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ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
0RHB-40TRxx
* * * * * * * * * Isolated High Efficiency Basic Insulation Low Cost
RoHS Compliant
* * * * *
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 indicates application 1, 0RHB-40TRHx indicates 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 (IO = 80%load; Ta = 25 C) Notes Vin=48 V, full load , Ta=25C
-
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.
Roac =
1292 / 23 x 4.7 - 6.8( K) Vo - 1292 / 23
Vout Module Trim Roac Gnd
56 V Roac(k) 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
ISOLATED DC/AC CONVERTER
36 Vdc - 75 Vdc Input, 65 Vac - 95 Vac 17.5, 20, 25, 50 Hz/40 W Output
Mechanical Outline
Pin Connections
pin
1 2 3 4
function
Vin(+) CNT Case Vin(-)
pin
5 6 7
function
Vo2(~) GND OPTF2
pin
8 9 10
function
OPTF1 Trim Vo1(~)
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
INSTALLATION INSTRUCTION
1) The DC-AC Converter can be operated at an ambient temperature up to 85C maximum. 2) The DC-AC Converter is a built-in component. During installation into certain equipment the relevant requirements of EN 60950-1:2001 + A11 and IEC 60950-1:2001 shall be maintained. 3) The creepage distances, clearances and thickness of insulation between unearthed hazardous voltage input and hazardous voltage output circuits have complied with basic insulation requirements according to EN 60950-1:2001 + A11 and IEC 60950-1:2001. 4) The output ratings as shown on the label must not be exceeded. 5) The equipment is to be supplied from a DC source which is separated from AC mains by double or reinforced insulation, or by basic insulation and suitable earthing providing equivalent protection. 6) The equipment is intended to be installed into a class I or class II system, when installed into class I system, protective earth has to be reliably identified and suitable external protection devices have to be provided in the final system. 7) The equipment shall be installed with an external forced air-cooling according to installation instruction accompanied with the unit. The airflow direction is towards the side of the equipment.
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2008 Bel Fuse Inc. Specifications subject to change without notice. 090508
CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
FAR EAST Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com
EUROPE Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com

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