MAX1717 查看數據表（PDF） - Maxim Integrated

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MAX1717

Dynamically Adjustable, Synchronous Step-Down Controller for Notebook CPUs

Maxim Integrated 

Dynamically Adjustable, Synchronous

Step-Down Controller for Notebook CPUs

Typical Operating Characteristics (continued)

(Circuit of Figure 1, components of Table 1, V+ = +12V, VDD = VCC = SKP/SDN = +5V, VOUT = 1.6V, TA = +25°C, unless otherwise noted.)

STARTUP WAVEFORM

300kHz VOLTAGE POSITIONED,

CIRCUIT 2, PWM MODE,

NO LOAD

A

STARTUP WAVEFORM

300kHz VOLTAGE POSITIONED,

CIRCUIT 2, IOUT =12A

A

DYNAMIC OUTPUT VOLTAGE TRANSITION

A

B

B

B

C

100μs/div

A = VOUT, 1V/div

B = INDUCTOR CURRENT, 10A/div

C = SKP/SDN, 5V/div

DYNAMIC OUTPUT VOLTAGE TRANSITION

A

C

100μs/div

A = VOUT, 1V/div

B = INDUCTOR CURRENT, 10A/div

C = SKP/SDN, 5V/div

DYNAMIC OUTPUT VOLTAGE TRANSITION

A

C

D

50μs/div

300kHz STANDARD APPLICATION, CIRCUIT 1,

PWM MODE, VOUT = 1.35V TO 1.6V, IOUT = 0.3A,

RTIME = 120kΩ

A = VOUT, 200mV/div, AC-COUPLED

B = INDUCTOR CURRENT, 10A/div

C = VGATE, 5V/div

D = A/B, 5V/div

OUTPUT OVERLOAD WAVEFORM

300kHz VOLTAGE POSITIONED, CIRCUIT 2,

PWM MODE

B

B

A

C

D

50μs/div

300kHz STANDARD APPLICATION, CIRCUIT 1,

PWM MODE, VOUT = 1.35V TO 1.6V,

IOUT = 12A, RTIME = 120kΩ

A = VOUT, 200mV/div, AC-COUPLED

B = INDUCTOR CURRENT, 10A/div

C = VGATE, 5V/div

D = A/B, 5V/div

C

D

20μs/div

A = VOUT, 200mV/div, AC-COUPLED

B = INDUCTOR CURRENT, 10A/div

C = VGATE, 5V/div

D = A/B, 5V/div

1000kHz +5V, CIRCUIT 4,

PWM MODE, VOUT = 1.35V TO 1.6V,

IOUT = 0.3A, RTIME = 51kΩ

B

40μs/div

A = VOUT, 500mV/div

B = INDUCTOR CURRENT, 10A/div

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