ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
RoHS Compliant
• • • • • • •
0RQB-C5T14x
• • • • • • • • Isolated
Preliminary
Over Temperature Protection SCP/OCP Low Cost Remote On/Off Basic Isolation Positive/Negative Remote Sense Output Voltage Trim
Fixed Frequency (250 kHz) High Efficiency High Power Density Input Under-Voltage Lockout Input Over-Voltage Lockout Output Over-Voltage Shutdown
Class 2, Category 2, Isolated DC/DC Converter (refer to IPC-9592)
Applications
• • • Networking Computers and peripherals Telecommunications
Description
The 0RQB-C5T14x is an isolated DC/DC converter that operate from a nominal 48V source. This unit will provide up to 140W of output power from a nominal 48V input. This unit is designed to be highly efficient and low cost . Features include remote on/off, over current protection and overvoltage protection. The converter is provided in an industry standard quarter brick package.
Part Selection
Output Voltage 14 Vdc Input Voltage 36 Vdc - 75Vdc Max. Output Current 10 A Max. Output Power 140 W Typical Efficiency 93.5% Model Number Active High 0RQB-C5T140 Model Number Active Low 0RQB-C5T14L
Note: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation 0 R QB – C5 T 14 x
12 3 4 5 6 7
1---Through hole 2---RoHS 6, change “R” to “7” means RoHS 5 3---Series name 4---Series code 5---Input range (36-75V) 6---Output voltage (14V) 7---Suffix
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Parameter Min -0.3 -0.3 -40 -55 Typ Max 80 100 18 1500 85 125 Unit V V V V °C °C 100mS maximum Notes
Absolute Maximum Ratings
Continuous non-operating Input Voltage Input Transient Voltage Remote On/Off I/O Isolation Voltage Ambient Temperature Storage Temperature
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device.
Input Specifications
Parameter Operating Input Voltage Input Current (full load) 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 32.5
2
Min 36 -
Typ 48 80 10 35 10 34.5 33.5
Max 75 5.0 120 20 50 15 1 35.5
Unit V A mA mA mA mA As V V
2
Notes Vin=36 V
With simulated source impedance of 10 uH, 5 Hz to 20 MHz; Use a 1uF/100V ceramic capacitor and a 100uF/100V electrolytic capacitor with ESR=1 ohm max, at 200KHz@25°C.
CAUTION: This converter is not internally fused. An input line fuse must be used in application. Recommend a fast-acting fuse with maximum rating of 7A on system board. Refer to the fuse manufacture’s datasheet for further information. Notes: 1. This converter has internal C-L-C (0.47uF-0.47uH-8.8uF) filter. 2. All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter Output Voltage Set Point Load Regulation Line Regulation Regulation Over Temperature (-40deg.C-85deg.C) Ripple and Noise (pk-pk) Ripple and Noise (rms) Min 13.72 Typ 14 ±14 ±14 Max 14.28 ±28 ±28 ±140 180 50 Unit V mV mV mV mV mV 0 - 20 MHz BW, with 1 uF ceramic load capacitor and a 10 uF tantalum capacitor at output Notes Vin=48V, Io=50% load at 25C ambient.
±70 120 25
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min Typ Max 220 0 10 Unit mV A A As mS mS mS % uF Enable from Vin Enable from on/off
2
Output Specifications (continued)
Parameter Output Ripple and Noise(pk-pk) under worst case Output Current Range Output DC Current Limit Short Circuit Surge Transient Rise Time Turn on Time Overshoot at Turn on Output Capacitance Transient Response
△V25%~50% of
Notes over all operating input voltage, load and ambient temperature condition
10.5 6
12
14
5 12
30 25 0 0
60 50
3 680
Overshoot Settling Time Overshoot Settling Time
-
400 200 400 200
600 300 600 300
mV uS mV uS
Max Load
△V50%~25% of
Max Load
di/dt=0.1A/us, Vin=48 Vdc, with a 1 µF ceramic capacitor and a 10 uF Tantalum capacitor at output, Ta=25 °C.
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter Efficiency Switching Frequency Over Temperature Protection Over Voltage Protection(Static) Weight FIT Dimensions Inches (L × W × H) Millimeters (L × W × H) Isolation characteristics Input to Output Input to Case Output to Case Isolation Resistance Isolation Capacitance 10M 3900 1500 1500 500 V V V ohm pF 2.30 x 1.45 x 0.50 58.42 x 36.83 x 12.69 Min 91.5 Typ 93.5 250 125 17 48 TBD Max Unit % kHz °C V g Calculated Per Bell Core SR-332 (Vin=48V, Vo=12V, Io=9.6A, Ta = 25 9 °C, FIT=10 /MTBF) This voltage is achieved by trimming up output slowly Notes Vin=48V, full 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
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
95.00% 90.00% EFFICIENCY 85.00% 80.00% 75.00% 70.00% 1A 2.5A 5A 7.5A 10A 36 V 48 V 75V
Efficiency Data
OUTPUT CURRENT(A)
Thermal Derating Curve
Maximum junction temperature of semiconductors derated to 120 degree C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
4
ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curve (continued)
Derating curve under 48V input
Vin=24V
Ripple and Noise Waveform
Note: Ripple and noise at full load, 48Vdc input, 14Vdc/10A output and Ta=25 deg C, and with a 1uF ceramic cap and a 10 uF Tantalum cap at output. .
