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ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 3.3 Vdc /15 A Output
0RCY-60U03x
* * * * * * *
RoHS Compliant
* * * * * * * *
Rev. C
Isolated High Efficiency High Power Density Fixed Frequency (260 kHz) Input Under-Voltage Lockout Input Over-Voltage Lockout Ultra Wide Input Range: 18 Vdc - 75 Vdc
Output Over-Voltage Shutdown OCP/SCP Over Temperature Protection Low Cost Output Voltage Trim Positive/Negative Remote Sense Basic Insulation Remote On/Off
* UL60950-1 (UL/cUL) Recognized (Pending)
Description
The 0RCY-60U03x is part of the isolated dc/dc converters that operate from a wide input range (18 Vdc - 75 Vdc) and can cover both 24 Vin and 48 Vin input range. These units will provide up to 49.5 W of output power. They are designed to be highly efficient and low cost. Features include remote on/off, over current protection, over voltage shut down, over temperature protection and under-voltage lockout. These converters are provided in an industry standard 1/8 brick package.
Part Selection
Output Voltage 3.3 Vdc Input Voltage 18 Vdc - 75 Vdc Max. Output Current 15 A Max. Output Power 49.5 W Typical Efficiency 90% Model Number Active High 0RCY-60U033 Model Number Active Low 0RCY-60U03L
Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. 2. Add "G" suffix at the end of the model numbers 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 1500 V 85 C 125 C Notes
Input Specifications
Parameter Input Voltage Input Current (full load) Vin=18 V Vin=75 V Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (rms) Input Reflected Ripple Current (pk-pk) Min 18 V Typ 24 V/48 V 3.3 A 0.76 A 65 mA 10 mA 7 mA 30 mA Max 75 V 100 mA 15 mA 10 mA 50 mA Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 1 uF/100 V ceramic cap and a 100 uF/100 V electrolytic cap with ESR = 1 ohm max. at 200 kHz at 25 C. Notes
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
18 Vdc - 75 Vdc Input 3.3 Vdc /15 A Output
Input Specifications (continued)
Parameter I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold Input Over Voltage Lockout
2
Min 16.5 V 15.5 V 76 V
Typ 0.05 A s 17.0 V 16.0 V 78 V
2
Max 0.1 A s 17.5 V 16.5 V 80 V
2
Notes
Output Specifications
Parameter Output Voltage Set Point Load Regulation Line Regulation Regulation Over Temperature (-40deg.C ~ +85deg.C) Ripple and Noise (rms) Ripple and Noise (pk-pk) Output Current Range Output DC Current Limit Short Circuit Surge Transient Turn on Time Overshoot at Turn on Output Capacitance Transient Response Overshoot 75% ~ 50% Max Load Settling Time Overshoot 50% ~ 75% Max Load Settling Time Min 3.25 V 0A 16.5 A 5 mS 0 uF Typ 3.30 V 1 mV 3.3 mV 10 mV 10 mV 40 mV 3A s 12 mS 0% 100 mV 150 uS 100 mV 150 uS
2
Max 3.35 V 6.6 mV 6.6 mV 30 mV 20 mV 80 mV 15 A 25 A 5A s 20 mS 3% 4800 uF 150 mV 300 uS 150 mV 300 uS
2
Notes Vin=48 V, Io=50% load
0-20 MHz BW, with a 0.1 F ceramic cap and a 10 uF tantalum cap at the output. Vin=48 V, in Hiccup Mode.
di/dt=0.1 A/us, Vin=24 Vdc, Ta=25 C, with a 0.1 F ceramic cap and a 10 uF tantalum cap at output.
Note: All specifications are typical at 25 C unless otherwise stated.
General Specifications
Parameter Efficiency Vin=24 V Vin=48 V Switching Frequency Isolation capacitance Remote Sense Compensation Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.30 x 0.896 x 0.49 58.42 x 22.76 x 12.47 40 g 88.5% 89% 240 kHz 90% 90% 90.3% 260 kHz 1500 pF 125 C 4.1 V TBD 280 kHz 10% 110% Measured at normal Vin, full load. Min Typ Max Notes
The total voltage increased by trim and remote sense should not exceed 15%Vo.
Vin=48 V, full load, in Hiccup mode. Calculated Per Bell Core SR-332 (Io=80%load, Ta = 25 C)
-
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
18 Vdc - 75 Vdc Input 3.3 Vdc /15 A Output
Min -0.3 V 2.4 V -0.3 V 2.4 V 0 mA Typ Max 0.8 V 18 V 0.8 V 18 V 0.75 mA Notes 0RCY-60U03L. The remote on/off pin open, Unit off. 0RCY-60U033. The remote on/off pin open, Unit on.
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 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.
511 Rtrimdown = - 10.22[k] delta
Rtrimup =
Note:
Vout Module Trim GND Rtrimdown
(100 + delta) Vo 5.11 - 626 - 10.22[k ] 1 .225 delta
Vout Module Trim GND Rtrimup
delta =
(Vo _ req - Vo ) x 100 [% ]
Vo
Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=3.3 V
Efficiency Data
Efficiency Curve 100.00% 90.00% 80.00% 70.00% 60.00% 50.00% 40.00% 30.00% 20.00% 10.00% 0.00% 0 1.5 3.75 7.5 11.25 15.0 Output Current (A) 18V 24V 48V 75V Efficiency
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
18 Vdc - 75 Vdc Input 3.3 Vdc /15 A Output
Thermal Derating Curves
Vin=24 V, Vo=3.3 V; Maximum FET junction temperature derated to 120 C
Vin=48 V, Vo=3.3 V; Maximum FET junction temperature derated to 120 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
18 Vdc - 75 Vdc Input 3.3 Vdc /15 A Output
Ripple and Noise Waveforms
24 Vdc input, 3.3 Vdc/15 A output
48 Vdc input, 3.3 Vdc/15 A output
Note: Ripple and noise at full load, 0-20 MHz BW, with a 0.1 uF ceramic cap and a 10 uF tantalum cap at the output, and Ta=25 deg C.
Transient Response Waveforms
50%-75%-50% Load Transients at Vin=24 V
50%-75%-50% Load Transients at Vin=48 V
Note: Transients Response at di/dt=0.1 A/us, with a 0.1 F ceramic cap and a 10 uF tantalum cap at output, and 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
18 Vdc - 75 Vdc Input 3.3 Vdc /15 A Output
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 8 Name Vin+ On/Off VinVoutSenseTrim Sense+ Vout+ Function Pin Dia 0.040'' 0.040'' 0.040'' 0.062'' 0.040'' 0.040'' 0.040'' 0.062''
Positive input voltage Input to turn converter on and off, referenced to VinNegative input voltage Negative output voltage Negative remote sense Output voltage trim Positive output voltage Positive output voltage
Notes: 1. Pin 5 must be connected to Vout-. 2. Leave Pin 6 open for nominal voltage. 3. Pin 7 must be connected to Vout+.
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2009 Bel Fuse Inc. Specifications subject to change without notice. 011309
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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