NCP1653EVB【PDF 4/19 页】BOARD EVAL FOR NCP1653

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NCP1653, NCP1653A

ELECTRICAL CHARACTERISTICS (For typical values T J = 25 ° C. For min/max values, T J = ? 40 ° C to +125 ° C, V CC = 15 V,

I FB = 100 m A, I vac = 30 m A, I S = 0 m A, unless otherwise specified)

Characteristics

Pin

Symbol

Min

Typ

Max

Unit

OSCILLATOR

Switching Frequency

Maximum Duty Cycle (V M = 0 V) (Note 3)

NCP1653

NCP1653A

7

7

f SW

D max

90

60.3

94

102

67

?

110

73.7

?

kHz

%

GATE DRIVE

Gate Drive Resistor

7

Output High and Draw 100 mA out of Drv pin (I source = 100 mA)

Output Low and Insert 100 mA into Drv pin (I sink = 100 mA)

R OH

R OL

5.0

2.0

9.0

6.6

20

18

W

W

Gate Drive Rise Time from 1.5 V to 13.5 V (Drv = 2.2 nF to Gnd)

Gate Drive Fall Time from 13.5 V to 1.5 V (Drv = 2.2 nF to Gnd)

7

7

t r

t f

?

?

88

61.5

?

?

ns

ns

FEEDBACK / OVERVOLTAGE PROTECTION / UNDERVOLTAGE PROTECTION

Reference Current (V M = 3 V)

Regulation Block Ratio

Vcontrol Pin Internal Resistor

Maximum Control Voltage (I FB = 100 m A)

Maximum Control Current (I control(max) = I ref / 2)

Feedback Pin Voltage (I FB = 100 m A)

Feedback Pin Voltage (I FB = 200 m A)

1

1

2

2

2

1

I ref

I regL /I ref

R control

V control(max)

I control(max)

V FB1

192

95

?

?

?

1.0

1.3

204

96

300

2.4

100

1.5

1.8

208

98

?

?

?

1.9

2.2

m A

%

k W

V

m A

V

V

Overvoltage Protection

1

OVP Ratio

Current Threshold

Propagation Delay

I OVP /I ref

I OVP

t OVP

104

?

?

107

214

500

?

230

?

%

m A

ns

Undervoltage Protection (V M = 3 V)

1

UVP Activate Threshold Ratio

UVP Deactivate Threshold Ratio

UVP Lockout Hysteresis

Propagation Delay

I UVP(on) /I ref

I UVP(off) /I ref

I UVP(H)

t UVP

4.0

7.0

4.0

?

8.0

12

8.0

500

15

20

?

?

%

%

m A

ns

CURRENT SENSE

Current Sense Pin Offset Voltage (I S = 100 m A)

Overcurrent Protection Threshold (V M = 1 V)

4

4

V S

I S(OCP)

0

185

10

200

30

215

mV

m A

OVERPOWER LIMITATION

Input Voltage Sense Pin Internal Resistor

Over Power Limitation Threshold

Sense Current Threshold (I vac = 30 m A, V M = 3 V)

Sense Current Threshold (I vac = 100 m A, V M = 3 V)

4

3 ? 4

4

R vac(int)

I S × I vac

I S(OPL1)

I S(OPL2)

?

?

80

24

12

3.0

100

32

?

?

140

48

k W

nA 2

m A

m A

CURRENT MODULATION

PWM Comparator Reference Voltage

Multiplier Current (V control = V control(max) , I vac = 30 m A, I S = 25 m A)

Multiplier Current (V control = V control(max) , I vac = 30 m A, I S = 75 m A)

Multiplier Current (V control = V control(max) / 10, I vac = 30 m A, I S = 25 m A)

Multiplier Current (V control = V control(max) / 10, I vac = 30 m A, I S = 75 m A)

5

5

V ref

I M1

I M2

I M3

I M4

2.25

1.0

3.2

10

30

2.62

2.85

9.5

35

103.5

2.75

5.8

18

58

180

V

m A

m A

m A

m A

THERMAL SHUTDOWN

Thermal Shutdown Threshold (Note 2)

Thermal Shutdown Hysteresis

?

?

T SD

?

150

?

?

30

?

?

° C

° C

2. Guaranteed by design.

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