5

TPS548B22

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SLUSCE4 – JANUARY 2017

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6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

UNIT

Input voltage range

PVIN with no snubber circuit:

SW ringing peak voltage equals 23 V at 25 A output

1.5

14

V

PVIN with snubber circuit:

SW ringing peak voltage equals 23 V at 25 A output

1.5

18

VDD

4.5

22

BOOT

–0.1

24.5

BOOT to SW

DC

–0.1

6.5

< 10 ns

–0.1

7

NU

–0.1

5.5

EN_UVLO, VOSNS, MODE, FSEL, ILIM

–0.1

5.5

RSP, RESV_TRK, VSEL

–0.1

3.3

RSN

–0.1

0.1

PGND, AGND, DRGND

–0.1

0.1

SW

DC

–0.1

18

< 10 ns

–5

27

Output voltage range

PGOOD, BP

–0.1

7

V

–40

125

°C

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.4 Thermal Information

TPS548B22

UNIT

RVF (QFN)

40 PINS

Junction-to-ambient thermal resistance

28.5

°C/W

Junction-to-case (top) thermal resistance

18.3

°C/W

Junction-to-board thermal resistance

3.6

°C/W

Junction-to-top characterization parameter

0.96

°C/W

Junction-to-board characterization parameter

3.6

°C/W

Junction-to-case (bottom) thermal resistance

0.6

°C/W