SSL4120T datasheet(36/47 Pages) NXP

36 / 47 page

SSL4120T

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Objective data sheet

Rev. 1 — 21 June 2012

36 of 47

NXP Semiconductors

SSL4120T

Resonant power supply control IC with PFC

PFC demagnetization sensing (pin SNSAUXPFC)

Vdemag(SNSAUXPFC)

demagnetization voltage on pin

SNSAUXPFC

−150 −100 −50

tto(mag)

magnetization time-out time

μs

Iprot(SNSAUXPFC)

protection current on pin

SNSAUXPFC

VSNSAUXPFC =50 mV

−75

−33

PFC valley sensing (pin SNSAUXPFC)

(dV/dt)vrec(min)

minimum valley recognition rate of

voltage change

1.7

μs

tslope(vrec)min

minimum valley recognition slope

time

VSNSAUXPFC =1 Vpp

[4] -

300

demagnetization to

ΔV/Δt=0 [5] --

td(val-dem)max

maximum valley-to-demag delay

time

200

tto(vrec)

valley recognition time-out time

μs

PFC soft start (pin SNSCURPFC)

Ich(ss)(PFC)

PFC soft-start charge current

−60

μA

Vclamp(ss)(PFC)

PFC soft-start clamp voltage

[1] 0.46

0.5

0.54

Vstop(ss)(PFC)

PFC soft-start stop voltage

[1] -0.45

Rss(PFC)

PFC soft-start resistor

PFC overcurrent sensing (pin SNSCURPFC)

Vocr(PFC)

PFC overcurrent regulation voltage

dV/dt = 50 mV/

μs

0.49

0.52

0.55

dV/dt = 200 mV/

μs

0.51

0.54

0.57

tleb(PFC)

leading edge blanking time

250

310

370

Iprot(SNSCURPFC)

protection current on pin

SNSCURPFC

−50

−33

PFC mains voltage sensing and clamp (pin SNSMAINS)

Vstart(SNSMAINS)

start voltage on pin SNSMAINS

[1] 1.11

1.15

1.19

Vuvp(SNSMAINS)

undervoltage protection voltage on

pin SNSMAINS

[1] 0.84

0.89

0.94

Vpu(SNSMAINS)

pull-up voltage on pin SNSMAINS

UVP-mains active

[1] -1.05

Ipu(SNSMAINS)

maximum clamp current

UVP-mains active

−42

−35

μA

Iprot(SNSMAINS)

Protection current on pin

SNSMAINS

VSNSMAINS >Vuvp(SNSMAINS)

100

PFC boost voltage protection sensing, SCP/UVP/OVP boost (pin SNSBOOST)

Vscp(SNSBOOST)

short-circuit protection voltage on

pin SNSBOOST

0.35

0.4

0.45

Vstart(SNSBOOST)

start voltage on pin SNSBOOST

2.3

2.4

Vuvp(SNSBOOST)

undervoltage protection voltage on

pin SNSBOOST

1.5

1.6

Vovp(SNSBOOST)

overvoltage protection voltage on

pin SNSBOOST

2.59

2.63

2.67

Table 7.

Characteristics …continued

Tamb =25

°C; VSUPIC =20V; VSUPHV > 40 V; all voltages are measured with respect to SGND; currents are positive when

flowing into the IC; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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