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ISOLATED DC/DC CONVERTERS
48 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
0RQB-C0U Series
* * * * * * * * Isolated High Efficiency High Power Density Low Cost Input Under Voltage Lockout Fixed Frequency (285 kHz) Active Low/High (Option) Input Over Voltage Lockout * * * * * * *
RoHS Compliant
Output Over Voltage Shutdown OCP/SCP Over Temperature Protection Remote On/Off Output Voltage Trim Positive/Negative Remote Sense Basic Isolation
Description
The 0RQB-C0U Series are isolated dc/dc converters that operate from a nominal 48 V source. These units will provide up to 100 W of output power from a nominal 48 V input. These units are designed to be highly efficient and low cost. Typical efficiency of 12 V output at 48 V input at full load is 91%. Features include remote on/off, over current protection and under-voltage lockout. These converters are provided in an industry standard quarter brick package.
Part Selection
Output Voltage 12 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V Input Voltage 18 V - 75 V 18 V - 75 V 18 V - 75 V 18 V - 75 V 18 V - 75 V 18 V - 75 V 18 V - 75 V Max. Output Current 8.3 A 20 A 25 A 30 A 30 A 30 A 30 A Max. Output Power 100 W 100 W 82.5 W 75 W 54 W 45 W 36 W Typical Efficiency 91% 90% 90% 89.5% 85% 83% 80% Model Number Active High 0RQB-C0U120 0RQB-C0U050 0RQB-C0U033 0RQB-C0U025 0RQB-C0UV80 0RQB-C0UV50 0RQB-C0UV20 Model Number Active Low 0RQB-C0U12L 0RQB-C0U05L 0RQB-C0U03L 0RQB-C0U02L 0RQB-C0UV8L 0RQB-C0UV5L 0RQB-C0UV2L
Note: Add "G" suffix at the end of the model number to indicate Tray Packaging.
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 2000 V 85 C 125 C Notes
Note: All specifications are typical at nominal input, full load at 25 C unless noted.
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 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Input Specifications
Parameter Input Voltage Input Current (full load) VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Input Current (no 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 Input over voltage Lockout
2
Min 18 V -
Typ 48 V 100 mA 10 mA
Max 75 V 7.0 A 7.0 A 6.0 A 5.5 A 4.0 A 3.5 A 3.0 A 180 mA 15 mA 20 mA 5 mA 0.1 A s 17.5 V 16.5 V 80 V
2
Notes
16.5 V 15.5 V 76 V
10 mA 2 mA 0.05 A s 17.0 V 16.0 V 78 V
2
Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz BW; use a 100 uF /100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz at 25 C.
Output Specifications
Parameter Output Voltage Set Point VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Line Regulation VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.2 V-1.8 V Load Regulation VO=12 V VO=5.0 V VO=3.3 V -2.5 V VO=1.2 V -1.8 V Regulation Over Temperature (-40 C to +85 C) VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V-1.2 V Min 11.820 V 4.925 V 3.251 V 2.455 V 1.773 V 1.448 V 1.182 V Typ 12.00 V 5.00 V 3.30 V 2.50 V 1.80 V 1.50 V 1.20 V 24 mV 5 mV 4 mV 4 mV 3 mV 30 mV 10mV 8 mV 5 mV Max 12.180 V 5.075 V 3.360 V 2.545 V 1.827 V 1.523 V 1.218 V 48 mV 15 mV 15 mV 10 mV 6 mV 60 mV 20 mV 15 mV 10 mV Notes
Vin=48 V, Io=50% full load
60 mV 40 mV 30 mV 20 mV 15 mV
100 mV 65 mV 50 mV 50 mV 30 mV
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 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Output Specifications (continued)
Parameter Output Current Range VO=12 V VO=5.0 V VO=3.3 V VO=1.2 V -2.5 V Current Limit Threshold VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.2 V -1.8 V Short Circuit Surge Transient Vin=48 V ; Ripple and Noise (rms) VO=12 V VO=5.0 V VO=3.3 V -2.5 V VO=1.2 V -1.8 V Vin=24 V ; Ripple and Noise (rms) VO=12 V VO=5.0 V VO=3.3 V VO=1.2 V -2.5 V Vin=48 V ; Ripple and Noise (pk-pk) VO=12 V VO=5.0 V VO=3.3 V-2.5 V VO=1.2 V-1.8 V Vin=24 V ; Ripple and Noise (pk-pk) VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.2 V-1.8 V Turn on Time Overshoot at Turn on Output Capacitance VO=12.0 V VO=5.0 V VO=3.3 V VO=1.2 V-2.5 V Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time 300 mV 150 uS 300 mV 150 uS 150 mV 100 uS 150 mV 100 uS 150 mV 100 uS 150 mV 100 uS 480 mV 200 uS 480mV 150 uS 200 mV 150 uS 200 mV 150 uS 200 mV 100 uS 200 mV 100 uS 10 mS 0 uF 0 uF 0 uF 0 uF 30 mV 25 mV 20 mV 15 mV 25 mV 20 mV 15 mV 10 mV 100 mV 75 mV 50 mV 40 mV 75 mV 50 mV 35 mV 30mV 25 mV 0% 50 mV 40 mV 40 mV 30 mV 40 mV 30 mV 25 mV 20 mV 150 mV 120 mV 100 mV 80 mV 120 mV 100 mV 70 mV 60 mV 50 mV 100 mS 5% 1200 uF 6800 uF 15000 uF 20000 uF 9.6 A 27 A 35 A 10.5 A 24 A 32 A 40 A 36 A 3A s
2
Min 0A 0A 0A 0A
Typ -
Max 8.3 A 20 A 25 A 30 A 12 A 35 A 45 A 5A s
2
Notes
Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output.
