STNRGPF02 datasheet(39/43 Pages) STMICROELECTRONICS

39 / 43 page

Contents

General description................................................................3

1.1

Inrush current limiter function description........................................... 3

1.1.1

Inrush current limiter function with resistive element (STNRGPF02 only) .............. 3

1.1.2

Inrush current limiter function with controlled bridge (STNRGPF12 only) .............. 4

STNRGPF02/12 control architecture................................................5

STNRGPF02/12 blocks diagram ....................................................6

3.1

Voltage and current loops ....................................................... 6

3.2

Measurements section .......................................................... 7

3.2.1

AC input voltage measurement .............................................. 7

3.2.2

Ambient temperature measurements ......................................... 8

3.2.3

Output Current measurement ............................................... 9

3.2.4

Output voltage sensing .................................................... 9

3.2.5

Channel current measurement .............................................. 9

3.3

Analog comparators section .................................................... 10

3.4

PWM Section: driving & interleaving.............................................. 11

3.5

Programming section .......................................................... 12

3.6

Status indicator ............................................................... 13

3.7

Start-up & Inrush Current Limiter function ......................................... 13

3.7.1

Inrush Current Limiter Function............................................. 14

3.7.2

PFC Soft Power-ON ..................................................... 15

3.7.3

Fan control ............................................................ 16

Pinout and pin description ........................................................18

4.1

Pinout ....................................................................... 18

4.2

Pin description ................................................................ 19

4.3

Input/output specification ....................................................... 21

Electrical characteristics..........................................................22

5.1

Parameter conditions .......................................................... 22

5.1.1

Minimum and maximum values............................................. 22

5.1.2

Typical values .......................................................... 22

5.1.3

Typical curves .......................................................... 22

STNRGPF02, STNRGPF12

Contents

DS12895 - Rev 2

page 39/43

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