NCP5314FTR2G datasheet(7/29 Pages) ONSEMI

Part #	NCP5314FTR2G

Description	Two/Three/Four?뭁hase Buck CPU Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP5314

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ELECTRICAL CHARACTERISTICS (continued) (0

°C < TA < 70°C; VCC = 12 V; CGATEx = 100 pF, CCOMP = 0.01 μF,

CSS = 0.1 μF, CVCC = 0.1 μF, RROSC = 32.4 kΩ, V(ILIM) = 1.0 V, DAC Code 010100; unless otherwise noted)

Characteristic

Unit

Max

Typ

Min

Test Conditions

GATES

High Voltage

Measure GATEx, IGATEx = 1.0 mA

−

2.70

−

V

Low Voltage

Measure GATEx, IGATEx = 1.0 mA

−

0.5

0.7

V

Rise Time GATE

0.8 V < GATEx < 2.0 V, VCC = 10 V

−

5.0

10

ns

Fall Time GATE

2.0 V > GATEx > 0.8 V, VCC = 10 V

−

5.0

10

ns

Oscillator

Switching Frequency

ROSC = 32.4 k, 3 Phase (Note 2)

ROSC = 32.4 k, 4 Phase (Note 2)

−15%

880

660

+15%

kHz

ROSC Voltage

−

0.95

1.02

1.05

V

Phase Delay, 3 Phases

VCC = CS4P = CS4N

−

120

−

deg

Phase Delay, 4 Phases

−

90

−

deg

Phase Disable Threshold

VCC − (CS4P = CS4N)

500

−

mV

Adaptive Voltage Positioning

VDRP Output Voltage to DACOUT Offset

CSxP = CSxN, VFB = COMP,

Measure VDRP − COMP

−15

−

15

mV

Current Sense Amplifier to VDRP Gain

CSxP − CSxN = 80 mV, VFB = COMP,

Measure VDRP − COMP

2.25

2.54

2.75

V/V

VDRP Source Current

−

1.0

7.0

14

mA

VDRP Sink Current

−

0.2

0.4

0.6

mA

Soft−Start

Charge Current

−

30

44

50

μA

Discharge Current

−

90

120

150

μA

COMP Pull−Down Current

−

0.2

0.9

2.1

mA

Current Sensing and Overcurrent Protection

CSxP Input Bias Current

CSxN = CSxP = 0 V

−

0.1

1.0

μA

CSxN Input Bias Current

CSxN = CSxP = 0 V

−

0.1

1.0

μA

Current Sense Amp to PWM Gain

CSxN = 0 V, CSxP = 80 mV, Measure

V(COMP) when GATEx switches high

−

3.1

−

V/V

Current Sense Amp to PWM Bandwidth

(Note 2)

−

7.0

−

MHz

Current Sense Amp to ILIM Gain

IO/(CSxP − CSxN), ILIM = 0.6 V,

GATEx not switching

2.85

3.30

3.65

V/V

Current Sense Amp to ILIM Bandwidth

(Note 2)

−

1.0

−

MHz

Current Limit Filter Slew Rate

(Note 2)

2.0

5.0

13

mV/

ms

ILIM Input Bias Current

ILIM = 0 V

−

0.1

1.0

μA

Pulse−by−Pulse Current Limit Threshold

Voltage

V(CSxP) − V(CSxN)

80

90

110

mV

Current Sense Common Mode Input

Range

(Note 2)

0

−

2.0

V

General Electrical Specifications

VCC Operating Current

COMP = 0.3 V (no switching)

−

27

35

mA

UVLO Start Threshold

SS charging, GATEx switching

8.5

9.0

9.5

V

UVLO Stop Threshold

GATEx not switching, SS & COMP

discharging

7.5

8.0

8.5

V

UVLO Hysteresis

Start − Stop

0.8

1.0

1.2

V

2. Guaranteed by design, not tested in production.

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