WHO USE DC-DC CONVERTER?

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2 WHO USE DC-DC CONVERTER?

3 CONTENTS What is DC-DC converter Different types of DC-DC converters Why do designs need DC-DC converters How to select the right converter Who use DC-DC converter

4 What is DC-DC converter? A device that accepts DC input voltage, and produces DC output voltage May also provide Wide input voltage range Different output voltage Voltage regulation Galvanic isolation for safety isolation, noise isolation, or to eliminate ground loop effect

5 Different types of DC-DC converters Input voltage: accept fixed range +/-5%, +/-10%, or wide range 2:1 (e.g. 9-18V) 4:1 (e.g. 9-36V) 8:1 (e.g. 4-32V) Output voltage: regulated / unregulated, single, dual or triple standard voltages 3.3 / 5 / 9 / 12 / 15 / 24 / 48VDC Isolation: none, 1KV / 3KV / 6KV Package: SIP / DIP / SMT / Chassis mount/ DIN rail Output power: usually rated from ¼ watt, up to 100 Watt

6 Why do designs need DC-DC converters (1) Ready to use / Plug & Play / reduction in design complexity and time Isolation, protections, more features and flexibility Wide variety of output choice with same package Proven and reliable, lower overall system cost, lower development cost Power saving, EMI / heat / safety compliance Customer want a proven solution OR starting from the design of circuit?

7 Why do designs need DC-DC converters (2) Good power source is getting more critical than ever Becoming a basic requirement in many applications Power Related Issue Voltage Conversion DC-DC Converter Help to... Step up/ Step down voltage AC/DC Conversion Polarity Conversion Multi-Voltage Output Affecting system performance, reliability, safety, and product liability Isolation Noise Isolation Safety Isolation Ground Isolation Power consumption is a major concern Growing concern on green technology Size of device is getting smaller Protection Protect Short Circuit Protect Overload Protect Overheat

8 Why do designs need DC-DC converters (3) Linear regulators are simple, but inefficient, a lot of energy is wasted as heat, thus needing radiators Linear regulator can only do step down DC-DC converters accept wide input range, and feature high efficiency, isolation, feedback circuit, multi-output You need DC-DC converters if there s big difference between input and output, or you want functions such as ripple & noise isolation, overload, over heat, short circuit protections, or simply to increase battery running time Come up with competition of linear regulators LM78xxxx?

9 How to select the right DC-DC converter You can select either from PAIRUI catalogue, selection guide, website, or contact us directly. If it is crossing to competition, all we need is the datasheet to cross, or you can decide the following spec: Do you need isolation between input & output? Rated output power needed in total? What is your input source, or the input voltage range? Output voltage to be regulated or unregulated? Numbers of output single, dual, triple? Package style to be SIP / DIP / SMD / Chassis mount / DIN rail? Need any other functions such as remote ON/OFF control, continuous short circuit protection, etc.?

10 Where to use DC-DC converter (1) Distributed power source for Sensors Amplifiers ADC, DAC Processor Interface (CAN, RS232 / 485) POL To achieve Isolation Ripple and noise reduction Voltage conversion Single to dual conversion

11 Application references Instrumentation Automation device HVAC Controller Railway Navigation Access Control Comm. Link for Display Industrial Communication Medical Device Metering

12 Smart grid & energy meters Where to use DC-DC converter (2) Substation terminal, large client terminal, for data collection in central office, potential use of AC-DC converter Communication interface, either wired or wireless, RS232, RS485, CAN bus, Ethernet, WiFi, Zigbee, are potential app. of 5V to 5V 1~3KV isolation converters Backup battery charging, supply are potential app. of none isolation switching regulators

13 Access control system Where to use DC-DC converter (3) (3) Communication interface, either wired or wireless, RS232, RS485, CAN bus, Ethernet, WiFi, are potential app. of 5V to 5V, 1~3KV isolation converters Main power source is a potential app. of AC-DC converters, to replace adaptors / power board

14 Sensor & data logger Where to use DC-DC converter (4) Communication interface, either wired or wireless, RS232, RS485, CAN bus, Ethernet, WiFi, are potential app of 5V to 5V, 1~3KV isolation converters

15 A variety of devices that use DC-DC converter PLC RTU IPC

16 A variety of devices that use DC-DC converter Transducer Meter Energy

17 A variety of devices that use DC-DC converter Railway Mining Car

18 Thank you!