STNRG011ATR datasheet(27/31 Pages) STMICROELECTRONICS

27 / 31 page

Contents

Description ........................................................................2

Pin connection ....................................................................3

Absolute maximum ratings and thermal data .......................................4

Detailed block diagram ............................................................5

Pin function .......................................................................6

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

Safety data .......................................................................12

Application schematics ...........................................................13

Architecture ......................................................................14

Functional description ............................................................15

10.1

HV startup and VCC management ............................................... 15

10.2

AC line monitor and protection .................................................. 15

10.2.1

Brown-in/out ........................................................... 15

10.2.2

Line synchronization ..................................................... 16

10.2.3

Line disconnection and X-cap discharge ...................................... 16

10.2.4

Vline surge stop ........................................................ 16

10.2.5

Line monitor for PFC control ............................................... 16

10.2.6

Early warning signal ..................................................... 16

10.3

Gate-drivers .................................................................. 16

10.4

PFC control and fault management .............................................. 17

10.4.1

PFC resources ......................................................... 17

10.4.2

Vin reading ............................................................ 17

10.4.3

PFC output voltage feedback reading ........................................ 17

10.4.4

PFC OVP comparator .................................................... 17

10.4.5

PFC RECOT comparator ................................................. 17

10.4.6

PFC OC1 comparator .................................................... 17

10.4.7

PFC OC2 comparator .................................................... 17

10.4.8

PFC ZCD ............................................................. 17

10.4.9

PFC state machine event driven (SMED) ..................................... 17

10.5

PFC algorithm ................................................................ 18

10.5.1

Ramp enhanced COT improved (patented).................................... 18

10.5.2

Operating modes ....................................................... 18

10.6

PFC protections............................................................... 18

10.6.1

PFC OVP ............................................................. 18

10.6.2

PFC OCP2 ............................................................ 18

STNRG011A

Contents

DS13973 - Rev 2

page 27/31

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