Tag Archives: SMPS

Basic Switching Voltage Regulator Tutorial

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James Lewis @ baldengineer.com discuss about switching regulator types and uses.

A switching voltage regulator is one of my favorite circuits. In school, they were the first circuits I built where I understood how transistors worked. In fact, they were the first circuit I saw an inductor being useful! Switching regulators are incredibly efficient when designed properly. Of course, this detail about design is important.

Basic Switching Voltage Regulator Tutorial – [Link]

LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath

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Linear Technology announces the LTC3106, a highly integrated, 1.6µA quiescent current 300mV start-up buck-boost DC/DC converter with PowerPath™ management, optimized for multisource, low power systems. The LTC3106 is ideal for powering low power wireless sensors from rechargeable or primary batteries supplemented by energy harvesting. The LTC3106 incorporates maximum power point control (MPPC) making it compatible with common high impedance power sources, including photovoltaic cells, thermoelectric generators (TEGs) and fuel cells.

LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath – [Link]

LTC3106 – 300mA Low Voltage Buck-Boost Converter

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The LTC3106 is a highly integrated, 1.6μA quiescent current 300mV startup buck-boost DC/DC converter with PowerPath management, optimized for multisource, low power systems. The LTC3106 is ideal for powering low power wireless sensors from rechargeable or primary batteries supplemented by energy harvesting. If the primary power source is unavailable, the LTC3106 seamlessly switches to the backup power source. The LTC3106 is compatible with either rechargeable or primary cell batteries and can trickle charge a backup battery whenever there is an energy surplus available.The LTC3106 provides 300mA steady state and 650mA peak load current at up to 92% efficiency.

LTC3106 – 300mA Low Voltage Buck-Boost Converter – [Link]

LTC3815 – 6A Monolithic Synchronous DC/DC Step-Down Converter

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Linear Technology Corporation announces the LTC3815, a high efficiency 6A monolithic synchronous step-down DC/DC converter with an I2C-based PMBus interface for digital power system management (PSM). The LTC3815’s simplified and intuitive PMBus “Lite” command set makes it simple to use. The digital interface provides programming and read back of voltage, current, temperature and faults; all supported by LTpowerPlay™ software. This interface allows the output voltage to be margined over a ±25% range with 0.1% resolution. The default output voltage is set with a single external resistor and will power up to this voltage with or without the serial interface.

LTC3815 – 6A Monolithic Synchronous DC/DC Step-Down Converter – [Link]

SparkFun: A look inside some common power supplies

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MTaylor @ sparkfun.com takes a look inside different power supplies he has on his box.

Power supplies are everywhere these days. With the advent of switching power supplies, the cost of high-current supplies has radically dropped. Maybe you’ve noticed how the large, heavy, wall-wart style adapters are no longer lurking around your baseboards, falling out of their sockets? Or occupying several of your valuable power-strip positions? But not all power supplies are created equal.

SparkFun: A look inside some common power supplies – [Link]

Switch Mode Power Supply (SMPS) Topologies (part I)

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Microchip’s application note describes the basics of different SMPS topologies:

The industry drive toward smaller, lighter and more efficient electronics has led to the development of the Switch Mode Power Supply (SMPS). There are several topologies commonly used to implement SMPS. This application note, which is the first of a two-part series, explains the basics of different SMPS topologies. Applications of different topologies and their pros and cons are also discussed in detail. This application note will guide the user to select an appropriate topology for a given application, while providing useful information regarding selection of electrical and electronic components for a given SMPS design.

Switch Mode Power Supply (SMPS) Topologies (part I) – [Link]

LT8331 – Low IQ Boost/SEPIC/ Flyback/Inverting Converter

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Linear Technology Corporation announces the LT8331, a current mode step-up DC/DC converter with an internal 500mA, 140V switch. It operates from an input voltage range of 4.5V to 100V, making it suitable for use with a wide range of input sources found in industrial, transportation and avionic applications. The LT8331 can be configured as either a boost, SEPIC, flyback or inverting converter. Its switching frequency is programmable from 100kHz to 500kHz, enabling designers to minimize external component sizes.  Burst Mode® operation reduces quiescent current to only 6µA while keeping output ripple below 20mVP-P. The combination of a high voltage MSOP-16E package and tiny externals ensures a very compact footprint while minimizing solution cost.

LT8331 – Low IQ Boost/SEPIC/ Flyback/Inverting Converter – [Link]

LT8714 – 80V/5A synchronous 4-quadrant DC/DC controller

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Linear Technology Corporation announces the LT8714, an 80V input synchronous PWM four quadrant output DC/DC controller. This device cleanly transitions the output voltage through zero volts with up to 5A sourcing and sinking current capability, regardless of the output voltage polarity, making it ideal for regulating to positive, negative, or zero volts. The bipolar output enables the LT8714 to source or sink current, regardless of the output voltage polarity. Applications include bidirectional current sources, test systems, high power low frequency signal amplification, back body biasing, thermoelectric coolers (TECs) and electronic window tinting

LT8714 – 80V/5A synchronous 4-quadrant DC/DC controller – [Link]

 

1.2V TO 35V DC-DC CONVERTER

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1.2V to 35V Adjustable DC-DC Converter project has been design around TI’s LM2576-ADJ IC. Inputs supply 40 VDC. LM2576-ADJ is a monolithic integrated circuit that provides all the active functions for step down switching regulator, capable of driving 3A load with excellent line and load regulation.this board has minimum number of components.

Features

  • Output 1.2 to 35 VDC @ 3 A regulated low ripple DC voltage
  • Onboard potentiometer for output voltage adjust
  • Onboard bridge rectifier for AC voltage input
  • LED indication at input
  • Screw Terminal connectors for input and output
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 70 mm x 63 mm

1.2V TO 35V DC-DC CONVERTER – [Link]

LT8331- Low IQ Boost/SEPIC/ Flyback/Inverting Converter

8331

The LT8331 is a current mode step-­up DC/DC converter with an internal 500mA, 140V switch. It operates from an input voltage range of 4.5V to 100V, making it suitable for use with a wide range of input sources found in industrial, transportation and avionic applications. The LT8331 can be configured as either a boost, SEPIC, flyback or inverting converter. Its switching frequency is programmable from 100kHz to 500kHz, enabling designers to minimize external component sizes. Burst Mode operation reduces quiescent current to only 6µA while keeping output ripple below 20mV. The combination of a high voltage MSOP­-16E package and tiny externals ensures a very compact footprint while minimizing solution cost.

LT8331 – Low IQ Boost/SEPIC/ Flyback/Inverting Converter – [Link]