STDRIVEG611Q datasheet(29/33 Pages) STMICROELECTRONICS

29 / 33 page

Contents

Block diagram .....................................................................2

Typical application schematics ....................................................3

Pin description ....................................................................4

Device ratings .....................................................................6

4.1

Absolute maximum ratings....................................................... 6

4.2

Recommended operating conditions .............................................. 7

4.3

Thermal data .................................................................. 7

Electrical characteristics...........................................................8

5.1

Characterization figures ........................................................ 11

Device description................................................................13

6.1

Device structure .............................................................. 13

6.1.1

Logic section ........................................................... 13

6.1.2

Low-side driver ......................................................... 13

6.1.3

High-side driver......................................................... 14

6.1.4

Comparator and smart shutdown ........................................... 14

6.2

Truth table and control inputs ................................................... 14

6.3

Gate driving outputs and gate resistors ........................................... 15

6.3.1

Gate driving network for slow hard-off dV/dt (motor control applications) ............. 16

6.4

Supply rails, LDOs, UVLO protections, and bootstrap diode .......................... 16

6.4.1

VCC supply structure and relevant UVLO protection............................. 17

6.4.2

VLS supply structure and relevant UVLO protection ............................. 17

6.4.3

Bootstrap diode......................................................... 18

6.4.4

VHS supply structure and relevant UVLO protection ............................. 18

6.5

Standby ..................................................................... 19

6.6

Comparator with SmartSD ...................................................... 19

6.7

Thermal shutdown............................................................. 21

PCB, BOM, and layout recommendations .........................................22

7.1

PCB suggestions.............................................................. 22

7.1.1

External BOM values selection and placement ................................. 22

7.1.2

Gate resistors .......................................................... 23

7.1.3

Noise reduction ......................................................... 23

Package information..............................................................24

8.1

QFN 4 x 5 x 1 mm, 18 leads, 0.5 mm pitch, package information...................... 24

8.2

Suggested footprint............................................................ 26

STDRIVEG611

Contents

DS14457 - Rev 2

page 29/33

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