SSL8516T datasheet(22/33 Pages) NXP

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SSL8516T

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Product data sheet

Rev. 1 — 5 May 2014

22 of 33

NXP Semiconductors

SSL8516T

Greenchip PFC and flyback controller

Pulse-width modulator PFC

ton(PFC)

PFC on-time

VVINSENSE = 3.3 V; VVOSENSE =2V;

VPFCCOMP =Vclamp(PFCCOMP)

(lower clamp)

3.6

4.7

5.8

s

VVINSENSE =1 V; VVOSENSE =2V;

VPFCCOMP =Vclamp(PFCCOMP)

(lower clamp)

s

Output voltage sensing PFC (VOSENSE pin)

Vth(start)VOSENSE

start threshold voltage

on pin VOSENSE

open-loop

0.45

0.5

0.55

Vth(stop)VOSENSE

threshold stop voltage

on pin VOSENSE

0.35

0.4

0.45

Vhys(VOSENSE)

hysteresis voltage on

pin VOSENSE

Vth(start)VOSENSE  Vth(stop)VOSENSE

100

125

Vreg(VOSENSE)

regulation voltage on

pin VOSENSE

for IO(PFCCOMP) = 0 A

2.475 2.5

2.525 V

VOVP(VOSENSE)

ton =0 s

2.59

2.62

2.65

Iprot(VOSENSE)

protection current on

pin VOSENSE

50

25

5nA

Overcurrent protection PFC (PFCSENSE pin)

Vsense(PFC)max

maximum PFC sense

voltage

V/t = 0 V/s

465

495

525

td(PFCDRIVER)

delay time on pin

PFCDRIVER

VPFCSENSE pulse-stepping 400 mV

around Vsense(PFC)max

-50

-ns

tleb(PFC)

PFC leading edge

blanking time

VPFCSENSE = 0.75 V

230

290

350

Iprot(PFCSENSE)

protection current on

pin PFCSENSE

50

5nA

Soft-start PFC (PFCSENSE pin)

Istart(soft)PFC

PFC soft start current

73

60

47

A

Vstart(soft)PFC

PFC soft start voltage

enabling voltage

0.45

0.5

0.55

Vstop(soft)PFC

PFC soft stop voltage

disabling voltage

0.4

0.45

0.5

Oscillator PFC

fsw(PFC)max

maximum PFC

switching frequency

320

400

480

kHz

toff(PFC)min

minimum PFC off-time secondary stroke

0.8

1.1

1.4

s

Valley switching PFC (PFCAUX pin)

(

V/t)

vrec(PFC)

PFC valley recognition

voltage change with

time

1.7

s

tto(vrec)PFC

PFC valley recognition

time-out time

34.2

5.4

s

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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