SMH4814
Preliminary Information
APPLICATIONS INFORMATION (CONTINUED)
RS
1kΩ
RPD
100kΩ
I2C
–48V Ret.
VOUT
DC-to-DC
Converter A
VOUT
+
VIN+
VIN-
C5C
0.1µF
-
RD
6.8kΩ
1/2W
R3
RPD1
1M
Pin
Detect
1
100K
PD1
UV
VOUT
+
VIN+
VIN-
DC-to-DC
R2
R1
Converter B
PUPA
PUPB
OV
SMH4814
VOUT
-
RPD0
1M
VSS
PD0
PUPC
PUPD
VOUT
+
Pin
Detect
0
VIN+
VIN-
DC-to-DC
RA
Converter C
VOUT
-
RT
100kΩ
RGA
10Ω
RGB
10Ω
RSHS
–48V B
RGHS
10Ω
VOUT
+
VIN+
VIN-
DC-to-DC
RB
Converter D
VOUT
-
Primary
Secondary
Figure 15A - Full Application Schematic with all isolation components shown. The value of RD can be
chosen to be a single 1/2W resistor as shown or a parallel combination of smaller 1/10W resistors as
shown in Figure 15B.
Summit Microelectronics, Inc
2080 2.0 07/21/05
20
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
