Rainbow-electronics MAX1855 Manuel d'utilisateur télécharger pdf (Page 11)

MAX1716/MAX1854/MAX1855

High-Speed, Adjustable, Synchronous Step-Down

Controllers with Integrated Voltage Positioning

______________________________________________________________________________________ 11

20µs/div

20A

10A

A. V

OUT

= 1.6V, 1V/div

B. I

, L = 0.68µH, 10A/div

C. SHORT-CIRCUIT CONTROL, 5V/div

SHORT-CIRCUIT WAVEFORM

MAX1716-30

200µs/div

20A

10A

A. V

OUT

= 1.6V, 1V/div

B. I

, L = 0.68µH, 10A/div

C. V

SHDN

= 0 TO V

, 5V/div

OUT

= 88mΩ

STARTUP WAVEFORM

(18A LOAD)

MAX1716-31

100µs/div

20A

-20A

A. V

OUT

= 1.6V, R

OUT

= 88mΩ, 2V/div

B. I

, L = 0.68µH, 20A/div

C. V

, 5V/div

D. V

SHDN

= V

TO 0, 5V/div

SHUTDOWN WAVEFORM

MAX1716-32

100µs/div

10A

A. V

OUT

= 1.6V, NO LOAD, 1V/div

B. I

, L = 0.68µH, 10A/div

C. V

, 5V/div

D. V

SHDN

= 0 TO V

, 5V/div

STARTUP WAVEFORM

(NO-LOAD)

MAX1716-33

Typical Operating Characteristics (continued)

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

= +25°C, unless otherwise noted.)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 32 33

MAX1716/MAX1854/MAX1855 1

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Rainbow-electronics MAX1855 Manuel d'utilisateur Page 11

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