BEL 0RCY

ISOLATED DC/DC CONVERTERS
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 2010
0RCY-C2TV2x
RoHS Compliant
Rev.C
Features
•
Isolated
•
Input Under/Over Voltage Lockout
•
High Efficiency
•
Output Voltage Trim
•
Fixed Frequency (300 KHz)
•
Basic Insulation
•
High Power Density
•
OCP/SCP
•
Low Cost
•
Over Temperature Protection
•
Remote On/Off
•
•
Positive/Negative Remote Sense
Output Over-Voltage Protection
with Auto-recovery
•
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-C2TV2x is isolated dc/dc converter that operates from a nominal 48 Vdc source. This unit will provide
up to 60 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 standard eighth brick package.
Part Selection
Output
Voltage
1.2 Vdc
Input Voltage
48 Vdc
Max. Output
Current
50 A
Max. Output
Power
60 W
Typical
Efficiency
86%
Model Number
Active High
0RCY-C2TV20
Model Number
Active Low
0RCY-C2TV2L
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
0 R CY – C2 T V2 x
1 2
3
4
5
6
7
1---Through hole mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name
4---Series code
5--- Input range (36-75V)
6---Output voltage (1.2V)
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
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 2010
Absolute Maximum Ratings
Min
Typ
Max
Unit
-0.3
-
80
V
-
-
100
V
Remote On/Off
-0.3
-
18
V
I/O Isolation Voltage
Parameter
Input Voltage (continuous)
Input Voltage (transient)
Notes
100mS maximum
1500
-
-
V
Ambient Temperature
-40
-
85
°C
Storage Temperature
-55
-
125
°C
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may
permanently damage the device.
Input Specifications
Parameter
Input Voltage
Min
36
Typ
48
Max
75
Unit
V
Input Voltage Transient Rate
-
-
7
V/mS
Input Current (full load)
-
-
3.0
A
Input Current (no load)
-
-
60
mA
Remote Off Input Current
-
10
15
mA
Input Reflected Ripple Current
(rms)
-
5
10
mA
Input Reflected Ripple Current
(pk-pk)
-
-
30
mA
I t Inrush Current Transient
-
-
0.1
As
Turn-on Voltage Threshold
33
-
35.5
V
Turn-off Voltage Threshold
32
-
34.5
V
2
Notes
With simulated source impedance of
10 uH, 5Hz to 20MHz. Use a 100
uF/100 V electrolytic cap with ESR=1
ohm max, at 200 [email protected]°C.
2
CAUTION: This converter is not internally fused. An input line fuse must be used in application.
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Unit
1.176
1.20
1.224
V
Load Regulation
-
±3
±6
mV
Line Regulation
-
±3
±5
mV
Regulation Over Temperature
(-40deg.C-85deg.C)
-
±4
±9
mV
Total Regulation
-
±10
±19
mV
Ripple and Noise (rms)
-
-
10
mV
Ripple and Noise (pk-pk)
-
-
50
mV
Output Current Range
0
-
50
A
Output Voltage Set Point
Notes
Vin=48 V, Io=50%load
Vin=75 V, 0-20MHz BW, with a 1µF
ceramic capacitor and a 100 µF
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
2
ISOLATED DC/DC CONVERTERS
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 2010
Output Specifications (continued)
Parameter
Min
Typ
Max
Unit
52
-
62
A
Short Circuit Surge Transient
-
2
4
As
Turn on Time
-
-
40
mS
Overshoot at Turn on
-
0
-
%
Output Capacitance
0
-
20,000
uF
Output DC Current Limit
Notes
2
Transient Response
25% ~ 50%
Max Load
50% ~ 25%
Max Load
Overshoot
Settling Time
Overshoot
Vo=
1.2V
Settling Time
-
-
50
mV
-
-
250
uS
-
-
50
mV
-
-
250
uS
di/dt=0.1A/us, Vin=48Vdc, with a
1µF ceramic capacitor and a 330 µF
ESR≤50mOhm cap at output.
