MAX1907A 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1907A

Quick-PWM Master Controllers for Voltage Positioned CPU Core Power Supplies (IMVP-IV)

Maxim Integrated 

Quick-PWM Master Controllers for Voltage-

Positioned CPU Core Power Supplies (IMVP-IV)

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V+ = 12V, VCC = VDD = 5V, B0–B2 set to 1.276V, S0–S2 set to 0.748V.)

VPS AMPLIFIER OFFSET VOLTAGE

vs. COMMON-MODE VOLTAGE

180

160

0

140

120

100

80

0

60

0

40

VPS AMPLIFIER

20

DISABLED

0

0

0

1

2

3

4

5

COMMON-MODE VOLTAGE (V)

POWER-UP SEQUENCE

(HIGHEST FREQUENCY)

MAX1907A/81A toc20

VBOOT

A

0

VID

B

0

C

0

D

0

100μs/div

A. VSHDN = 0 to 5V, 5V/div

B. VOUT = 0 to 1.436V, 500mV/div

C. DDO, 5V/div

D. CLKEN, 5V/div

POWER-UP SEQUENCE

(LOWEST FREQUENCY)

MAX1907A/81A toc21

VBOOT

A

VID

B

C

D

100μs/div

A. VSHDN = 0 to 5V, 5V/div

B. VOUT = 0 to 0.844V, 500mV/div

C. DDO, 5V/div

D. CLKEN, 5V/div

NO LOAD

SOFT-START

MAX1907A/81A toc22

0

VBOOT

A

0

VID

B

0

0

0

C

0

D

0

0

100μs/div

A. VSHDN = 0 to 5V, 5V/div

B. VOUT = 0 to 0.844V, 500mV/div

C. ILM, 10A/div

D. ILS, 10A/div

80mΩ LOAD

IMPVOK DELAY

MAX1907A/81A toc23

A

VBOOT

0

1.436V

B

0

0

C

0

D

0

1ms/div

A. VSHDN = 0 to 5V, 5V/div

B. VOUT = 0 to 0.844V, 500mV/div

C. IMPVOK 5V/div

D. CLKEN, 5V/div

SHUTDOWN SEQUENCE

MAX1907A/81A toc24

A

B

C

D

E

100μs/div

A. VSHDN = 0 to 5V, 5V/div

B. VOUT = 1.436V to 0, 1V/div

C. IMPVOK 5V/div

D. CLKEN, 5V/div

E. DDO, 5V/div

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