ADP3211 Просмотр технического описания (PDF) - ON Semiconductor

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ADP3211

7-Bit, Programmable, Single-Phase, Synchronous Buck Controller

ON Semiconductor 

ADP3211, ADP3211A

TYPICAL PERFORMANCE CHARACTERISTICS

Output Voltage

1

2

EN

PWRGD

3

4

CLKEN

1: 0.5V/div 3: 5V/div 2ms/div

2: 5V/div 4: 5V/div

GPU = 0V

Figure 9. Startup Waveforms CPU Mode

1

Switch Node

Output Voltage

2

Inductor

Current

3

4

1 : 100mV/div

2 : 10V/div

Low Side Gate Drive

3 : 5A/div

4 : 5V/div

4 ms/div

Figure 11. DCM Waveforms, 1 A Load Current

Output Voltage

1

EN

2

PWRGD

3

4

1: 0.5V/div

2: 5V/div

3: 5V/div

4: 5V/div

CLKEN

4ms/div GPU = 5V

Figure 10. Startup Waveforms GPU Mode

1

Switch Node

2

3

Output Voltage

Inductor

Current

4

Low Side Gate Drive

1 : 100mV/div

2 : 10V/div

3 : 5A/div

4 : 5V/div

2 ms/div

Figure 12. CCM Waveforms, 10 A Load Current

1

Switch Node

Output Voltage

2

1 : 50mV/div

2 : 10V/div

40 ms/div

Input = 12V

Output = 1.2V

3A to 15A Step

Figure 13. Load Transient

Output Voltage

1

Switch Node

2

1: 50mV/div

2: 10V/div

40 ms/div

Input = 12V

Output = 1.2V

3A to 15A Step

Figure 14. Load Transient

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