UCC28811 datasheet(5/31 Pages) TI

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UCC28810

UCC28811

www.ti.com.............................................................................................................................................................................................. SLUS865 – OCTOBER 2008

ELECTRICAL CHARACTERISTICS (continued)

–40°C

≤ TA = TJ ≤ 105°C, VVDD = 12 VDC, CGDRV = 0.1-µF from VDD to GND, all voltages are with respect to GND.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ZERO POWER

VEAOUT

Zero power comparator threshold(1)

2.1

2.3

2.5

TRANSFORMER ZERO ENERGY DETECT

Input threshold (rising edge)(1)

1.00

1.25

1.80

Hysteresis(1)

250

350

450

Input high clamp

ITZE = 3 mA

Input low clamp

ITZE = –3 mA

0.30

0.65

0.90

tRSRT

Restart time delay

200

400

µs

CURRENT SENSE COMPARATOR

IBIAS

Input bias current

VISENSE = 0 V

0.1

1.0

µA

Input offset voltage(1)

–10

tDLY

Delay to output

ISENSE to GDRV

300

400

Maximum current sense threshold voltage

1.55

1.70

1.80

PFC GATE DRIVER

RPULLUP

GDRV pull up resistance

IGDRV = –125 mA

Ω

RPULLDN

GDRV pull down resistance

IGDRV = 125 mA

Ω

tRISE

GDRV output rise time

CGDRV = 1 nF, RGRDV = 10 Ω

tFALL

GDRV output fall time

CGDRV = 1 nF, RGRDV = 10 Ω

(1)

Ensured by design. Not production tested.

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