7

UCC24612

www.ti.com

SLUSCM5A – AUGUST 2017 – REVISED FEBRUARY 2018

Submit Documentation Feedback

Copyright © 2017–2018, Texas Instruments Incorporated

(1)

Specified by design

6.6 Timing Requirements

At VDD = 12 VDC, CVG = 0 pF, CREG = 2.2 µF, −40°C ≤ TJ = TA ≤ +125°C, all voltages are with respect to VS, and currents are

positive into and negative out of the specified terminal, unless otherwise noted. Typical values are at TJ = +25°C.

TEST CONDITIONS

MIN

NOM

MAX

UNIT

MOSFET VOLTAGE SENSING

tdVGON

Gate turn-on propagation delay

VD transitions from 4.7 V to –0.3 V

in 5 ns, UCC24612-1, TJ = 25°C,

see curve for more information

40

80

120

ns

VD transitions from 4.7 V to –0.3 V

in 5 ns, UCC24612-2, TJ = 25°C,

see curve for more information

120

170

225

tdVGOFF

Gate turn-off propagation delay

VD moves from -0.3 V to 4.7 V in 5

ns

16

35

ns

MINIMUM ON-TIME

tON(min)

Minimum SR conduction time

UCC24612 -1

245

375

475

ns

UCC24612 -2

350

540

670

ns

Adaptive MINIMUM OFF-TIME

tOFF_ABSMIN

Absolute minimum SR off-time

UCC24612-1

200

400

595

ns

UCC24612-2

160

360

545

tOFF_MAX

Maximum SR off-blanking time

2.65

3.68

4.65

µs

GATE DRIVER

tr_VG

VG rise time

10% to 90%, CVG = 6.8 nF

10

32

65

ns

tf_VG

VG fall time,

90% to 10%, CVG = 6.8 nF

5

16

35

ns

LIGHTLOAD / STANDBY

tSTBY_DET

Standby mode detection time

3

4.5

6

ms

fSLEEP

Average frequency entering

standby mode

8

12

16

kHz

fWAKE

Average frequency coming out of

standby mode

10

15

20

kHz

fSTB_HYS

Average frequency hysteresis for

standby mode

2

3

4

kHz

PROTECTION

TTSD

Thermal shut-down threshold

130(1)

165

ºC

THYS

Thermal shut-down recovery

hysteresis

15

ºC