AN4444 datasheet(5/68 Pages) STMICROELECTRONICS

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AN4444

List of figures

Figure 1.

Main board with ST7590 and STM32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2.

I(VCC) versus. I(PA_OUT) curve - typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 3.

ST7590 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 4.

Typical evaluation environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 5.

Board drawing with indication of the various sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 6.

ST7590 reference design - ST7590 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 7.

ST7590 reference design - power supply connections and ST7590 control lines . . . . . . . 17

Figure 8.

ST7590 reference design - PLC coupling section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 9.

ST7590 reference design - optional zero crossing detection and Rx amplifier circuits. . . . 19

Figure 10.

ST7590 reference design - MCU section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 11.

ST7590 reference design - MCU connectivity (part 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 12.

ST7590 reference design - MCU connectivity (part 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 13.

Line coupling section schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 14.

Measured frequency response of the line driver (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 15.

Montecarlo simulation of the line driver frequency response . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 16.

Measured frequency response of the transmission line coupling loaded

with the EN50065-1 LISN impedance (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 17.

Montecarlo simulation of the transmission line coupling response loaded

with the EN50065-1 LISN impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 18.

Measured frequency response of the transmission line coupling loaded

with the PRIME LISN impedance (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 19.

Montecarlo simulation of the transmission line coupling response loaded

with the PRIME LISN impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 20.

Measured frequency response of the reception passive filter (typical) . . . . . . . . . . . . . . . . 32

Figure 21.

Montecarlo simulation of the reception passive filter response . . . . . . . . . . . . . . . . . . . . . 32

Figure 22.

Measured frequency response of the reception external amplifier + passive filter

(higher curve) vs. reception passive filter only (lower curve) . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 23.

Measured frequency response of the reception external amplifier

with automatic attenuation (dark curve) vs. reception passive filter (light curve) . . . . . . . . 34

Figure 24.

Montecarlo simulation of the reception external amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 25.

Montecarlo simulation of the reception external amplifier with automatic

attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 26.

Isolated zero crossing coupling circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 27.

Zero crossing coupling - positive edge delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 28.

Zero crossing coupling - negative edge delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 29.

Measured input impedance of the line coupling - reception mode . . . . . . . . . . . . . . . . . . . 41

Figure 30.

Measured input impedance of the line coupling - reception mode

(with optional Rx amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 31.

Measured input impedance of the line coupling - transmission mode . . . . . . . . . . . . . . . . 42

Figure 32.

Conducted emissions test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 33.

Maximum output level on EN50065 AMN measurement port . . . . . . . . . . . . . . . . . . . . . . 44

Figure 34.

3 - 150 kHz conducted emissions on EN50065 AMN line measurement port . . . . . . . . . . 45

Figure 35.

3 - 150 kHz conducted emissions on EN50065 AMN neutral measurement port. . . . . . . . 45

Figure 36.

150 kHz - 30 MHz conducted emissions on EN50065 AMN line measurement port . . . . . 46

Figure 37.

150 kHz - 30 MHz conducted emissions on EN50065 AMN neutral measurement

port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 38.

Common mode disturbance protection - positive disturbance . . . . . . . . . . . . . . . . . . . . . . 48

Figure 39.

Common mode disturbance protection - negative disturbance. . . . . . . . . . . . . . . . . . . . . . 48

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