SSL4101T datasheet(20/29 Pages) NXP

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SSL4101T

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Product data sheet

Rev. 1 — 21 April 2011

20 of 29

NXP Semiconductors

SSL4101T

GreenChip III+ SMPS control IC

Loop compensation PFC (pin PFCCOMP)

transconductance

VVOSENSE to IO(PFCCOMP)

100

μA/V

IO(PFCCOMP)

output current on pin

PFCCOMP

VVOSENSE = 3.3 V

μA

VVOSENSE = 2.0 V

−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

Upper clamp voltage

[1] -3.9

-V

Vton(PFCCOMP)zero

zero on-time voltage on pin

PFCCOMP

3.4

3.5

3.6

Vton(PFCCOMP)max

maximum on-time voltage on

pin PFCCOMP

1.20

1.25

1.30

Pulse width modulator PFC

ton(PFC)

PFC on-time

VVINSENSE = 3.3 V;

VPFCCOMP =Vton(PFCCOMP)max

3.6

4.5

μs

VVINSENSE = 1 V;

VPFCCOMP =Vton(PFCCOMP)max

μs

Output voltage sensing PFC (pin VOSENSE)

Vth(ol)(VOSENSE)

open-loop threshold voltage on

pin VOSENSE

-0.4

-V

Vreg(VOSENSE)

regulation voltage on pin

VOSENSE

for IO(PFCCOMP) = 0 A

2.475

2.500

2.525

Vovp(VOSENSE)

overvoltage protection voltage

on pin VOSENSE

2.60

2.63

2.67

Iprot(VOSENSE)

protection current on pin

VOSENSE

−30

Overcurrent protection PFC (pin PFCSENSE)

Vsense(PFC)max

maximum PFC sense voltage

ΔV/Δt = 50 mV/μs

0.49

0.52

0.55

ΔV/Δt = 200 mV/μs

0.52

0.55

0.57

tleb(PFC)

PFC leading edge blanking

time

250

310

370

Iprot(PFCSENSE)

protection current on pin

PFCSENSE

−50

−5nA

Soft start PFC (pin PFCSENSE)

Istart(soft)PFC

PFC soft start current

−75

−60

−45

μA

Vstart(soft)PFC

PFC soft start voltage

enabling voltage

0.46

0.50

0.54

Rstart(soft)PFC

PFC soft start resistance

Oscillator PFC

fsw(PFC)max

maximum PFC switching

frequency

300

380

460

kHz

toff(PFC)min

minimum PFC off-time

0.8

1.1

1.4

μs

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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