Datasheet

ManualsBrandsRecom ManualsBoard Mounted DC / DC ConvertersDC/DC Converter 6 ... 60VDC 52V

Constant

Current

Buck

LED Driver

RCDE-48

DC/DC Converter

www.recom-power.com

REV.: 0/2019 L-1

Description

The RCD-48 series is a step-down constant current source designed for driving high power LED

applications from 12V, 24V or 48V nominal input voltages. 350, 700 or 1050mA output currents are

available as standard. The input voltage range is from 6V up to 60VDC with UVLO. These high efﬁciency

buck drivers have digital PWM and/or analogue voltage dimming control which is capable of being

controlled by 3.3V logic. The dimming input can also be used as an CTRL pin. Typical application is a

48V powered lighting solution for up to 15 high brightness LEDs in series.

Features

dimmable

LED

Driver

• Low cost buck LED driver

• 6-60V input

• Constant current output (350, 700 or 1050mA)

• Digital PWM and analogue voltage dimming

• High efﬁciency up to 97%

• no internal E-Caps

• RoHS2 conform

Selection Guide

Part Input Output Output Efﬁciency Dimming

Number Voltage Range Voltage Range Current typ.

(1)

Control

[VDC] [VDC] [mA] [%]

RCDE-48-0.35 6-60 3-52 0-350 97 Analogue and PWM

RCDE-48-0.70 6-60 3-52 0-700 97 Analogue and PWM

RCDE-48-1.05 6-60 3-52 0-1050 97 Analogue and PWM

Model Numbering

Output Currentnom. Input Voltage

RCDE-48-

All LED Drivers may not be used without a load. They must be switched on the primary side only.

Noncompliance may damage the LED or reduce its lifetime.

Ordering Examples

RCDE-48-0.70 6-60 Vin 3-52Vout 0-700mA Analogue and PWM Dimming

Notes:

Note1: Efﬁciency is tested at nominal input and 15 LEDs (15 x V

3VDC = 45VDC) at +25°C ambient

Summary of content (7 pages)

PAGE 1
• • • • • • • Features dimmable LED Driver Low cost buck LED driver 6-60V input Constant current output (350, 700 or 1050mA) Digital PWM and analogue voltage dimming High efficiency up to 97% no internal E-Caps RoHS2 conform Description The RCD-48 series is a step-down constant current source designed for driving high power LED applications from 12V, 24V or 48V nominal input voltages. 350, 700 or 1050mA output currents are available as standard. The input voltage range is from 6V up to 60VDC with UVLO.
PAGE 2
RCDE-48 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin and 15 LEDs (15*3V=45V) unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. nom Vin= 48VDC 6VDC 48VDC 60VDC 5.6VDC 5.3VDC Internal Input Filter capacitor Input Voltage Range Under Voltage Lockout (UVLO) nom. Vin= 48VDC DC-DC ON DC-DC OFF Standby Current nom.
PAGE 3
RCDE-48 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin and 15 LEDs (15*3V=45V) unless otherwise stated) RCDE-48-1.05 Efficiency vs. Load Dropout Voltage vs. Load 3.0 100 2.5 Dropout Voltage [VDC] 90 Efficiency [%] 80 70 60 50 40 2.0 1.5 1.0 0.
PAGE 4
RCDE-48 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin and 15 LEDs (15*3V=45V) unless otherwise stated) Deviation vs. Load RCDE-48-1.05 7 5.25 5.25 3.5 3.5 Deviation [%] Deviation [%] RCDE-48-0.70 7 1.75 0 -1.75 1.75 0 -1.75 -3.5 -3.5 -5.25 -5.
PAGE 5
RCDE-48 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin and 15 LEDs (15*3V=45V) unless otherwise stated) PWM DIMMING AND ON/OFF CTRL (leave open if not used - do not tie to +Vin) Parameter Condition Value low line, DC-DC OFF high line, DC-DC ON Input Voltage Limits Dimming Voltage Range 0VDC to 0.3VDC 3VDC to 12VDC 0% to 100% Pin Drive Current ON/OFF CTRL 0% - 100%, duty cycle Vc= 5VDC 1mA max. for linear operation frequency limit PWM Frequency 200Hz - 1kHz 10kHz max.
PAGE 6
RCDE-48 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin and 15 LEDs (15*3V=45V) unless otherwise stated) Derating Graph (@ Chamber and natural convection 0.1m/s) RCDE-48-0.70 400 800 350 700 300 600 Output Current [mA] Output Current [mA] RCDE-48-0.35 250 200 150 100 500 400 300 200 50 100 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature [°C] Ambient Temperature [°C] RCDE-48-1.
PAGE 7
RCDE-48 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin and 15 LEDs (15*3V=45V) unless otherwise stated) DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value non-conductive black plastic, (UL94 V-0) silicone, (UL94 V-0) FR4, (UL94 V-0) case, baseplate potting PCB Material Dimension (LxWxH) 32.1 x 20.6 x 12.3mm Weight 16.0g typ. Dimension Drawing (mm) 32.1 20.6 10.5 8.0 tc Pin Connections 20.0 12.3 31.5 3.86 0.60+0.10/-0.05 2.