Appendix B Hardware Design Examples; B1 Power Supply; B1.1 Dual-Galvanical Isolated Supply For Bus And Electronics; B1.2 Galvanically Isolated Supply For Bus Electronics - HMS AnyBus DataTransfer Design Manual

Appendix B Hardware Design Examples

B1 Power Supply

B1.1 Dual-Galvanical Isolated Supply for BUS and Electronics.

The dual power supply is based on the DC/DC Brandner DH5W2-41. This circuit has both overload and
over temperature protection. Maximum current for each output is 150 mA.
+24V
D0
2 1
24V_Gnd
1N5819
Ref. Component
C1 Capacitor 10u/50V
C2, C4 Capacitor 100n/63V
C3, C5 Capacitor 100u/16V
D0 Diode 1N5819
D1 Diode SMBJ24A
L1, L2 EMI filter
DC/DC DC/DC

B1.2 Galvanically Isolated Supply for BUS Electronics:

This single power supply is galvanic isolated and built on the DC/DC TRACO TEM2 2411. The circuit has
both overload and over temperature protection. Maximum current is 400mA.
+24V
C1
10uF
D0
2 1
24V_Gnd
1N5819
+ DC
IN
-
C1 D1
10uF SMBJ24A
DC
DH5W2-41
BRANDNER
+ DC
IN
+
OUT
-
-
D1
SMBJ24A
DC
TEM2
2411
TRACO
HMS F
L1
1
EMI
+
OUT1
-
+
OUT2
L2
1
-
EMI
Note
Electrolyte
Polyester
Electrolyte
Transient protection
NFM61R30T472
DH5W2-41
L1
1 3
EMI
S AB
IELDBUS YSTEMS
Design Guide
3
+5V_BUS
C3
+
C2
100uF
100nF
GND_BUS
3
Vcc
C5
+
C4
100uF
100nF
+5V_BUS
+ C3
C2
100uF
100nF
GND_BUS
Revision 1.12
1998-08-12
Page 33 (35)