IRS29831 Просмотр технического описания (PDF) - International Rectifier

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IRS29831

LED FLYBACK CONTROL IC

International Rectifier 

IRS29831PBF

Electrical Characteristics (cont’d)

VCC = VBIAS=14V +/- 0.25V, COUT = 1000pF,

VCOMP = VOC = VDC = VZX = 0V, TA=25ºC unless otherwise specified.

TWD

tONMIN

tONMAX

tOFFMIN

VDCMAX

PFC Watch-dog Pulse Interval

PWM Minimum ON time

PWM Maximum ON Time

PWM Minimum OFF Time

Maximum voltage for multiplier input†

VCSPKMAX

†

Maximum peak voltage for multiplier input

Protection Circuitry Characteristics

VCSTH

VCOMPOFF

CS Pin Over-current Sense Threshold

Cut off voltage below which gate drive output

is disabled

VCOMPOFF_HYS Cut off voltage hysteresis

VOVTH

ZX Pin Over-voltage Comparator Threshold

65

220

22

2.7

---

---

1.19

1.12

---

4.90

100

280

32

3.0

---

---

1.25

1.40

40

5.15

135

340

42

3.3

7.0

1.0

1.31

1.68

---

5.40

μs

ZX = 0

COMP = 4.0V

ns ††

ZX = 0

COMP = 13V

μs ††

††

V GBD

Signal is

averaged before

V entering multiplier

input.

GBD

V

mV

V

VOVHYS

ZX Pin Over-voltage Comparator Hysteresis

---

200

--- mV

†:

††:

GBD:

Multiplier operates accurately from zero to the maximum input specified.

Measured at the Drain with MOSFET switching delay also included.

Guaranteed by design.

6 www.irf.com © 2014 International Rectifier

September 10, 2014

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