ncp5215 ON Semiconductor, ncp5215 Datasheet - Page 12

• Manufacturer Part Number: ncp5215
• Description: Dual Synchronous Buck Controller For Notebook
• Manufacturer: ON Semiconductor

Top: Vo1, CH1 Output Voltage Ripple, (50mV/div)
Middle: Io1, CH1 Output Current, (5A/div)
Bottom: SWN1, CH1 Switching Node Voltage, (10V/div)
Time: 50ms/div
Top: FPWM#, FPWM# Signal, (5V/div)
Middle 1: Vo1, CH1 Output Voltage Ripple, (50mV/div)
Middle 2: iL1, CH1 Inductor Current, (5A/div)
Bottom: SWN1, CH1 Switching Node Voltage, (10V/div)
Time: 50ms/div
Figure 26. On-Line Mode-Changing Operation
Top: Vo1, CH1 Output Voltage Ripple, (50mV/div)
Middle: Io1, CH1 Output Current, (5A/div)
Bottom: SWN1, CH1 Switching Node Voltage, (10V/div)
Time: 20ms/div
Figure 24. Load Transient Response with
Skip-Mode Operation (V
Figure 22. Load Transient Response with
(V
O
FPWM Operation (V
1 = 1.5 V, I
0.1 A-4 A-0.1 A)
I
O
1 = 0 A-4 A-0 A)
Mode-FPWM)
O
1 = 0.2 A, FPWM-Skip
O
1 = 1.5 V, I
O
1 = 1.5 V,
TYPICAL OPERATING CHARACTERISTICS
O
1 =
http://onsemi.com
NCP5215
12
Top: Vo2, CH2 Output Voltage Ripple, (50mV/div)
Middle: Io2, CH2 Output Current, (5A/div)
Bottom: SWN2, CH2 Switching Node Voltage, (10V/div)
Time: 20ms/div
Top: Vo2, CH2 Output Voltage Ripple, (50mV/div)
Middle: Io2, CH2 Output Current, (5A/div)
Bottom: SWN2, CH2 Switching Node Voltage, (10V/div)
Time: 50ms/div
Top: FPWM#, FPWM# Signal, (5V/div)
Middle 1: Vo2, CH2 Output Voltage Ripple, (50mV/div)
Middle 2: iL2, CH2 Inductor Current, (5A/div)
Bottom: SWN2, CH2 Switching Node Voltage, (10V/div)
Time: 50ms/div
Figure 27. On-Line Mode-Changing Operation
Skip-Mode Operation (V
Figure 23. Load Transient Response with
Figure 25. Load Transient Response with
(V
FPWM Operation (V
O
2 = 1.05 V, I
0.1 A-6 A-0.1 A)
Mode-FPWM)
0 A-6 A-0 A)
O
2 = 0.2 A, FPWM-Skip
O
2 = 1.05 V, I
O
2 = 1.05 V, I
O
2 =
O
2 =