BEL 0RCY

ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
0RCY-65U03x
RoHS Compliant
Rev.F
Features
•
Isolated
•
Output Over-Voltage Shutdown
•
High Efficiency
•
Output Voltage Trim
•
High Power Density
•
OCP/SCP
•
Fixed Frequency (260 kHz)
•
Over Temperature Protection
•
Low Cost
•
Remote On/Off
•
Input Under-Voltage Lockout
•
Positive/Negative Remote Sense
•
Input Over-Voltage Lockout
•
Basic Insulation
•
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 0RCY-65U03x is part of the isolated dc/dc converters that operates 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 66 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
20 A
Max. Output
Power
66 W
Typical
Efficiency
90%
Model Number
Active High
0RCY-65U033
Model Number
Active Low
0RCY-65U03L
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
0 R CY – 65 U 03 x
1 2
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 3.3V
7--- Option, “x” of the model part number to be 0-9, A-Z, which will represent the special request of
customer.
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Absolute Maximum Ratings
Parameter
Continuous Input Voltage
Input Transient Voltage
Remote On/Off
I/O Isolation Voltage
Min
Typ
Max
Unit
-0.3
-
80
V
-
-
100
V
-0.3
-
18
V
-
-
1500
V
Ambient Temperature
-40
-
85
°C
Storage Temperature
-55
-
125
°C
Notes
100 mS maximum
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
Min
18
Typ
24/48
Max
75
Unit
V
Input Current (full load)
-
4.3
5.0
A
Input Current (no load)
-
65
100
mA
Remote Off Input Current
-
10
15
mA
Input Reflected Ripple Current
(rms)
-
7
10
mA
Input Reflected Ripple Current
(pk-pk)
-
30
50
mA
I t Inrush Current Transient
-
0.05
0.1
As
Turn-on Voltage Threshold
16
16.8
17.5
V
Turn-off Voltage Threshold
15
15.8
16.5
V
Input Over Voltage Lockout
76
78
80
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.
2
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 8A on system board. Refer to the fuse
manufacture’s datasheet for further information.
Notes: 1. This converter has internal C-L-C (0.47uF-1.0uH-0.47uF+2.2uF) filter.
2. For recommended external input filter, please refer to Safety section.
3. All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Min
3.234
Typ
3.3
Max
3.366
Unit
V
Load Regulation
-
±3.3
±10
mV
Line Regulation
-
±3.3
±10
mV
Regulation Over Temperature
(-40deg.C-85deg.C)
-
±10
±33
mV
Ripple and Noise (pk-pk)
-
50
80
mV
Ripple and Noise (rms)
-
15
25
mV
Ripple and Noise (pk-pk)
under worst case
-
-
150
mV
Notes
Vin=48V, Io=50% load
0-20 MHz BW, with a 1µF ceramic
capacitor and a 10uF Tantalum cap at
output.
over all operating input voltage, load
and temperature conditions.
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Output Specifications (continued)
Parameter
Min
Typ
Max
Unit
Output Current Range
0
-
20
A
Output DC Current Limit
23
-
35
A
Short Circuit Surge Transient
-
3
5
As
Rise Time
-
5
-
mS
10
15
30
mS
Ton(Enable form Vin)
10
20
30
mS
Ton(Enable form ON/OFF)
Overshoot at Turn on
-
0
3
%
Output Capacitance
0
-
4800
uF
Turn on Time
Notes
2
Transient Response
△V50%~75% of
Overshoot
-
150
250
mV
Max Load
Settling Time
-
200
350
uS
△V75%~50% of
Overshoot
-
150
250
mV
Max Load
Settling Time
-
200
350
uS
di/dt=0.1A/us, Vin=48Vdc, Ta=25°C,
with a 1µF ceramic capacitor and a
10uF Tantalum cap at the output.
