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ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
RoHS Compliant
* * * * * * *
0RQB-C5U12x
* * * * * * * * * Isolated
Rev.D
Over Temperature Protection SCP/OCP Low Cost Remote On/Off Basic Isolation Positive/Negative Remote Sense Output Voltage Trim
Fixed Frequency (260 kHz) High Efficiency High Power Density Input Under-Voltage Lockout Input Over-Voltage Lockout Output Over-Voltage Shutdown
Class 1, Category 2, Isolated DC/DC Converter (refer to IPC-9592) UL60950-1 Recognized (UL/cUL) (Pending)
Applications
* * * Networking Computers and peripherals Telecommunications
Description
The 0RQB-C5U12x is isolated dc/dc converter that operates from a wide input range (18 Vdc - 75 Vdc) and can cover both 24 Vdc and 48 Vdc input range. This unit will provide up to 144 W of output power. This unit is 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. This converter is provided in an industry standard 1/4 brick package.
Part Selection
Output Voltage 12 Vdc Input Voltage 18 Vdc - 75Vdc Max. Output Current 12 A Max. Output Power 144 W Typical Efficiency 93% Model Number Active High 0RQB-C5U120 Model Number Active Low 0RQB-C5U12L
Note: Add "G" suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation 0 R QB - C5 U 12 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 (18-75V) 6---Output voltage (12V) 7---Suffix
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
1
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
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
Parameter Continuous 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 Input Over Voltage Lockout
2
Min 18 16.5 15.5 76
Typ 24/48 9.2 2.2 100 30 40 10 17.0 16 78
Max 75 130 45 60 15 0.5 17.5 16.5 80
Unit V A A mA mA mA mA As V V V
2
Notes Vin=18 V Vin=75 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@25C.
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 18A 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 11.76 Typ 12.0 12 12 60 100 30 Max 12.24 24 24 100 160 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
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
2
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min 0 15 5 Typ 3 50 50 0 Max 180 12 20 5 10 70 70 3 680 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
0
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 F ceramic capacitor and a 10 uF Tantalum capacitor at output, Ta=25 C.
Note: All specifications are typical at nominal input, full load at 25C unless otherwise stated.
General Specifications
Parameter Efficiency Switching Frequency Over Temperature Protection Over Voltage Protection(Static) Weight FIT Dimensions Inches (L x W x H) Millimeters (L x W x H) Isolation characteristics Input to Output Input to Case Output to Case Isolation Resistance Isolation Capacitance 10M 1500 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 91 240 Typ 93 93 260 125 14.5 48 387 Max 280 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=24V, full load Vin=48V, 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
3
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Efficiency Data
Efficiency Curve 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1.2 3 6 9 12 Output Current (A) 18V 24V 48V 75V Efficiency
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
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curve (continued)
Derating curve under normal input
Vin=24V
Derating curve under worse case input
Vin=48V
Vin=75V
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
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curve (continued)
Temperature reference points on top side
Temperature reference points on bottom side
Ripple and Noise Waveform
24 Vdc input, 12 Vdc/12 A output
48 Vdc input, 12 Vdc/12 A output
Note: Ripple and noise at full load, 0-20MHz BW, with a 1uF ceramic capacitor and a 10 uF tantalum capacitor at the 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
6
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Transients Responses Waveforms
Vin=24V Vout= 12V 25%-50% Load Transients at Ta=25
Vin=48V
Vin=24V Vout= 12V 50%-25% Load Transients at Ta=25
Vin=48V
Note: Transients response at di/dt=0.1 A/us, with a 1 F 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
7
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Startup & Shutdown
Rise time
Vout= 12V/12A at Vin=48V@Ta=25 Startup time
Startup from Vin Ch1: Vo Ch3: Vin Test Condition: 48Vin, 12A Load
Startup from on/off Ch1: Vo Ch3: on/off Test Condition: 48Vin, 12A Load
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
8
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Startup & Shutdown (continued)
Shutdown
Test Condition: 48Vin,12A Load
Remote On/Off
Parameter 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 2.4 -0.3 2.4 0 Typ Max 0.8 18 0.8 18 1 Unit V V V V mA Notes 0RQB-C5U12L. The remote on/off pin open, Unit off. 0RQB-C5U120. The remote on/off pin open, Unit on.
