Rainbow-electronics MAX1545 Bedienungsanleitung PDF herunterladen (Seite 11)

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

= 12V, V

= V

= 5V, SHDN = SKIP = V

, D0–D4 set for 1.5V (SUS = GND), S0–S1 set

for 1V (SUS = V

), OFS = GND, T

= +25°C, unless otherwise specified.)

MAX1519/MAX1545

Dual-Phase, Quick-PWM Controllers for

Programmable CPU Core Power Supplies

______________________________________________________________________________________ 11

SOFT-START

MAX1519 toc19

10A

1.5V

100

s/div

A. SHDN, 5V/div

B. 1.5V OUTPUT, 1V/div

C. I

, 10A/div

D. I

, 10A/div

LOAD

= 75m

Ω

, R

TIME

= 64.9k

Ω

SOFT-SHUTDOWN

MAX1519 toc20

10A

1.5V

200

s/div

A. SHDN, 5V/div

B. 1.5V OUTPUT, 1V/div

C. I

, 10A/div

D. I

, 10A/div

LOAD

= 75m

Ω

, R

TIME

= 64.9k

Ω

1.50V LOAD TRANSIENT

(10A TO 50A LOAD)

MAX1519 toc21

50A

20A

10A

1.5V

s/div

A. LOAD CURRENT, (I

LOAD

= 10A TO 50A), 50A/div

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

C. I

, 10A/div

D. I

, 10A/div

POWER-UP SEQUENCE

MAX1519 toc18

1ms/div

A. SHDN, 5V/div

B. 1.5V OUTPUT, 1V/div

C. VROK, 5V/div

TIME

= 64.9k

Ω

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 42 43

MAX1519/MAX1545 1

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