ncp5215 ON Semiconductor, ncp5215 Datasheet - Page 11

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

Top: Vin, Input Voltage Ripple, (100mV/div)
Middle: SWN1, CH1 Switching Node Voltage, (10V/div)
Bottom: SWN2, CH2 Switching Node Voltage, (10V/div)
Time: 2ms/div
Top: EN1, CH1 Enable Signal, (5V/div)
Middle 1: PGOOD1, CH1 Power Good Signal, (5V/div)
Middle 2: SWN1, CH1 Switching Node Voltage, (10V/div)
Bottom: V
Time: 200ms/div
Top: EN1, CH1 Enable Signal, (5V/div)
Middle 1: PGOOD1, CH1 Power Good Signal, (5V/div)
Middle 2: SWN1, CH1 Switching Node Voltage, (10V/div)
Bottom: V
Time: 5ms/div
Figure 20. Powerdown Operation (V
Interleaved Operation (V
Figure 18. Powerup Operation (V
Figure 16. Input Voltage Ripple with
O
O
1, CH1 Output Voltage, (1V/div)
1, CH1 Output Voltage, (1V/div)
V
O
2 = 1.05 V, I
I
O
1 = 0 A, FPWM)
I
O
1 = 4 A)
O
O
1 = 1.5 V, I
2 = 6 A)
TYPICAL OPERATING CHARACTERISTICS
O
1 = 1.5 V,
O
O
1 = 1.5 V,
1 = 4 A,
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NCP5215
11
Top: SWN1, CH1 Switching Node Voltage, (10V/div)
Middle 1: Vo1, CH1 Output Voltage Ripple, (50mV/div)
Middle 2: SWN2, CH2 Switching Node Voltage, (10V/div)
Bottom: Vo2, CH2 Output Voltage Ripple, (50mV/div)
Time: 2ms/div
Top: EN2, CH2 Enable Signal, (5V/div)
Middle 1: PGOOD2, CH2 Power Good Signal, (5V/div)
Middle 2: SWN2, CH2 Switching Node Voltage, (10V/div)
Bottom: V
Time: 200ms/div
Top: EN2, CH2 Enable Signal, (5V/div)
Middle 1: PGOOD2, CH2 Power Good Signal, (5V/div)
Middle 2: SWN2, CH2 Switching Node Voltage, (10V/div)
Bottom: Vo2, CH2 Output Voltage, (1V/div)
Time: 5ms/div
Interleaved Operation (V
Figure 19. Powerup Operation (V
Figure 17. Output Voltage Ripple with
Figure 21. Powerdown Operation
O
(V
2, CH2 Output Voltage, (1V/div)
O
2 = 1.05 V, I
V
O
2 = 1.05 V, I
I
O
2 = 6 A)
O
2 = 0 A, FPWM)
O
O
1 = 1.5 V, I
2 = 6 A
)
O
2 = 1.05 V,
O
1 = 4 A,