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
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
9
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
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
Layout
Layout of components on top side
Layout of components on bottom side
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
10
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
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 10.8V Maximum trim up voltage is 13.2V. The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.
Sense(+)
Rtrimdown =
511 -10.22[k] delta
Module
Trim Rtrimdown Sense(-)
Rtrimup=
(100+ delta) Vo 5.11- 626 -10.22[k] 1.225 delta
Sense(+) Rtrimup Module Trim Sense(-)
Note:
delta =
(Vo _ req - Vo) x 100[%]
Vo
Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=12.000 V
400 Trim resi stor value Rtrim_down(KOhm)
Trim resi stor value,Rtrim_up(KOhm) 5000 4500 4000 3500 3000 2500 2000 1500 1000 500
360 320 280 240 200 160 120 80 40 0 9.8 10.02 10.24 10.46 10.68 10.9 11.12 11.34 11.56 11.78 Adjusted output voltage Vo,adj (V) 12
0
12
12.12 12.24 12.36 12.48 12.6 12.72 12.84 12.96 13.08 13.2 Adjusted output voltage Vo,adj(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
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
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
12
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
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,12A Load
Sense-
CH1: Output voltage waveform CH2: 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
13
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
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=16V V2=17V
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
14
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Safety & EMC
Safety 1. Material flammability 2. TUV Certification 3. UL Certification EMC 1. Surge IEC61000-4-5 2. DC-DIP IEC61000-4-29 3. Conductive EMI EN55022 class A Compliance to EN55022 class A (both q.peak and average) with the following inductive and capacitive filter Setup:
C Y12 C Y22 R Y22 R Y12 CY32 RY32 CY42 RY42
UL94V-0 EN60950-1 UL60950-1
+Vin C X1 -Vin
+Vout CX3 CX4 -Vou t
3 1 R Y11 C Y11
4 T1A C X2 2 R Y21 C Y21
3 1
4 T2A
Test m odule
2 RY31 RY41 CY31 CY41
Item 1 2 3 4 5 6 7 8 9 10
Designator CX1,CX2 C3X RY21,RY22 CY21,CY22 RY31,RY32 CY31,CY32 RY41,RY42 CY41,CY42 T1A T2A
Parameter 2.2uF/100V,ceramic 100uF/100V, AL cap 0R,0805 6800pF/2000V,ceramic 51R,0805 1500pF/2000V,ceramic 0R,0805 1500pF/2000V,ceramic 1.0mH, common mode 2.2mH,common mode
Vendor Murata Nichicon SEI Johanson SEI Johanson SEI Johanson
Vendor P/N GRF32ER72A225KA11L UVZ2A101MPD 202R29W682KV4E 302R29W152KV4E 302R29W152KV4E
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
15
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Safety & EMC (continued)
Positive
Negative
Fundamental Circuit Diagram
1 8
4
Driver 3
Driver 7
2
Controller
Choke Capacitor Resistor
Isolated Feedback
5 6
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
16
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /12 A Output, 1/4 Brick Aug. 19, 2010
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 C 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
17
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 12 Vdc /17 A Output, 1/4 Brick Aug. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Revision History
Date 2008-06-24 2009-03-10 2009-12-29 2010-08-19
Revision PA B C D First release
Changes Detail
Approval JZ Wang JZ Wang JZ Wang JZ Wang
Updated MD, TR, NR and Efficiency, add TD Update outline and MD Add Shutup&Shutdown, Remote on/off, Layout, Remote sense, OCP, OVP, OTP, UVLO, Safety&EMC and Fundamental circuit diagram.
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2010 Bel Fuse Inc. Specifications subject to change without notice. 081910
18
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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