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Introducing the NFM series of SMD 3-Terminal Low ESL Capacitors from Murata
The NFM series of 3-terminal low ESL capacitors from Murata are designed for use in circuits to suppress differential mode EMI noise on semiconductor power lines.

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Introducing the LT8316 600V Input Micropower Flyback Controller which does not require an Opto Isolator from Analog Devices

Analog Devices provides complete power solutions with a full line-up of power management products, they make power design much easier with the LTpowerCAD® and LTspice® simulation programs coupled with their industry-leading design support. One such innovative power product is the LT8316 a micropower, high voltage flyback controller which does not need an opto-isolator for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency.

At start-up, the LT8316 charges its INTVCC capacitor via a high voltage current source. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer minimizing standby power dissipation.

 

 

Typical Application Circuit Schematic

The LT8316 operates from a wide range of input supply voltages from 16V to 600V and can deliver up to 100W of power, it has low quiescent current of just 75uA. The device offers excellent performance and can achieve high efficiency of greater than 90% under certain load conditions.

LT8316 Performance Graph

The LT8316 is supplied in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing and have an operating temperature range of -40°C to +125°C.

Demonstration boards are available for the LT8316 in three common circuit configurations to help engineers speed up the design process:

The DC2793A demonstration circuit is a high VIN no-opto synchronous flyback converter. The demo board outputs 5V and maintains tight regulation with a load current from 70mA to 7A. It is optimized to operate over a wide 140V to 450V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range.

Click here to download manual for the DC2793A evaluation board

The DC2718A demonstration circuit is a non-isolated flyback converter featuring. The demo board outputs 12V and maintains tight regulation with a load current from 30mA to 3A. It is optimized to operate over a wide 100V to 600V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range.

Click here to download manual for the DC2718A evaluation board

The DC2781A demonstration circuit is a nonisolated buck converter. The demo board outputs 12V and maintains tight regulation with a load current from 10mA to 0.2A. It is optimized to operate over a wide 19V to 600V DC input voltage range. Output voltage accuracy stays within ±1% over the entire input voltage and load range

Click here to download manual for the DC2781A evaluation board

The LT8316 is suited to a wide range of isolated power supply designs such as those used in Communications, Automotive, Industrial, Medical, Off-Line Housekeeping Power Supplies, Electric Vehicles, Battery Stacks and Multioutput Inverter Gate Drives.

Key Features

 

  • Wide Input Voltage Range: 16V to 600V
  • No Opto-Isolator Required for Regulation
  • Quasi-Resonant Boundary Mode Operation
  • Constant-Current and Constant-Voltage Regulation
  • Low-Ripple Light Load Burst Mode® Operation
  • Low Quiescent Current: 75μA
  • Programmable Current Limit and Soft-Start
  • 20 pin TSSOP Package with High-Voltage Spacing
  • Operating temperature range -40°C to +125°C

 

Click here for more information or to buy from Anglia Live.

Anglia are offering customers a FREE demo board and samples of the LT8316 600V Input Micropower Flyback Controller from Analog Devices, please fill in the form below to register for your FREE samples now.

 

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To register for a FREE demo board and samples of the LT8316 600V Input Micropower Flyback Controller from Analog Devices, please fill in the form below.

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Interested in more FREE samples for your design? Click here to try our Ezysample service.

FREE samples for UK and Ireland customers only, subject to availability.

For more information, or details on the full range of Analog Devices products available from Anglia, please email info@anglia.com

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This news article was originally published in September 2019.

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19/10/17