ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
0RHB-40TRxx
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Isolated
High Efficiency
Basic Insulation
Low Cost
RoHS Compliant
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Rev.C
Fixed Switching Frequency (110 kHz)
Output Short Circuit Protection
Input Under/Over Voltage Protection
Over Temperature Protection
CNT On/Off Logic
Low THD Sine Wave Output
Excellent Thermal Performance
External Output Voltage Control 65 Vrms - 95 Vrms
External Digital Frequency Selection 17.5 Hz, 20 Hz, 25 Hz and 50 Hz
Overload Protection with Advanced Output Power Control
Description
The 0RHB-40TRxx is an isolated dc/ac ring generator that operates from a nominal 48 Vdc source. This unit
provides up to 40 W output power. It is designed to be highly efficient and low cost in a half-brick package.
Part Selection
Output Voltage
65 Vac - 95 Vac
65 Vac - 95 Vac
Input Voltage
36 Vdc - 75 Vdc
36 Vdc - 75 Vdc
Max. Output
Power
40 W
40 W
Typical
Efficiency
85%
85%
Model Number
Active High
0RHB-40TRG0
0RHB-40TRH0
Model Number
Active Low
0RHB-40TRGL
0RHB-40TRHL
Notes:
1.
0RHB-40TRGx i
ndicates application 1,
0RHB-40TRHx i
ndicates application 2, details please see page 5.
2. Add “G” suffix at the end of the model number to indicate Tray Packaging.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-
-40
°C
-50
°C
Typ
-
-
-
-
Max
80 V
1500 Vac
85
°C
115
°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (full load)
Input Current (no load)
Input Reflected Ripple Current (pk-pk)
Turn-on Voltage Threshold
Under Voltage Threshold
Over Voltage Threshold
Min
36 V
-
-
-
-
-
-
Typ
48 V
-
-
-
33 V
-
-
Max
75 V
1.5 A
60 mA
150 mA
-
32 V
90 V
Tested with simulated source impedance
of 10 uH, 5 Hz to 20 MHz; use a 100 uF
/100 V electrolytic capacitor with ESR = 1
ohm max at 200 kHz at 25
°C.
Notes
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
Output Specifications
Parameter
Output Voltage Set Point
Output Frequency
Load Regulation
Line Regulation
Regulation Over Temperature
(-40deg.C - 85deg.C)
Voltage Accuracy
Frequency Accuracy
THD
Output Current Range(95 Vac)
Output Power Limit
Turn on Time
Min
92 V
f-1.0 Hz
-
-
-
-
-
-
0 mA
-
-
Typ
95 V
f Hz
1%Vo
0.5%Vo
-
3%Vo
-
-
-
50 W
-
Max
98 V
f+1.0 Hz
2%Vo
1%Vo
0.05%Vo/C
5%Vo
3%Vo
5%
420 mA
-
1000 mS
Hiccup mode
Notes
Vin=48 V, Io=50% load. Trim pin
is connected to GND.
Note:
All specifications are typical at nominal input, full load at 25
°C
unless noted.
General Specifications
Parameter
Efficiency
Switching Frequency
Isolation capacitance
Output Voltage Trim Range
Over Temperature Protection
MTBF
Dimensions
Inches
millimeters
Weight
-
2.28 x 2.40 x 0.50
57.91 x 60.96 x 12.70
66 g
Min
83%
100 kHz
-
65 Vac
-
Typ
85%
110 kHz
1500 pF
-
125
°C
2,062,694 hours
Max
-
120 kHz
-
95 Vac
-
Calculated Per Bell Core SR-332 (I
O
=
80%load; T
a
= 25
°C)
Notes
Vin=48 V, full load , Ta=25°C
-
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Control Specifications
Parameter
CNT On/Off
Signal High (Unit On)
Signal Low (Unit Off)
Signal High (Unit Off)
Signal Low (Unit On)
Current Source/Sink
Active High
36 V
-0.7 V
36 V
-0.7 V
0 mA
-
-
-
-
-
75 V
30 V
75 V
30 V
2 mA
The CNT pin open, Unit on.
Min
Typ
Max
Notes
Active Low
The CNT pin open, Unit off.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
Output Trim Equations
Equations for calculating the trim resistor is shown below. The Roac resistor should be connected between the
Trim pin and Gnd pin.
R
oac
1292 / 23
=
×
4.7
−
6.8(
K
Ω
)
Vo
−
1292 / 23
Vout
Module
Trim
Roac
Gnd
56 V
Roac(kΩ)
Open
65 V
23.113
70 V
12.296
75 V
7.224
80 V
4.281
85 V
2.359
90 V
1.005
95 V
0
Efficiency Data
Efficiency Curve
95.0%
90.0%
Efficiency
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
10
20
30
40
Output Power(W)
36 V
48 V
75 V
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
Thermal Derating Curves
With maximum junction temperature of semiconductors derated to 120 degree C.
Vin=48 V
Frequency Setting
Output Frequency
（Hz）
17.5
20
25
50
OPTF1
0
0
1
1
OPTF2
0
1
0
1
OPTF1 and OPTF2:
0: Connected to GND
1: Open
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
Typical Application
Typical Application 1 (0RHB-40TRGx)
Output AC is superimposed on DC bias – A single DC power supply is used for the Ring Generator feeding and
for the output biasing.
0RHB -40TRGx
-48V Rtn
1 V(+)
12uH /3A
+
Vo1(~) 10
TRIM 9
2 CNT
OPTF 1 8
OPTF2 7
GND 6
4 V(-)
Vo2(~) 5
0V
-48V
Telephone
Ports
220 uF/100 V 220uF/100 V
220 uF /100V
3 CASE
-
-48V
Typical Application 2 (0RHB-40TRHx)
Output AC is superimposed on DC bias – Two DC power supplies are used, one for the Ring Generator feeding
and another for the output biasing.
0RHB-40TRHx
-48V Rtn
1 V(+)
12 uH/3 A
+
Vo1(~) 10
TRIM 9
2 CNT
OPTF 1 8
OPTF2 7
0V
220 uF/100V 220 uF/100 V
220 uF/100 V
3 CASE
GND 6
4 V(-)
Vo2(~) 5
-48V
Telephone
Ports
-48V
DC Bias
48V
-
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
