MAX1519 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1519

Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies

Maxim Integrated 

Dual-Phase, Quick-PWM Controllers for

Programmable CPU Core Power Supplies

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VIN = 12V, VCC = VDD = 5V, SHDN = SKIP = VCC, D0–D4 set for 1.5V (SUS = GND), S0–S1 set

for 1V (SUS = VCC), OFS = GND, TA = +25°C, unless otherwise specified.)

POWER-UP SEQUENCE

MAX1519 toc18

5V

A

0V

2V

1V

B

0V

5V

C

0V

1ms/div

A. SHDN, 5V/div

B. 1.5V OUTPUT, 1V/div

C. VROK, 5V/div

RTIME = 64.9kΩ

SOFT-START

MAX1519 toc19

5V

A

0V

1.5V

B

0V

10A

C

0A

D

0A

100μs/div

A. SHDN, 5V/div

B. 1.5V OUTPUT, 1V/div

C. IL1, 10A/div

D. IL2, 10A/div

RLOAD = 75mΩ, RTIME = 64.9kΩ

SOFT-SHUTDOWN

MAX1519 toc20

5V

A

0V

1.5V

B

0V

10A

C

10A

0A

D

200μs/div

A. SHDN, 5V/div

B. 1.5V OUTPUT, 1V/div

C. IL1, 10A/div

D. IL2, 10A/div

RLOAD = 75mΩ, RTIME = 64.9kΩ

1.50V LOAD TRANSIENT

(10A TO 50A LOAD)

MAX1519 toc21

50A

A

10A

1.5V

B

20A

20A

0A

C

0A

D

20μs/div

A. LOAD CURRENT, (ILOAD = 10A TO 50A), 50A/div

B. OUTPUT VOLTAGE (1.5V NO LOAD), 100mV/div

C. IL1, 10A/div

D. IL2, 10A/div

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