List of figures

Figure 1.

STNRGPF02: Inrush current limiter with resistor in series to output capacitor ......................... 4

Figure 2.

STNRFPF12: Inrush current limiter with controlled rectifier bridge ................................. 4

Figure 3.

STNRGPF12 control scheme .......................................................... 5

Figure 4.

STNRGPFx2 Block diagram ........................................................... 6

Figure 5.

Voltage loop and current reference ...................................................... 7

Figure 6.

Vin, Measurement.................................................................. 8

Figure 7.

Temperature measurement ........................................................... 8

Figure 8.

Vin, Iout and Vout Measurement ........................................................ 9

Figure 9.

Channel current measurement ........................................................ 10

Figure 10.

Analog comparators section .......................................................... 11

Figure 11.

Driving & interleaving............................................................... 12

Figure 12.

Programming section............................................................... 13

Figure 13.

Status Indicator .................................................................. 13

Figure 14.

Start-Up sequence ................................................................ 14

Figure 15.

Inrush Current Limiter function with limiter resistor and bypass relay .............................. 14

Figure 16.

Digital Inrush Current Limiter function with a semi-controlled input bridge ........................... 15

Figure 17.

Digital Inrush Current Limiter function: sequence of driving of the SCR ............................ 15

Figure 18.

Running mode or Burst mode ......................................................... 16

Figure 19.

Fan Control function ............................................................... 17

Figure 20.

STNRGPF12 - TSSOP38 pinout ....................................................... 18

Figure 21.

STNRGPF02 - TSSOP38 pinout ....................................................... 19

Figure 22.

Supply current measurement conditions.................................................. 22

Figure 23.

Pin loading conditions .............................................................. 23

Figure 24.

Pin input voltage .................................................................. 23

Figure 25.

External capacitor CVOUT ........................................................... 25

Figure 26.

VOH normal pin................................................................... 28

Figure 27.

VOL normal pin ................................................................... 28

Figure 28.

VOH fast I/Os pins ................................................................. 29

Figure 29.

VOL fast I/Os pins ................................................................. 29

Figure 30.

VOH CLOCK pin .................................................................. 30

Figure 31.

VOL CLOCK pin .................................................................. 30

Figure 32.

TSSOP38 package outline ........................................................... 34

STNRGPF02, STNRGPF12

List of figures

DS12895 - Rev 2

page 42/43