VO=12.0 V
VO=5.0 V
Test conditions: di/dt = 0.1 A/uS, Vin=48 V, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output.
VO=3.3 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/DC CONVERTERS
48 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Output Specifications (continued)
Parameter Transient Response Overshoot 50% ~ 75% Max Load Settling Time Overshoot 75% ~ 50% Max Load Settling Time Overshoot 50% ~ 75% Max Load Settling Time Overshoot 75% ~ 50% Max Load Settling Time Min Typ 150 mV 85 uS 150 mV 85 uS 50 mV 100 uS 50 mV 100 uS Max 200 mV 100 uS 200 mV 100 uS 80 mV 150 uS 80 mV 150 uS Notes
VO=2.5 V,
VO=1.2 V-1.8 V
Test conditions: di/dt = 0.1 A/uS, Vin=48 V, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output.
Note: All specifications are typical at nominal input, full load at 25 C unless noted.
General Specifications
Parameter Efficiency VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Efficiency VO=12 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Switching Frequency Isolation capacitance Input to Output Isolation Voltage Remote Sense Compesation Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches millimeters Weight 2.30 x 1.45 x 0.395 58.42 x 36.83 x 10.03 40 g 88% 89% 240 kHz 80% Vo 91% 91% 91% 90% 85% 83% 80% 285 kHz 1500 pF 125 C 130% Vo TBD 320 kHz 2000 V 10% Vo 110% Vo Vin=48V, full load, Hiccup mode Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) The total voltage increased by trim and remote sense should not exceed 10%Vo. 88% 88% 88% 90% 90% 90% 89.5% 85% 83% 80% Min Typ Max Notes
Vin=48 V, full load , Ta=25 C
Vin=24 V, full load , Ta=25 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 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Control Specifications
Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Current Sink Active Low -0.3 V 2.4 V -0.3 V 2.4 V 0 mA 0.8 V 18 V 0.8 V 18 V 0.75 mA 0RQB-C0UxxL. The remote on/off pin open, Unit off. 0RQB-C0Uxx0. The remote on/off pin open, Unit on. Min Typ Max Notes
Active High
Output Trim Equations
Equations for calculating the trim resistor are shown below (Unit: k). The Trim Down resistor should be connected between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the Vout. Only one of the resistors should be used for any given application.
1) For Vo=1.5 V - 12 V:
Vout Module Trim GND Rtrimdown
Rtrimdown =
511 - 10.22 delta
Rtrimup =
(100 + delta ) Vo 5.11 - 626 - 10.22 1.225 delta
Module
Vout Trim GND Rtrimup
2) For Vo=1.2 V:
511 Rtrimdown = - 10.22 delta
Rtrimup =
(100 + delta ) Vo 5.11 - 313 - 10.22 0.6125 delta
Notes:
delta =
(Vo _ req - Vo) x100[%]
Vo
Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage
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 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Efficiency Data
95% 85% EFFICIENCY 75% 65% 55% 45% 3A 7.5A 15A 22.5A 30A OUTPUT CURRENT (A) 18 V 24V 48 V 75 V 1 EFFICIENCY 95.0% 85.0% 75.0% 65.0% 55.0% 45.0% 2.5 6.25 12.5 18.75 25 OUTPUT CURRENT (A) 18 V 24V 48 V 75 V
Vo=2.5 V
95% 90% EFFICIENCY 85% 80% 75% 70% 0.83A 2.075A 4.15A 6.225A 8.3A OUTPUT CURRENT (A) 18 V 24V 48 V 75 V
Vo=3.3 V
Vo=12 V
Thermal Derating Curves
Vo=12 V, Vin=48 V
Vo=12 V, Vin=24 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/DC CONVERTERS
48 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Ripple and Noise Waveforms
12 V/8.3 A output Note: Ripple and noise at full load, 48 V input, with a 1 uF ceramic capacitor and a 10 uF tantalum capacitor at the output, and Ta=25 deg C.
Transient Response Waveforms
Vout= 12 V 50%-75% Load Transients at Vin=48 V
Vout= 12 V 75%-50% Load Transients at Vin=48 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/DC CONVERTERS
48 V Input 12 V/8.3 A, 5 V/20 A, 3.3 V/25 A, 1.2-2.5 V/30 A Outputs
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 8 Function Vin (+) Remote On/Off Vin (-) Vout (-) Remote Sense (-) Trim Remote Sense (+) Vout (+) Pin Size 0.04" 0.04" 0.04" 0.062" 0.04" 0.04" 0.04" 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.
(c)2006 Bel Fuse Inc. Specifications subject to change without notice. 031706
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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