LTC1643H Просмотр технического описания (PDF) - Linear Technology

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LTC1643H

PCI-Bus Hot Swap Controller

Linear Technology 

LTC1643L/LTC1643L-1/LTC1643H

APPLICATIONS INFORMATION

ON

10V/DIV

ON

10V/DIV

TIMER

10V/DIV

TIMER

10V/DIV

GATE

10V/DIV

12VOUT

5V/DIV

3VOUT

5V/DIV

5VOUT

5V/DIV

VEEOUT

5V/DIV

GATE

10V/DIV

12VOUT

5V/DIV

5VOUT

5V/DIV

3VOUT

5V/DIV

VEEOUT

5V/DIV

FAULT

10V/DIV

PWRGD

10V/DIV

FAULT

10V/DIV

PWRGD

10V/DIV

20ms/DIV

1643 F04

Figure 4. Power-Up into a Short on 3.3V Output

20ms/DIV

1643 F05

Figure 5. Short Circuit on 5V Followed by Circuit Breaker Reset

5V

R2

Q2

1 0.005Ω 2 IRF7413

3.3V

3

4

C2

1µF

R3 R5

20Ω 10Ω

R1

Q1

1 0.007Ω 2 IRF7413

3

4

R4 R6

20Ω 10Ω

C3

1µF

R7

100Ω

9

10

11

3

13

12

3VIN 3VSENSE GATE 3VOUT 5VIN 5VSENSE

14

5VOUT

5V

5A

3.3V

7.6A

C1

0.047µF

LTC1643L

1643 F06

Figure 6. Delay in the Current Limit Loop

12

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