TEA1742T datasheet(11/17 Pages) PHILIPS

部件名	TEA1742T

功能描述	GreenChip PFC controller

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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11 / 17 page

TEA1742T_1

Objective data sheet

Rev. 01 — 10 February 2009

11 of 17

NXP Semiconductors

TEA1742T

GreenChip PFC controller

Ipu(VINSENSE)

pull-up current on pin

VINSENSE

active after Vstop(VINSENSE) is

detected

−55

−47

−40

µA

Vmvc(VINSENSE)max maximum mains voltage

compensation voltage on pin

VINSENSE

4.0

-

V

II(VINSENSE)

input current on pin VINSENSE VINSENSE > Vstop(VINSENSE) after

Vstart(VINSENSE) is detected

5

33

100

nA

Vbst(dual)

dual boost voltage

current switch-over point

-

2.2

-

V

switch-over region

-

200

-

mV

Loop compensation PFC (pin PFCCOMP)

gm

transconductance

VVOSENSE to IO(PFCCOMP)

60

80

100

µA/V

IO(PFCCOMP)

output current on pin

PFCCOMP

VVOSENSE = 2.0V

33

39

45

µA

VVOSENSE = 3.3V

−45

−39

−33

µA

Vclamp(PFCCOMP)

clamp voltage on pin

PFCCOMP

Low power mode, PFC off, lower

clamp voltage

[1] 2.5

2.7

2.9

V

Upper clamp voltage

[1] -

3.9

-

V

Vton(PFCCOMP)zero

zero on-time voltage on pin

PFCCOMP

3.4

3.5

3.6

V

Vton(PFCCOMP)max

maximum on-time voltage on

pin PFCCOMP

1.20

1.25

1.30

V

Pulse width modulator PFC

ton(PFC)

PFC on-time

VVINSENSE = 3.3 V, VPFCCOMP =

Vton(PFCCOMP)max

3.6

4.5

5.0

µs

VVINSENSE = 0.9 V, VPFCCOMP =

Vton(PFCCOMP)max

30

40

53

µs

Output voltage sensing PFC (pin VOSENSE)

Vth(ol)(VOSENSE)

open-loop threshold voltage on

pin VOSENSE

-

1.15

-

V

Vreg(VOSENSE)

regulation voltage on pin

VOSENSE

for IO(PFCCOMP) = 0

2.475

2.500

2.525

V

Vovp(VOSENSE)

overvoltage protection voltage

on pin VOSENSE

2.60

2.63

2.67

V

Ibst(dual)

dual boost current

VVINSENSE <Vbst(dual) or VVOSENSE

< 2.1 V

--8

-

µA

VVINSENSE > Vbst(dual)

-

-30

-

nA

Overcurrent protection PFC (pin PFCSENSE)

Vsense(PFC)max

maximum PFC sense voltage

∆V/∆t = 50 mV/µs

0.49

0.52

0.55

V

∆V/∆t = 200 mV/µs

0.51

0.54

0.57

V

tleb(PFC)

PFC leading edge blanking

time

250

310

370

ns

Iprot(PFCSENSE)

protection current on pin

PFCSENSE

−50

-

−5nA

Table 5.

Characteristics …continued

Tamb =25 °C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when ﬂowing into

the IC; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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