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter
Min
88
Typ
90
Max
-
Unit
%
86
88
-
%
Switching Frequency
240
260
280
kHz
Output Voltage Trim Range
90
-
110
%Vo
Over Temperature Protection
-
125
-
°C
Over Voltage Protection(Static)
-
4.1
-
V
Weight
-
40
-
g
Efficiency
FIT
TBD
-
2.30 x 0.90 x 0.50
58.42 x 22.76 x 12.72
-
Notes
Vin=48V, full load
Vin=24V, full load
This voltage is achieved by trimming
up output slowly
Calculated Per Bell Core SR-332
(Vin=48 V, Vo=3.3 V, Io=16 A, Ta = 25
9
°C, FIT=10 /MTBF)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Isolation characteristics
Input to Output
-
-
1500
V
Input to Case
-
-
1500
V
Output to Case
-
-
500
V
10M
-
-
1500
Isolation Resistance
Isolation Capacitance
ohm
-
pF
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Efficiency Data
Efficiency Curve
95.00%
Efficiency
90.00%
18V
24V
48V
60V
75V
85.00%
80.00%
75.00%
70.00%
3
6
9
12
15
18
20.0
Output Current (A)
Thermal Derating Curves
Maximum junction temperature of semiconductors derated to 120 degree C.
Derating curve under 18V input
Derating curve under 75V input
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Thermal Derating Curves (continued)
Temperature reference points on top side
Temperature reference points 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
5
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Ripple and Noise Waveform
.
24 Vdc input, 3.3Vdc/20A output
48 Vdc input, 3.3Vdc/20A output
Note: Ripple and Noise at full load, Ta=25°C, with a 1µF ceramic capacitor and a 10uF Tantalum cap at the
output.
Transient Response Waveforms
50%-75%-50% Load Transients at Vin=24V
50%-75%-50% Load Transients at Vin=48V
Note: Transient Response at di/dt=0.1A/uS, Ta=25°C, with 1uF ceramic cap and 10uF 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
6
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick
Nov. 16, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Startup & Shutdown
Rise Time
Vout= 3.3V full load at [email protected]=25℃
Vout= 3.3V full load at [email protected]=25℃
Startup time
Startup from Vin
Ch1: Vo, Ch3: Vin
Vout= 3.3V full load at [email protected]=25℃
Startup from on/off
Ch1: Vo, Ch3: on/off
Vout= 3.3V full load at [email protected]=25℃
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 3.3 Vdc /20 A Output, 1/8 Brick
Nov. 16, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Startup & Shutdown (continued)
Startup time (continued)
Startup from Vin
Ch1: Vo, Ch3: Vin
Vout= 3.3V full load at [email protected]=25℃
Startup from on/off
Ch1: Vo, Ch3: on/off
Vout= 3.3V full load at [email protected]=25℃
Shutdown
Vout= 3.3V full load at [email protected]=25℃
Vout= 3.3V full load at [email protected]=25℃
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Remote On/Off
Parameter
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Active Low
Active High
Current Sink
Min
-0.3
Typ
-
Max
0.8
Unit
V
2.4
-
18
V
-0.3
-
0.8
V
2.4
-
18
V
0
-
0.75
mA
Notes
0RCY-65U03L. The remote on/off pin
open, Unit off.
0RCY-65U033. The remote on/off pin
open, Unit on.
Recommended remote on/off circuit for active low
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Control with open collector/drain circuit
Control with photocoupler circuit
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Vcc
Control with logic circuit
Permanently on
Recommended remote on/off circuit for active high
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Control with open collector/drain circuit
Control with photocoupler circuit
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Vcc
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
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 2.97V
Maximum trim up voltage is 3.63V.
The total voltage increased by trim and remote sense should not exceed 5% of the nominal output voltage.
