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ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
0RCY-85T Series

RoHS Compliant

Rev.B
Isolated High Efficiency High Power Density Fixed Frequency (300 kHz) Low Cost Input Under Voltage Lockout Safety Approval to UL60950-1 (UL/cUL) Pre-Bias Start Up
Output Over Voltage Shutdown OCP/SCP Over Temperature Protection Remote On/Off Output Voltage Trim Positive/Negative Remote Sense Basic Insulation Pin Length (option)
Description
The 0RCY-85T Series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units provide up to 100 W of output power. These units are designed to be highly efficient and cost-effective. Features include remote on/off, short circuit protection, over current protection, over temperature protection, input under voltage lockout, and output over voltage protection. These converters are provided in a compact, 1/8 brick industry standard package.
Part Selection
Output Voltage 12.0 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V Input Voltage 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V Max. Output Current 8.33 A 20 A 25 A 25 A 25 A 30 A 30 A Max. Output Power 100 W 100 W 85 W 62.5 W 45 W 45 W 36 W Typical Efficiency 91% 91% 90% 89% 88% 86% 84% Model Number Active High 0RCY-85T120 0RCY-85T050 0RCY-85T033 0RCY-85T025 0RCY-85TV80 0RCY-85TV50 0RCY-85TV20 Model Number Active Low 0RCY-85T12L 0RCY-85T05L 0RCY-85T03L 0RCY-85T02L 0RCY-85TV8L 0RCY-85TV5L 0RCY-85TV2L
Notes: 1.Change the last character to "M" to indicate 0.18'' pin length and active low. 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) Input Voltage Transient Protection 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 100 V 18 V 2000 V 100 C 125 C Operating for 100mS 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
48 Vdc Input 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Input Specifications
Parameter Input Voltage Input Current (full load) Vo=12.0 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) Vo=12.0 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 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 -
Typ 48 V 65 mA 65 mA 60 mA 55 mA 50 mA 40 mA 35 mA 6 mA 12 mA 2 mA 0.01 A s 34 V 32 V
2
Max 75 V 3.2 A 3.2 A 2.8 A 2.2 A 1.7 A 1.7 A 1.5 A 90 mA 90 mA 80 mA 75 mA 70 mA 60 mA 50 mA 12 mA 24 mA 4 mA 0.02 A s 35 V 33 V
2
Notes
32 V 30 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.
Output Specifications
Parameter Output Voltage Set Point Vo=12.0 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=12.0 V-3.3 V VO=1.2 V-2.5 V Load Regulation Vo=12.0 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 Min 11.760 V 4.925 V 3.250 V 2.463 V 1.773 V 1.477 V 1.182 V Typ 12.0 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 2 mV 1 mV 8 mV 8 mV 6 mV 4 mV 3 mV 3 mV 2 mV Max 12.24 V 5.075 V 3.350 V 2.538 V 1.827 V 1.523 V 1.218 V 5 mV 3 mV 16 mV 16 mV 12 mV 8 mV 6 mV 6 mV 4 mV Notes
Vin=48 V, Io=50% 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 Vdc Input 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Output Specifications (continued)
Parameter Regulation Over Temperature (-40 C to +85 C) Vo=12.0 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 Output Current Vo=12.0 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 Current Limit Threshold Vo=12.0 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 Short Circuit Surge Transient Ripple and Noise (rms) VO=12.0 V VO=5.0 V VO=1.2 V-3.3 V Ripple and Noise (pk-pk) VO=12.0 V VO=5.0 V VO=3.3 V VO=1.2 V-2.5 V Turn on Time Overshoot at Turn on Output Capacitance VO=12.0 V VO=5.0 V VO=1.2 V- 3.3 V Transient Response Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time 0 uF 0 uF 0 uF 100 mV 80 mV 45 mV 40 mV 0% 300 mV 200 uS 300 mV 200 uS 200 mV 200 uS 200 mV 200 uS 150 mV 200 uS 150 mV 200 uS 150 mV 120 mV 90 mV 80 mV 30 mS 5% 1000 uF 10000 uF 20000 uF 400 mV 300 uS 400 mV 300 uS 300 mV 300 uS 300 mV 300 uS 200 mV 300 uS 200 mV 300 uS 30 mV 25 mV 15 mV 50 mV 50 mV 30 mV Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. 10 A 23 A 30 A 27 A 27 A 32 A 32 A 13 A 29 A 36 A 33 A 33 A 36 A 36 A 2 3A s 16 A 35 A 42 A 40 A 40 A 45 A 45 A 2 5A s 0A 0A 0A 0A 0A 0A 0A 8.33 A 20 A 25 A 25 A 25 A 30 A 30 A Min Typ 50 mV 50 mV 20 mV 15 mV 15 mV 10 mV 10 mV Max 75 mV 75 mV 40 mV 30 mV 30 mV 20 mV 20 mV Notes
-
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
Output Specifications (continued)
Parameter Transient Response Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time
48 Vdc Input 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Min Typ 150 mV 150 uS 150 mV 150 uS 140 mV 150 uS 140 mV 150 uS 130 mV 150 uS 130 mV 150 uS 120 mV 150 uS 120 mV 150 uS Max 200 mV 200 uS 200 mV 200 uS 170 mV 200 uS 170 mV 200 uS 150 mV 200 uS 150 mV 200 uS 140 mV 200 uS 140 mV 200 uS Notes
VO=2.5 V
VO=1.8 V
VO=1.5 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=1.2 V
Note: All specifications are typical at 25 C unless otherwise stated.
