UCC28051PE4 datasheet(4/32 Pages) TI1

Part #	UCC28051PE4

Description	TRANSITION MODE PFC CONTROLLER

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Manufacturer	TI1 [Texas Instruments]

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UCC28050, UCC28051

UCC38050, UCC38051

SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009

4

www.ti.com

ELECTRICAL CHARACTERISTICS

TA = 0_C to 70_C for the UCC3805x, –40_C to 105_C for the UCC2805x, TA = TJ, VCC = 12 V.

supply

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

VCC operating voltage

18

V

Shunt voltage

IVCC = 25 mA

18

19

20

V

Supply current, off

VCC = VCC turn−on threshold –300 mV

75

125

μA

Supply current, disabled

VO_SNS = 0.5 V

2

4

Supply current, on

75 kHz,

CL = 0 nF

4

6

mA

Supply current, dynamic operating

75 kHz,

CL = 1 nF

5

7

mA

UVLO

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

V

turn on threshold

UCCx8050

15.4

15.8

16.4

VCC turn-on threshold

UCCx8051

12.0

12.5

13.0

VCC turn-off threshold

9.4

9.7

10.0

V

UVLO hysteresis

UCCx8050

5.8

6.3

6.8

V

UVLO hysteresis

UCCx8051

2.3

2.8

3.3

voltage amplifier (VO_SNS)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Input voltage (V

)

UCC3805x

2.46

2.50

2.54

V

Input voltage (VREF)

UCC2805x

2.45

2.50

2.55

V

Input bias current

0.5

μA

VCOMP high

VO_SNS = 2.1 V

4.5

5.5

V

VCOMP low

VO_SNS = 2.55 V

1.80

2.45

V

gM

TJ = 25 _C,

VCOMP= 3.5 V

60

90

130

μS

Source current

UCCx8050

VO_SNS = 2.1 V,

VCOMP= 3.5 V

−0.2

−1.0

mA

Source current

UCCx8051

VO_SNS = 2.1 V,

VCOMP= 2.5 V

−200

−300

−400

μA

Sink current

VO_SNS = 2.7 V

VCOMP= 3.5 V

0.2

1.0

mA

over voltage protection / enable

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Overvoltage reference

UCCx8050

VREF +

0.165

VREF +

0.190

VREF +

0.210

V

Overvoltage reference

UCCx8051

VREF +

0.150

VREF +

0.180

VREF +

0.210

V

Hysteresis

UCCx8050

175

200

225

mV

Hysteresis

UCCx8051

150

180

210

mV

Enable threshold

UCCx8050

0.62

0.67

0.72

V

Enable threshold

UCCx8051

0.18

0.23

0.28

V

Enable hysteresis

0.05

0.10

0.20

V

multiplier

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Multiplier gain constant (k)

VMULTIN = 0.5 V,

COMP = 3.5 V

0.43

0.65

0.87

1/V

Dynamic input range, VMULTIN INPUT

0 to 2.5

0 to 3.5

V

Dynamic input range, COMP INPUT

2.5 to 3.8

2.5 to 4.0

V

Input bias current, MULTIN

0.1

1.0

μA

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