ISOLATED DC/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
0RQB-D0T12x
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RoHS Compliant
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Rev.B
Fixed Frequency (300 kHz) Isolated High Efficiency High Power Density Input Under Voltage Lockout Basic Insulation
Output Over Voltage Latch Off Over Temperature Protection SCP/OCP Low Cost Remote On/Off
Description
The 0RQB-D0T12x are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will provide up to 216 W of output power from a nominal 48 Vdc input. These units are designed to be highly efficient and low cost. Features include remote on/off, over current protection, input under-voltage and output over voltage protection. These converters are provided in an industry standard quarter brick package.
Part Selection
Output Voltage 12 Vdc Input Voltage 36 Vdc - 75 Vdc Max. Output Current 18 A Max. Output Power 216 W Typical Efficiency 92.5% Model Number Active High 0RQB-D0T120 Model Number Active Low 0RQB-D0T12L
Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging. 2. 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) Remote On/Off I/O Isolation Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 °C -55 °C Typ Max 80 V 18 V 2250 V 85 °C 125 °C Notes
Note: All specifications are typical at 25 °C unless otherwise stated.
Input Specifications
Parameter Input Voltage Input Current (no load) Input Current (full load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold
2
Min 36 V 31 V
Typ 48 V 110 mA 4 mA 20 mA 5 mA TBD 34 V 33 V
Max 75 V 200 mA 7A 7 mA 35 V -
Notes
With simulated source impedance of 12 uH, 5 Hz to 20 MHz; use a 220uF/100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz
Note: All specifications are typical at nominal input, full load 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/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
Output Specifications
Parameter Output Voltage Set Point Line Regulation Load Regulation Regulation Over Temperature (-40 °C to 85 °C) Output Current Current Limit Threshold Ripple and Noise (rms) Ripple and Noise (pk-pk) Turn on Time Overshoot at Turn on Output Capacitance Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time VO=12 V 300 mV 100 uS 300 mV 100 uS 600 mV 200 uS 600 mV 200 uS di/dt=0.1A/us, Vin=48Vdc, Ta=25 °C, with 1 uF ceramic capacitor and a 10uF Tantalum capacitor at the output. Min 11.76 V 0A 19 A Typ 12 V 20 mV 30 mV 0.02%Vo/℃ 21 A 30 mV 85 mV 10 mS 0% Max 12.24 V 18 A 27 A 50 mV 150 mV 5% 6000 uF 0 - 20 MHz BW, with 1 uF ceramic load capacitor and a 10uF Tantalum capacitor at the output Notes Vin=48 V, Io=100%Load
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
General Specifications
Parameter Efficiency Switching Frequency Isolation Capacitance Input to Output Isolation Voltage Remote Sense Compensation Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 2.30 x 1.45 x 0.394 58.42 x 36.83 x 10.00 48 g Min 89% 270 kHz 90% 13.5 V Typ 92.5% 300 kHz 3000 pF 130 ℃ 1,632,203 hours Max 330 kHz 2250 V 10% 110% 15 V Vin=48 V, Io=full load, Latch mode Calculated Per Bell Core SR-332 (Vin=48 V, Vo=12 V, Io=14.4 A, 300LFM forced air flow,Ta = 25 °C) The voltage increased by trim and sense should not exceed 110%Vout. Notes Vin=48 V, full load
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/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
Control Specifications
Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Active Low Min -0.3 V 2.4 V -0.3 V 2.4 V Typ Max 0.8 V 18 V 0.8 V 18 V Notes The Remote On/Off pin is open, Unit off. The Remote On/Off pin is open, Unit on
Active High
Output Trim Equations
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected between the Trim pin and GND pin. The Trim Up resistor should be connected between the Trim pin and the Vout pin. Only one of the resistors should be used for any given application.
Rtrimdown =
511 − 10.22[kΩ] delta
Vout Module Trim GND
Vout Module Trim GND Rtrimup
Rtrimdown
Rtrimup =
Note:
(100 + delta ) ⋅ Vo ⋅ 5.11 − 625 − 10.22[kΩ] 1.225 ⋅ delta
delta =
(Vo _ req − Vo ) × 100[%]
Vo
Output voltage Vo=12.004 V
Efficiency Data
96.0% 94.0% EFFICIENCY 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 1.8A 4.5A 9A 13.5A 18A 36 V 48 V 75 V
OUTPUT CURRENT(A)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
Thermal Derating Curve
Vin=48V, with maximum junction temperature of semiconductors derated to 120℃.
Ripple and Noise Waveform
Note: Ripple and noise at full load, 48 Vdc input, 12 Vdc/18 A output, and with a 1 uF ceramic cap and a 10 uF tantalum cap at the output, Ta=25 deg C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
Transient Response Waveforms
Vout= 12 V 50%-75% Load Transients at Vin=48 V@Ta=25℃
Vout= 12 V 75%-50% Load Transients at Vin=48 V@Ta=25℃
Note: Transients response at di/dt=0.1 A/us, Vin=48 Vdc, Ta=25 °C, with 1 uF ceramic capacitor and a 10uF Tantalum capacitor at the output.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 8 Function Vin(+) On/Off Vin(-) Vo(-) RS(-) Trim RS(+) Vo(+) Pin Size 0.040’’ 0.040’’ 0.040’’ 0.062’’ 0.040’’ 0.040’’ 0.040’’ 0.062’’
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
©2007 Bel Fuse Inc. Specifications subject to change without notice. 121107
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