Sense(+)
511
Rtrimdown =
− 10.22[kΩ]
delta
Module
Trim
Rtrimdown
Sense(-)
Sense(+)
(100 + delta) ⋅Vo ⋅ 5.11 − 626
Rtrimup =
− 10.22[kΩ]
1.225 ⋅ delta
Rtrimup
Module
Trim
Sense(-)
Note:
delta =
(Vo _ req − Vo ) × 100 [% ]
Vo
300
1500
270
1350
240
1200
Trim resistor value,Rtrim_up(KOhm)
Trim resistor value Rtrim_down(KOhm)
Vo_req=Desired (trimmed) output voltage [V]
Output voltage Vo=3.3 V
210
180
150
120
90
60
30
0
2.64 2.71
1050
900
750
600
450
300
150
2.77 2.84 2.9 2.97 3.04 3.1 3.17 3.23
Adjusted output voltage Vo,adj (V)
3.3
0
3.3
3.33 3.37
3.4 3.43 3.46 3.5 3.53 3.56
Adjusted output voltage Vo,adj(V)
3.6
3.63
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
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+
(30.1 ohm) from Vo+ to Sense+ and a resistor RS- (10.5 ohm)) from Vo- to Sense- inside of this module.
RS+
Vo+
Sense+
Load
RS-
Sense-
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.
RS+
V o+
Sense+
Load
RS-
Sense-
Vo-
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
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 overcurrent 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 5A during
hiccup.
CH1: Output voltage waveform
CH4: output current waveform
Test at: 48Vdc input, with a Rout (0.022ohm)
Expansion of on time portion of above figure
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Over Voltage Protection
The output overvoltage 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 400mS. The module operates normally when the fault is cleared.
Note: Due to maximum duty cycle limt, output voltage can not be trimed up to OVP set point in low line input.
Test setup:
Sense+
K
Trim
R
Sense-
R=36k ohm
CH1: Output voltage 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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Over Temperature Protection
The OTP is achieved by thermistor RT and the threshold is set at 125C in non-latch mode; the hottest component
Q1 reaches 125C with 100LFM air flow correspondingly. It will restart automatically when the temperature falls
down to 100C. The protecting point will be varied a little under different conditions (air flow, ambient
temperature,input voltage, load...).
The hottest component on the top side: Q1
The thermistor on the bottom side: RT
Input Under-voltage Lockout
Input Current
Under-voltage Lockout
Voltage Falling
V1=16V
V2=17V
Voltage Rising
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Safety & EMC
Safety
1. Material flammability
2. UL Certification
UL94V-0
UL60950-1
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
C4
+Vin
T1
C1
C2
C3
Conv.positive
input
Conv.negative
input
-V in
T1
C5
Item
Designator
Parameter
Vendor
Vendor P/N
1
C1
2.2uF/100V,ceramic
Murata
GRF32ER72A225KA11L
2
C2
47uF/100V, AL cap
Nichicon
UUJ2A470MNL1MS
3
C3
100uF/100V, AL cap
Nichicon
UVZ2A101MPD
4
C4
1000pF/2000V,ceramic
Johanson
202R18W102KV4E-****-RC
5
C5
1000pF/2000V,ceramic
Johanson
202R18W102KV4E-****-RC
6
T1
1.3mH, common mode
Pulse
P0402NL
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Safety & EMC (continued)
Positive:
Negative:
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 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Mechanical Outline
Pin Connections
Pin
Name
Function
Pin Dia
0.040’’
Positive input voltage
Input to turn converter
2
On/Off
0.040’’
on and off, referenced
to Vin3
Vin0.040’’
Negative input voltage
4
VoutNegative output voltage 0.060’’
5
Sense- Negative remote sense
0.040’’
6
Trim
0.040’’
Output voltage trim
7
Sense+ Positive output voltage
0.040’’
8
Vout+
0.060’’
Positive output voltage
Note: 1. Pin 5 must be connected to Vout(-).
2. Leave Pin 6 open for nominal voltage.
3. Pin 7 must be connected to Vout(+).
1
Vin+
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
17
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Nov. 16, 2010
Revision History
Date
Revision
Changes Detail
Approval
2008-10-29
A
First release.
2009-12-07
B
Change to new datasheet format, add OCP, OVP, OTP…etc.
XF Jiang
2010-01-12
C
Updated outline.
XF Jiang
2010-03-10
D
Updated thermal derating curves.
XF Jiang
2010-03-24
E
Add thermal derating curves under 18V input and 75V input.
XF Jiang
2010-11-16
F
Updated TD curve.
XF Jiang
Han
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. 111610
18
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
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
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