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
5
ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Transients Responses Waveforms
Vout= 14V 25%-50% Load Transients at Vin=48V@Ta=25℃
Vout= 14V 50%-25% Load Transients at Vin=48V@Ta=25℃
Note: Transients response at di/dt=0.1 A/us, with a 1 µF ceramic capacitor and a 10 uF tantalum capacitor 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
6
ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Active Low Active High Min -0.3 2.4 -0.3 2.4 0 Typ Max 0.8 18 0.8 18 1 Unit V V V V mA Notes 0RQB-C5T14L. The remote on/off pin open, Unit off. 0RQB-C5T140. The remote on/off pin open, Unit on.
Remote On/Off
Parameter Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Current Sink
Recommended remote on/off circuit for active low
Vin+ On/off
Vin+
On/off
Vin-
Vin-
Control with open collector/drain circuit
Vin+
Vcc
Control with photocoupler circuit
Vin+
On/off
On/off
Vin-
Vin-
Control with logic circuit
Permanently on
Remote On/Off(continued)
Recommended remote on/off circuit for active high
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Control with open collector/drain circuit
Vin+
Vcc
Control with photocoupler circuit
Vin+
On/off
On/off
Vin-
Vin-
Control with logic circuit
Permanently on
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Output Trim Equations
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected between the Trim pin and Sense (-) pin. The Trim Up resistor should be connected between the Trim pin and the Sense (+). Only one of the resistors should be used for any given application. Minimum trim down voltage is 12.6V Maximum trim up voltage is 15.4V. The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.
Sense(+)
Rtrimdown =
511 −10.22[kΩ] delta
Module
Trim Rtrimdown Sense(-)
(100+ delta) ⋅Vo⋅ 5.11− 626 −10.22[kΩ] Rtrimup= 1.225⋅ delta
Sense(+) Rtrimup M odule Trim Sense(-)
Note:
delta =
(Vo _ req − Vo) × 100[%]
Vo
Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=14.000 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Remote Sense
This module has remote sense compensation feature. It can minimize the effects of resistance between module’s output and load in system layout and facilitates accurate voltage regulation at load terminals or other selected point. 1. The remote sense lines carries very little current and hence do not require a large cross-sectional area. 2. This module compensates for a maximum drop of 10% of the nominal output voltage. 3. If the unit is already trimmed up, the available remote sense compensation range should be correspondingly reduced. The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. 4. When using remote sense compensation, all the resistance, parasitic inductance and capacitance of the system are incorporated within the feedback loop of this module. It can make an effect on the module's compensation, affecting the stability and dynamic response. A 0.1uF ceramic capacitor can be connected at the point of load to de-couple noise on the sense wires. 5. Recommend the connection of remote sense compensation as below figure. There are a resistor RS+ (100 ohm) from Vo+ to Sense+ and a resistor RS- (51 ohm)) from Vo- to Sense- inside of this module.
Vo+
RS+
Sense+ Load SenseRS-
V o-
6. If not using remote sense compensation, please connect sense directly to output at module's pin, that is, connect sense+ to Vo+ and sense- to Vo- at module's pin, the shorter the better. See below figure.
V o+
RS+
Sense+ Load SenseRS-
Vo-
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Over Current Protection
To provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting for a few mili-seconds. If the over-current condition persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 400mS. The module operates normally when the output current goes into specified range. The typical average output current is 0.5A during hiccup.
Vin=48V
Expansion of on time portion
Over Voltage Protection
The output over voltage protection consists of circuitry that monitors the voltage on the output terminals. If the voltage on the output terminals exceeds the over voltage protection threshold, the module will shutdown into hiccup mode and restart once every 800mS. The module operates normally when the fault is cleared. Test setup: Waveform:
R=10K
Vo+ K Trim R Vo-
Sense+ K Trim R
48Vin,10A Load
Sense-
CH1: Output voltage waveform CH2: Input voltage waveform CH3: Output Current waveform
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Over Temperature Protection
The OTP is achieved by thermistor RT1 and the threshold is set at 120C in non-latch mode; the hottest component Q13 reaches 130C with 100LFM air flow correspondingly. It will restart automatically when the temperature falls down to 110C. The protecting point will be varied a little under different conditions (air flow, ambient temperature, input voltage, load...).
Input Under-voltage Lockout
Input Current
Under-voltage Lockout
Voltage Falling Voltage Rising
V1=33.5V V2=34.5V
V1
V2
Input Voltage (V)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
11
ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 8 Function Vin(+) On/Off Vin(-) Vo(-) Sense(-) TRIM Sense(+) Vo(+) Pin Size 0.040’’ 0.040’’ 0.040’’ 0.060’’ 0.040’’ 0.040’’ 0.040’’ 0.060’’
Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered using a peak solder temperature of no more than 260 ºC for less than 5 seconds. Note: 1) All Pins: Material - Copper Alloy; Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate. 2) Undimensioned components are shown for visual reference only. 3) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm).
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
12
ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input 14 Vdc /10 A Output, 1/4 Brick Converter Oct. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Revision History
Date 2011-10-7
Revision PA First release
Changes Detail
Approval JZ Wang
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
©2010 Bel Fuse Inc. Specifications subject to change without notice.100711
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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