NCP5387MNR2G datasheet(11/37 Pages) ONSEMI

Part #	NCP5387MNR2G

Description	2/3/4 Phase Controller for CPU Applications

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP5387

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11

ELECTRICAL CHARACTERISTICS

(Unless otherwise stated: 0

°C < TA < 85°C; 4.75 V < VCC < 5.25 V; All DAC Codes; CVCC = 0.1 mF)

Parameter

Units

Max

Typ

Min

Test Conditions

Modulators (PWM Comparators)

Minimum Pulse Width (Note 3)

Fs = 800 kHz

−

30

40

ns

Propagation Delay (Note 3)

−

20

−

ns

Magnitude of the PWM Ramp

−

1.0

−

V

0% Duty Cycle

COMP voltage when the PWM outputs

remain LOW

−

1.3

−

V

100% Duty Cycle

COMP voltage when the PWM outputs

remain HIGH

−

2.3

−

V

PWM Linear Duty Cycle (Note 3)

−

90

−

%

PWM Phase Angle Error

−15

−

15

°

VR_RDY (Power Good) Output

VR_RDY Saturation Voltage

IVR_RDY = 10 mA

−

0.4

V

VR_RDY Rise Time

External pullup of 680 k

W to 1.25 V, CL =

45 pF,

DVo = 10% to 90%

−

150

ns

VR_RDY High – Output Leakage Current

VR_RDY = 5.0 V

−

1.0

mA

VR_RDY Upper Threshold Voltage

VCORE increasing, DAC = 1.3 V

−

300

−

mV

below

DAC

VR_RDY Lower Threshold Voltage

VCORE decreasing, DAC = 1.3 V

−

350

−

mV

below

DAC

VR_RDY Rising Delay

VCORE increasing

−

3

ms

VR_RDY Falling Delay

VCORE decreasing

−

250

ns

PWM Outputs

Output High Voltage

Sourcing 500

mA

3.0

−

VCC

V

Output Low Voltage

Sinking 500

mA

−

0.15

V

Rise Time

CL = 20 pF, DVo = 0.3 to 2.0 V

−

20

ns

Fall Time

CL = 20 pF, DVo = Vmax to 0.7 V

−

20

ns

Tri−State Output Leakage

Gx = 2.5 V, x = 1 − 4

−

1.5

mA

Output Impedance − Sourcing

Max Resistance to VCC

−

320

−

W

Output Impedance − Sinking

Max Resistance to GND

−

140

−

W

2/3/4 Phase Detection

Gate Pin Source Current

−

84

−

mA

Gate Pin Threshold Voltage

−

225

−

mV

Phase Detect Timer

−

20

−

ms

DRVON

Output High Voltage

Sourcing 500

mA

3.0

−

VCC

V

Output Low Voltage

Sinking 500

mA

−

0.7

mV

Rise Time

CL (PCB) = 20 pF, DVo = 10% to 90%

−

24

30

ns

Fall Time

CL = 20 pF, DVo = 10% to 90%

−

11

20

ns

Internal Pulldown Resistance

−

70

−

k

W

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