MIC2591B 查看數據表（PDF） - Micrel

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MIC2591B

Dual-Slot PCI Express Hot-Plug Controller

Micrel 

MIC2591B

Timing Diagrams

t1

SCL

t4

SDA

Data In

SDA

Data Out

t2

t5

t3

Figure 1. SMBus Timing

Micrel

VIN – VSENSE

VTHFAST

VTHILIMIT

12VGATE

0V

tOFF(12V)

6V

t

Figure 2. 12V Current Limit Response Timing

I

IOUT(AUX)

IAUX(THRESH) Must Trip

May Not Trip

IOUT(AUX)

ILIM(AUX)

0

t

Figure 4. VAUX Current Limit Threshold

VIN – VSENSE

VTHFAST

VTHILIMIT

3VGATE

1V

0V

tOFF(3V)

t

Figure 3. 3V Current Limit Response Timing

ISC(TRAN)

I

IOUT(AUX)

tSC(TRAN)

ILIM(AUX)

O

t

Figure 5. VAUX Current Limit Response Timing

March 2005

11

M9999-033105

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