RCD-48 Datasheet, PDF (1/4 Pages) Recom International Power – Constant Current Buck LED Driver

Features
LED DRIVER
● 70W Buck LED Driver
● Constant Current Output (350 to 1200mA)
● Digital PWM and Analogue Voltage Dimming
● High Efficiency to 96%
● EN, UL and RAILWAYS Certified
● Metal or Plastic Case Version
● IP67 Rated for /W, Plastic Case Version
Description
The RCD-48 series is a step-down constant current source designed for driving high power LED applications.
Four output currents are available. The maximum output voltage is 56V. The buck drivers have digital PWM
and/or analogue voltage dimming control and are special featured with very high efficiency. Typical applications
are 48V bus lighting solutions or high voltage LED arrays (e.g. high bay lights).
Selection Guide
Part
Number
Input
Range
(VDC)
RCD-48-0.35* 9-60
Output
Current
(mA)
0-350
Output
Voltage
(VDC)
2-56
Dimming
Control
Digital + Analogue
Efficiency
Typ.
(%)
96
RCD-48-0.50* 9-60
0-500
2-56
Digital + Analogue
96
RCD-48-0.70* 9-60
0-700
2-56
Digital + Analogue
96
RCD-48-1.00* 9-60
0-1000
2-56
Digital + Analogue
96
RCD-48-1.20/M 9-60
0-1200
2-56
Digital + Analogue
96
*add suffix “/W“ for wired version with Vref output and analogue + PWM dimming control (seven wires)
Note: Add suffix “/M“ for metal case (RCD-48-1.20/M only). No metal case with wires available.
Standard version (no suffix) and wired version (suffix /W) only in plastic case.
Specifications (typical at 25°C, nominal input voltage, rated output current unless otherwise specified)
Operating Input Voltage Range
9-60VDC
Absolute Maximum Input Voltage
65VDC max.
Output LED String Voltage Range
2V min. / 56V max.
(depand on the input voltage, defined by the output impedance, see Safe Operating Area)
Input Filter
Capacitor
Output Current Accuracy
±3% typ. / ±5% max.
Internal Power Dissipation
350mA
0.8W typ.
(Vin=60V, Vout=56V)
500mA
1.0W typ.
700mA
1.1W typ.
1000mA
1.3W typ.
1200mA
1.4W typ.
Output Current Stability
Vin=60V, Vout=2-56V, Iout=350-1200mA
±1% max.
Output Ripple and Noise (20MHz BW) Vin=60V, Vout=2-56V, Iout=350-1200mA
300mVp-p max.
Maximum Capacitive Load
100μF max.
Switching Frequency
50kHz min. / 1000kHz max.
Efficiency at Full Load
96% typ.
PWM DIMMING CONTROL & REMOTE ON/OFF CONTROL
Input Voltage Range
5V typ. / 10V max.
Threshold Voltage
Device ON
0.5V max.
Device OFF
2.0V min.
PWM Frequency
For Linear Operation
200Hz max.
Frequency Limit
1000Hz max.
ANALOGUE DIMMING CONTROL (Leave open if not used - do not tie to +Vin)
Input Voltage Range
0V min. / 10V max.
Control Voltage Range
0V min. / 5.1V max.
Note: The analogue dimming range is from 0% to 100%, but the output can be unstable below 10%, when using the analo-
gue dimming function.
Analogue Pin Drive Current
Vc=5V
0.2mA max.
Vref Version
Vref Voltage
4.95V
Vref Output Current
0.5mA
Vref Output Short Circuit Current
2mA typ.
Ambient Temperature
350mA
-40°C to +80°C
(free air convection)
500mA
-40°C to +80°C
700mA
-40°C to +75°C
1000mA
-40°C to +60°C
1200mA
-40°C to +50°C
Analogue and PWM Dimming Control Note: Leave open if not used - do not tie to +Vin
continued on next page
L-12
REV: 0/2015
LIGHTLINE
DC/DC-Converter
with 5 year Warranty
Constant
Current
Buck LED
Driver
RoHS
2011/65/EU
6/6
E224736
EN-50121-3-2 Certified
EN-60950-1 Certified
UL-60950-1 Certified
RCD-48
Derating-Graph
(Ambient Temperature)
1200
1000
700
Natural Convection
500
350
300
50
60
75
80
-40 0 20 40 50 60 80 100
Ambient Temperature Range (°C)
Refer to Application Notes
www.recom-power.com