Rainbow-electronics MAX1813 Bedienungsanleitung PDF herunterladen (Seite 10)

MAX1813

Dynamically-Adjustable, Synchronous Step-Down

Controller with Integrated Voltage Positioning

10 ______________________________________________________________________________________

40µs/div

OUTPUT OVERLOAD WAVEFORM

40A

MAX1813 toc18

-100mV

20A

100mV

A. I

OUT

= 0 TO 40A, (0 to 35mΩ), 20A/div

B. V

OUT

= 1.4V, 1V/div

C. VPCS, 200mV/div

ILIM = V

1.4V

µs/div

DYNAMIC TRANSITION

(ZMODE TRANSITION)

MAX1813 toc19

-10A

1.2V

1.3V

A. V

ZMODE

= 0 TO 5V, 5V/div

B. PGOOD, 5V/div

C. INDUCTOR CURRENT, 10A/div

D. V

OUT

= 1.3V TO 1.15V, I

OUT

= 1A, 100mV/div

CODE = V

10A

1.1V

µs/div

DYNAMIC TRANSITION

(SUS TRANSITION)

MAX1813 toc20

-5A

1.3V

-15A

A. V

SUS

= 0 TO 5V, 5V/div

B. PGOOD, 5V/div

C. INDUCTOR CURRENT, 10A/div

D. V

OUT

= 1.3V TO 0.85V, I

OUT

= 1A, 500mV/div

CODE = V

15A

0.85V

Typical Operating Characteristics (continued)

(Circuit from Figure 1, components from Table 2, T

= +25°C, unless otherwise noted.)

20µs/div

LOAD TRANSIENT

(PWM MODE)

20A

MAX1813 toc15

1.41V

1.31V

10A

1.36V

A. I

OUT

= 0.3A TO 22A, 10A/div

B. V

OUT

= 1.4V, 50mV/div

SKP/SDN = FLOAT

µs/div

LOAD TRANSIENT

(SKIP MODE)

20A

MAX1813 toc16

1.41V

1.31V

10A

1.36V

A. I

OUT

= 0.3A TO 22A, 10A/div

B. V

OUT

= 1.4V, 50mV/div

SKP/SDN = V

20µs/div

LOAD TRANSIENT

(VOLTAGE POSITIONING DISABLED)

20A

MAX1813 toc17

1.46V

1.36V

10A

1.41V

A. I

OUT

= 0.3A to 22A, 10A/div

B. V

OUT

= 1.4V, 50mV/div

SKP/SDN = FLOAT

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