Specifications

Chapter 5 – Power Supplies for PL Smart Transceivers
160 PL 3120/PL 3150/PL 3170 Power Line Smart Transceiver Data Boo
k
Figure 5.4 A-band Capacitor-Input Power Supply Schematic
TXOUT
C102
1uF
1 2
VA
0.75cm
AC2
D102
2 1
RXIN
VA
-+
D203 >=0.8A
1
3
2
4
PL 3120/ PL 3170 Reference Design (See Appendix A)
SVC-
VDD5
VA
TXOUT
RXIN
RXCOMP
GND
Note: To meet conducted emissions regulations, L102 and L201 must be oriented orthogonally (e.g., L102 radial and L201 axial lying down) AND spatially separated with at least a 0.75cm air gap between the inductor bodies (alternatively, any relative orientation and at least 1.5cm spacing may be used).
RV101
12
L201
NEU
PSA
min.
L103
1.5mH
12
230VAC Line
C101B 0.22uF
1 2
L102 39uH
1 2
VA
D101
2 1
VDD5
1.5cm
L102
VDD5
10% Metal Film 1.8uF 400VDC
1 2
RXCOMP
L201
SVC-
Coupling Circuit (See Chapter 4, Example 7 for details.)
U201 LM78L05
3
2
1
VI
GND
VO
min.
C201
min.
D1 LED YEL
21
+
C202 3900uF 20% 16V
<0.3 OHM @100kHZ
12
R1 1K 5%
12
J1 LINE
1
NEU
L102
VDD5
S1 SERVICE
12
AC1
D202 1N5350B 13V 5W
2 1
LINE
0.75cm
C101A 0.22uF
1 2
-+
D201
>=0.8A 600V
1
3
2
4
L201
Note: Diode bridge D203 is used to compensate for the positive temperature coefficient of the Zener diode D202. It functions the same as two forward-biased diodes in series, but does so with only one package. D202 and D203 must have tight thermal coupling for the compensation to work effectively. Locate the two diodes close together and place a copper pad that connects to the "PSA" net under both devices.
15V
J2
1
L202 220uH 10% >200mA
1 2
L101 1mH
12
L201
1mH 10% >200mA
1 2
Power Supply (<=2mA Application Current)
L102
R101
1M
1 2