General Specifications
Parameter Efficiency VO=12.0 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 Output Voltage Trim Range VO=1.5 V-12 V VO=1.2 V Remote Sense Over Temperature Protection Over Voltage Protection Pre-bias Voltage VO=5.0 V VO=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.30 x 0.896 x 0.395 58.42 x 22.76 x 10.03 27 g 88% 88% 87% 86% 85% 83% 81% 270 kHz 80% Vo 90% Vo 91% 91% 90% 89% 88% 86% 84% 300 kHz 1500 pF 125 C 130% Vo 1,583,176 hours 330 kHz 110% Vo 110% Vo 10% 4.0 V 1.4 V 2.0 V 1.4 V 1.2 V 0.9 V Calculated Per Bell Core SR-332 (Vin=48 V, Vo=3.3 V, Io=20 A, Ta = 25 C) Min Typ Max Notes
Vin=48V, Io=Io, max
The total voltage increased by trim and remote sense should not exceed 10%Vo.
Vin=48V, full load, in hiccup mode.
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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
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 High 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 0RCY-85TxxL. The remote on/off pin open, Unit off. 0RCY-85Txx0. The remote on/off pin open, Unit on. Min Typ Max Notes
Output Trim Equations
Equations for calculating the trim resistor are shown below. 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.
511 Rtrim down 10.22k delta
Vo=1.5 V-12 V:
Vout
Module
Trim Rtrim-down GND
Rtrim up
(100 delta ) Vo 5.11 626 10.22k 1.225 delta
Module
Vout Rtrim-up
Vo=1.2 V:
Trim
Rtrim up
(100 delta ) Vo 5.11 313 10.22k 0.6125 delta
GND
Notes:
delta
Vo _ req Vo 100 %
Vo
Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=1.202 V for 1.2 V output; Vo=1.503 V for 1.5 V output; Vo=1.804 V for 1.8 V; Vo=2.505 V for 2.5 V output; Vo=3.308 V for 3.3 V output; Vo=5.000 V for 5.0 V; Vo=12.000 V for 12 V 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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Efficiency Data
0RCY-85T12x EFFICIENCY CURVE
0RCY-85T05x EFFICIENCY CURVE
94% 90%
EFFICIENCY
94% 90%
EFFICIENCY
36V 48V 75V
86% 82% 78% 74% 70% 1.60 3.20 4.80 6.00 7.20 8.33 OUTPUT CURRENT (A)
86% 82% 78% 74% 70% 4 8 12 16 20 OUTPUT CURRENT (A)
36V 48V 75V
0RCY-85T03x EFFICIENCY CURVE
0RCY-85T02x EFFICIENCY CURVE
90% 86%
EFFICIENCY
36V 48V 75V
90% 86%
EFFICIENCY
82% 78% 74% 70% 5 10 15 20 25 OUTPUT CURRENT (A)
82% 78% 74% 70% 5 10 15 20 25 OUTPUT CURRENT (A)
36V 48V 75V
0RCY-85TV5x EFFICIENCY CURVE
0RCY-85TV8x EFFICIENCY CURVE 88% 84%
EFFICIENCY
88% 84%
EFFICIENCY
36V 48V 75V
80% 76% 72% 68% 64% 60% 5 10 15 20 25 OUTPUT CURRENT (A)
80% 76% 72% 68% 64% 60% 6 12 18 24 30 OUTPUT CURRENT (A)
36V 48V 75V
0RCY-85TV2x EFFICIENCY CURVE 88% 84% 80%
EFFICIENCY
76% 72% 68% 64% 60% 6 12 18 24 30 OUTPUT CURRENT (A)
36V 48V 75V
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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Thermal Derating Curves
Vin=48V, with maximum junction temperature of semiconductors derated to 120 degree C.
0RCY-85T12x
0RCY-85T05x
0RCY-85T03x
0RCY-85T02x
0RCY-85TV8x
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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Thermal Derating Curves (continued)
0RCY-85TV5x
0RCY-85TV2x
Thermal Reference
Note: TH1 and TH2 are hot spots which should not exceed 118 degree 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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Ripple and Noise Waveforms
Ripple and noise at max load 12 Vdc/8.33 A output
Ripple and noise at max load 5.0 Vdc/20 A output
Ripple and noise at max load 3.3 Vdc/25 A output
Ripple and noise at max load 2.5 Vdc/25 A output
Ripple and noise at max load 1.8 Vdc/25 A output .
Ripple and noise at max load 1.5 Vdc/30 A 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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Ripple and Noise Waveforms (continued)
Ripple and noise at max load 1.2 Vdc/30 A output Note: Ripple and Noise at 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
Transients 50% to 25% load 12 Vdc output
Transients 25% to 50% load 12 Vdc 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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Transient Response Waveforms (continued)
Transients 50% to 25% load 5.0 Vdc output
Transients 25% to 50% load 5.0 Vdc output
Transients 50% to 25% load 3.3 Vdc output
Transients 25% to 50% load 3.3 Vdc output
Transients 50% to 25% load 2.5 Vdc output
Transients 25% to 50% load 2.5 Vdc 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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick Converter
Transient Response Waveforms (continued)
Transients 50% to 25% load 1.8 Vdc output
Transients 25% to 50% load 1.8 Vdc output
Transients 50% to 25% load 1.5 Vdc output
Transients 25% to 50% load 1.5 Vdc output
Transients 50% to 25% load 1.2 Vdc output
Transients 25% to 50% load 1.2 Vdc output
Note: Transient response at 48 V input, di/dt=0.1 A/uS, with external 10 uF tantalum cap and 1 uF ceramic 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 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 8 Function Vin+ Remote On/Off VinVoutSenseTrim Sense+ Vout+ Pin Dia 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.
2009 Bel Fuse Inc. Specifications subject to change without notice. 052609
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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