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| ISOLATED DC/DC CONVERTERS 48 Vdc Input 3.3 Vdc /12 A Output VRYB-40T03x * * * * * * RoHS Compliant * * * * * * Rev.A Isolated High Efficiency High Power Density Fixed Frequency (400 kHz) Low Cost Input Under-Voltage Lockout Output Over-Voltage Shutdown OCP/SCP Over Temperature Protection Remote On/Off Output Voltage Trim Positive/Negative Remote Sense Description The VRYB-40T03x is isolated dc/dc converter that operates from a nominal 48 Vdc source. This unit will provide up to 40 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and low cost. Features include remote on/off, over current protection and under-voltage lockout. This converter is provided in an industry SIP package. Part Selection Output Voltage 3.3 Vdc Input Voltage 36 Vdc - 75 Vdc Max. Output Current 12 A Max. Output Power 40 W Typical Efficiency 89% Model Number Active High VRYB-40T033 Model Number Active Low VRYB-40T03L 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 1500 V 85 C 125 C Notes Input Specifications Parameter Input Voltage Input Current (full load) Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (rms) Input Reflected Ripple Current (pk-pk) I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 2 Min 36 V 32 V 30 V Typ 48 V 40 mA 8 mA 4 mA 25 mA 0.01 A s 34 V 32 V 2 Max 75 V 1.5 A 60 mA 15 mA 8 mA 50 mA 0.02 A s 35 V 33 V 2 Notes 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. 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 3.3 Vdc /12 A Output Output Specifications Parameter Output Voltage Set Point Output Voltage Regulation (Load) Output Voltage Regulation (Line) Regulation Over Temperature (-40 deg.C - 85 deg.C) Output Current Current Limit Threshold Ripple and Noise (pk-pk) Ripple and Noise (rms) Short Circuit Surge Transient Turn on Time Overshoot at Turn On Output Capacitance Transient Response 25% - 50% Max Load Settling Time 50% - 25% Max Load Settling Time Vo=3.3 V 120 mV 100 uS 120 mV 100 uS 160 mV 150 uS 160 mV 150 uS di/dt=0.1 A/us, Vin=48 Vdc, Ta=25C, with a 1 F ceramic capacitor and a 220 uF Tantalum capacitor at the output. Min 3.250 V 0A 14 A 220 uF Typ 3.300 V 6 mV 2 mV 20 mV 18 A 40 mV 7 mV 3A s 0% 2 Max 3.350 V 12 mV 5 mV 40 mV 12 A 21 A 80 mV 15 mV 5A s 40 mS 5% 10000 uF 2 Notes Vin=48 V, Io=50%Load 0-20 MHz BW, with a 1 uF ceramic capacitor and a 220 uF tantalum capacitor at the output. Note: All specifications are typical at 25 C unless otherwise stated. General Specifications Parameter Efficiency Switching Frequency Isolation capacitance Output Voltage Trim Range Remote Sense Compensation Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.0 x 0.5 x 0.348 50.80 x 12.70 x 8.84 10.5 g Min 86% 360 kHz 115% Typ 89% 400 kHz 1000 pF 80% 125 C 140% TBD Max 440 kHz 110% 10% Calculated Per Bell Core SR-332 (Vin=48 V, Vo=3.3 V, Io=9.6 A, Ta = 25 C) The total voltage increased by trim and remote sense should not exceed 10%Vo. 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 3.3 Vdc /12 A Output 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 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 VRYB-40T03L. The remote on/off pin open, Unit off. VRYB-40T033. The remote on/off pin open, Unit on. 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 Vout Module Trim GND Rtrimdown Rtrimup = (100 + delta) Vo 5.11 - 626 - 10.22[k] 1.225 delta Vout Module Trim GND Rtrimup Note: (Vo _ req - Vo ) x 100 [% ] delta = Vo Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=3.308 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 Vdc Input 3.3 Vdc /12 A Output Efficiency Data EFFICIENCY CURVE 90% 86% 82% EFFICIENCY 78% 74% 70% 66% 62% 58% 54% 50% 2.00 4.00 6.00 8.00 10.00 12.00 OUTPUT CURRENT (A) 36V 48V 75V VRYB-40T03x Thermal Derating Curve VRYB-40T03x 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 3.3 Vdc /12 A Output Transient Response Waveforms Vout=3.3 V 50% to 25% Load Transients Vout=3.3 V 25% to 50% Load Transients Note: Transient Response at Vin=48 V, di/dt=0.1 A/uS, with external 220 uF tantalum capacitor and 1 uF ceramic capacitor at the output, Ta=25 deg C. Ripple and Noise Waveform . Note: Ripple and noise at full load, 48 Vdc input, 3.3 Vdc/12 A output and Ta=25 deg C, and with a 1uF ceramic capacitor and a 220 uF 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 3.3 Vdc /12 A Output Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 9 10 Function Vin(+) On/Off Vin(-) Sense(-) Vout(-) Vout(-) Trim Vout(+) Vout(+) Sense(+ ) RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. (c)2007 Bel Fuse Inc. Specifications subject to change without notice. 081007 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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