ISL6322 查看數據表（PDF） - Intersil

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ISL6322

Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10, VR11, and AMD Applications

Intersil 

ISL6322

Electrical Specifications Recommended Operating Conditions, Unless Otherwise Specified. (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNITS

REFERENCE AND DAC

System Accuracy (1.000V to 1.600V)

-0.5

0.5

%

System Accuracy (0.600V to 1.000V)

-1.0

1.0

%

System Accuracy (0.375V - 0.600V)

-2.0

2.0

%

DAC Input Low Voltage (VR10, VR11)

0.4

V

DAC Input High Voltage (VR10, VR11)

0.8

V

DAC Input Low Voltage (AMD)

0.6

V

DAC Input High Voltage (AMD)

1.0

V

PIN-ADJUSTABLE OFFSET

OFS Sink Current Accuracy (Negative Offset)

OFS Source Current Accuracy (Positive Offset)

ERROR AMPLIFIER

ROFS = 10kΩ from OFS to GND

ROFS = 30kΩ from OFS to VCC

37.0

40.0

43.0 μA

50.5

53.5

56.5 μA

DC Gain

Gain-Bandwidth Product

Slew Rate

Maximum Output Voltage

RL = 10k to ground, (Note 3)

CL = 100pF, RL = 10k to ground, (Note 3)

CL = 100pF, Load = ±400μA, (Note 3)

Load = 1mA

96

20

8

3.90

4.20

dB

MHz

V/μs

V

Minimum Output Voltage

Load = -1mA

1.30

1.5

V

SOFT-START RAMP

Soft-Start Ramp Rate

VR10/VR11, RS = 100kΩ

AMD

1.563

2.063

mV/µs

mV/µs

Adjustment Range of Soft-Start Ramp Rate (Note 3)

0.625

6.25 mV/µs

PWM OUTPUT

PWM Output Voltage LOW Threshold

Iload = ±500μA

0.5

V

PWM Output Voltage HIGH Threshold

Iload = ±500μA

4.5

V

CURRENT SENSING

Current Sense Resistance, RISEN

Sensed Current Tolerance

T = +25°C

ISEN1+ = ISEN2+ = ISEN3+ = ISEN4+ = 80μA

297

300

303

Ω

76

80

84

μA

OVERCURRENT PROTECTION

Overcurrent Trip Level - Average Channel

Normal operation

110

125

140

μA

Dynamic VID change

143

163

183

μA

Overcurrent Trip Level - Individual Channel

Normal operation

150

177

204

μA

Dynamic VID change (Note 3)

209.4

238

266.6 μA

PROTECTION

Undervoltage Threshold

VSEN falling

55

60

65 %VID

Undervoltage Hysteresis

VSEN rising

10

%VID

Overvoltage Threshold During Soft-Start

VR10/VR11

1.24

1.28

1.32

V

AMD

2.13

2.20

2.27

V

Overvoltage Threshold (Default)

VSEN rising

VDAC + VDAC + VDAC + V

225mV 250mV 275mV

Overvoltage Threshold (Alternate)

VSEN rising

VDAC + VDAC + VDAC + V

150mV 175mV 200mV

8

FN6328.1

February 15, 2007

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