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter
Min
Typ
Max
Unit
Efficiency (full load)
84
86
-
%
Efficiency (half load)
85
89
-
%
Switching Frequency
270
300
330
kHz
Isolation capacitance
-
2200
-
pF
90
-
110
%
Remote Sense Compensation
-
-
10
%
Over Temperature Protection
-
125
-
°C
1.39
-
1.6
V
-
28
-
g
Over Voltage Trim Range
Over Voltage Protection
Weight
FIT
TBD
-
2.30 x 0.90 x 0.40
58.42 x 22.78 x 10.26
-
Notes
Measured at Vin=48 V
The total voltage increased by trim and
remote sense should not exceed
10%Vo.
Calculated Per Bell Core SR-332
(Vin=48V, Io=80%load, Ta = 25 °C,
9
FIT=10 /MTBF)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
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
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 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
Min
-0.7
Typ
-
Max
0.8
Unit
V
2.4
-
18
V
-0.7
-
0.8
V
2.4
-
18
V
0
-
1
mA
Current Sink
Notes
The remote on/off pin open, Unit off.
The remote on/off pin open, Unit on.
Efficiency
Efficiency Data
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
74%
72%
70%
5.00
36 V
48 V
75 V
12.50
25.00
37.50
50.00
Output Current (A)
Thermal Derating Curve
Vin=48V, with maximum junction temperature of semiconductors derated to 120C
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
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 2010
Ripple and Noise Waveform
75Vdc input, 1.2Vdc/50A output
Note: Ripple and noise at full load, with a 1uF ceramic cap and a 100uF Tantalum cap at output, and Ta=25 deg
C.
Transient Response Waveforms
Vout=1.2V, 50% to 75% Load Transients
Vout=1.2V, 75% to 50% Load Transients
Note: Transient response at di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor and 330µF ESR
≤50mOhm 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
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 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(+) pin. Only one of the resistors should be used for any given application.
Rtrimdown =
Vout
511
− 10.22[kΩ]
delta
Module
(100 + delta ) ⋅ Vo ⋅ 5.11 511
−
− 10.22 [k Ω ]
0.6125 ⋅ delta
delta
Vout
Module
Connecting an external resistor between the TRIM pin and the Sense (+)
pin increases the output voltage set point.
Note:
delta =
Rtrimdown
GND
Connecting an external resistor between the TRIM pin and the Sense (-)
pin decreases the output voltage set point.
Rtrimup =
Trim
Rtrimup
Trim
GND
(Vo _ req − Vo ) × 100 [% ]
Vo
Vo_req=Desired (trimmed) output voltage [V]
Output voltage Vo=1.2 V
400
5000
360
4500
Trim resistor value,Rtrim_up(KOhm)
Trim resistor value Rtrim_down(KOhm)
Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense pins and the output terminals must not exceed the
output voltage sense range: ≤ 10% x Vout. If not using the remote-sense feature to regulate the output
voltage at the point of load, connect SENSE (+) to Vout and SENSE (-) to GND at the module. The tracks,
that connect the sense pins to the load, must have a resistance << than 10 ohm (for example maximum
100 mOhm).
320
280
240
200
160
120
80
40
0
0.96
4000
3500
3000
2500
2000
1500
1000
500
0.98
1.01
1.03 1.06 1.08
1.1 1.13
Adjusted output voltage Vo,adj (V)
1.15
1.18
1.2
0
1.2
1.21
1.22
1.24 1.25 1.26 1.27 1.28
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
1.3
1.31
6
1.32
ISOLATED DC/DC CONVERTERS
48 Vdc Input
1.2 Vdc /50 A Output
Aug. 10, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mechanical Outline
Pin Connections
Pin
Name
Pin Dia
1
2
3
4
5
6
7
8
Vin+
RC
VinVoutSenseTrim
Sense+
Vout+
0.040’’
0.040’’
0.040’’
0.062’’
0.040’’
0.040’’
0.040’’
0.062’’
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
7
ISOLATED DC/DC CONVERTERS
48 Vdc Input
1.2 Vdc /50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 10, 2010
Revision History
Date
Revision
2008-04-21
PA
2008-11-25
2010-08-10
Changes Detail
Approval
First release
HF Fan
B
Update load regulation, output noise, OCP, turn on time, transient,
TD, NR, TR, MD and trim down
HF Fan
C
update TR, cover, TD, MD and No load input current
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. 081010
8
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