Switching Regulators

  Enquiry / contact me

To supply microprocessors from 4-20mA loop

Electronics & Electricity

Switching Regulators
Switching Regulators

RECOM new R420-1.8/PL switching regulators were developed specifically for supplying microprocessors from 4-20mA loop. Characteristics of the flat module include extremely low idle power along with high efficiency.

As aged as it may be, the venerable analogue 4–20mA loop still represents the undisputed standard in process and control technology – not least due to the relatively simple two-wire technology, which is extremely reliable and easy to install. Supplying digital components from the unused portion of the loop current had become an issue with microprocessors processing raw data and HART (Highway Addressable Remote Transducer) modems ensuring that smart sensors keep sending a variety of data signals on the same loop.

Conventional switching regulator ICs are unsuitable as their high efficiency at full load drops so far at lower loads that they exceed the 4mA threshold. Low quiescent current in sleep mode cannot compensate as this shuts off the main output voltage altogether. Linear regulators are not ideal either; despite their perfectly decent quiescent current levels at around 0.5mA, poor efficiency decreases available power by a factor of around three compared to switching regulators.

RECOM newly developed R420-1.8/PL switching regulators come with a particularly clever solution and a novel topology capable of lowering idle current to around 100μA while still maintaining rated voltage at output. For example,  24VDC and <3.5mA at the input provides 3.3V and 10mA at the output, which is capable of supplying the sensor alongside the microcontroller and HART modem without affecting loop functionality or metering accuracy. 

Another benefit is that these new switching regulators are programmable for any output voltage between 1.8V and 5V by simple wiring using a resistor, yielding a single component suitable for a variety of tasks in process automation or sensor-controlled, solar-powered systems. The new R420-1.8/PL features an open-frame SMD design, operates at temperature range from -40°C to +105°C, and operates at an altitude of up to 5,000m. The regulator is permanently protected against short-circuit, and comes with a three-year warranty.

Posted on May 12, 2017 - (2304 views)
RECOM Power GmbH
Münzfeld 35
4810 Gmunden - Austria
+43 7612 88 325 723
View full company profile
Location
More products from this supplier
Related articles
Dive into the World of Allied Motion in The Netherlands
Ultra-rugged Computer-on-module for the Transportation Sector
Reinforced isolated DC/DC converters THR Series
Cobot MELFA ASSISTA. Human Touch. Industrial Performance
150W and 300W Open Frame Free Air Convection Cooled Power Supplies
20 V, 8 A, High Efficiency, Tiny Package Step-Down µModule Device
Powerful System-On-Module With Expanded Feature Set
Multiple Output Cascaded Buck Converter Steps
E-paper Displays & HMI Solutions with Displays: Development Partner with Innovative Strength
Kontron Completes its KBox B-202-CFL Industrial PC with Two New Variants
Ultra-rugged Computer-on-module for the Transportation Sector
150W and 300W Open Frame Free Air Convection Cooled Power Supplies
Powerful System-On-Module With Expanded Feature Set
Kontron Completes its KBox B-202-CFL Industrial PC with Two New Variants
Non-contact Switch for Hygienic Switching
10 Gbps Full Bandwidth Digital Isolator
Global Survey Conducted by Molex Highlights Continued Progress in Industry 4.0
Thin Air: How Power Entry Modules can Withstand Heights
Non-Contact Voltage Clamp Meter Ensuring Secure Electrical Measurements
1-phase High Current Choke
Ultra-rugged Computer-on-module for the Transportation Sector
High Reliability Output Modules Ideal for Industrial Applications
New Current Sensor Element and Firmware Upgrade for Award-winning Yokogawa Precision Power Analyzer 
Standard Self-Latching Multipole Connectors with Alignment Key
HMS Networks Releases the World’s First Industrial 5G Router and Starterkit
LEMO Marks its 75th Anniversary in 2021
Thermal Protection
1 to 3 Watts "Low-cost" DC-DC Converters
Subaru Selects Xilinx to Power New-generation EyeSight System
Ultra-low Power Radio Module