trace: Inductor current waveforms, 1 A/div
Time base: 2 ms/div
Figure 18. CCM Switching Waveforms for V_out = 1.2 V
(V_in = 12 V, I_LOAD = 200 mA, L = 5 mH, C_OUT = 100 mF)
Upper trace: Output ripple voltage, 50 mV/div
Middle trace: Lx pin switching waveform, 5 V/div
Lower trace: Inductor current waveforms, 500 mA/div
Time base: 2 ms/div
Figure 19. DCM Switching Waveforms for V_out = 3.3 V
(V_in = 12 V, I_LOAD = 500 mA, L = 5 mH, C_OUT = 100 mF)
Upper trace: Output ripple voltage, 50 mV/div
Middle trace: Lx pin switching waveform, 5 V/div
Lower trace: Inductor current waveforms, 500 mA/div
Time base: 2 ms/div
Figure 20. CCM Switching Waveforms for V_out = 3.3 V
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