ADP3212 Просмотр технического описания (PDF) - ON Semiconductor

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ADP3212

7-Bit, Programmable, 3-Phase, Mobile CPU Synchronous Buck Controller

ON Semiconductor 

ADP3212, NCP3218, NCP3218G

TYPICAL PERFORMANCE CHARACTERISTICS

VVID = 1.5 V, TA = 20°C to 100°C, unless otherwise noted.

400

350

300

VARFREQ = 0 V

1000

VID = 1.4125 V

VID = 1.2125 V

250

VARFREQ = 5 V

200

VID = 1.1 V

150

VID = 0.8125 V

100

50

0

0.25 0.50

RT = 187 kW

2 Phase Mode

0.75

1.00

1.25

1.50

VID OUTPUT VOLTAGE (V)

Figure 6. Switching Frequency vs. VID Output

Voltage in PWM Mode

VID = 0.6125 V

100

10

100

1000

Rt RESISTANCE (kW)

Figure 7. Per Phase Switching Frequency vs.

RT Resistance

Output Voltage

Output Voltage

1

2

3

4

1: 0.5 V/div

2: 2 V/div

3: 5 V/div

4: 5 V/div

PWRGD

CLKEN

1 ms/div

EN

GPU Mode

Figure 8. Startup in GPU Mode

1

PWRGD

2

3

4

1: 0.5 V/div

2: 2 V/div

CLKEN

3: 5 V/div

4: 5 V/div

EN

4 ms/div

CPU Mode

Figure 9. Startup in CPU Mode

Output Voltage

1

PWRGD

2

EN

3

4

1: 0.5 V/div

2: 2 V/div

3: 2 V/div

4: 2 V/div

CLKEN

200 ms/div 1 A Load

Figure 10. Shutdown

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