Tag Archives: regulator

PWM POWER REGULATOR

In order to synthesize chlorates and perchlorates in the home lab it is always good to have a way to regulate the current flowing through the electrolyte. Because the load is purely resistive the simplest solution is a small PWM (Pulse Width Modulation) regulator. So I decided to make my own.

PWM Power Regulator – [Link]

1.2V to 35V – 1A Adjustable Regulator Board

The board built around LM2575-ADJ from Texas instruments. A 1.0 A output current capability power supply that features an adjustable output voltage, This regulator board delivers 1.0 A into 1.2 V to 35 V output. The input voltage ranges from roughly 8.0 V to 40 V. In order to achieve a 10 or more times reduction of output ripple.

Features

  • Output 1.2 to 35 VDC @ 1 A
  • Input Supply 8 To 40V ( 1.2V To 35V Required 40V Input)
  • Onboard Trimpot for output voltage adjust
  • On Board Power LED
  • Header Connector For Input & Output

1.2V to 35V – 1A Adjustable Regulator Board – [Link]

Buck regulators accept up to 40-V input

by Susan Nordyk @ edn.com:

A wide input range of 4.5 V to 40 V enables the TS3004x series of DC/DC synchronous buck regulators from Semtech to work in a wide range of applications, including industrial, telecommunication, and consumer. The current-mode TS30041 and TS30042 furnish 1 mA and 2 mA of continuous output current, respectively, and include integrated power switches and robust fault protection in a small 3×3-mm, 16-lead QFN package.

Buck regulators accept up to 40-V input – [Link]

Semtech TS30041 – Buck regulators accept up to 40-V input

ts3004x-bd

A wide input range of 4.5 V to 40 V enables the TS3004x series of DC/DC synchronous buck regulators from Semtech to work in a wide range of applications, including industrial, telecommunication, and consumer. The current-mode TS30041 and TS30042 furnish 1 mA and 2 mA of continuous output current, respectively, and include integrated power switches and robust fault protection in a small 3×3-mm, 16-lead QFN package. by @ edn.com

Semtech TS3004x – Buck regulators accept up to 40-V input – [Link]

LTM4643 – Ultrathin Quad μModule Regulator with Configurable 3A Output Array

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Configurable as quad, triple, dual or single output, the LTM4643 quad output step-down µModule [micromodule] (power module) regulator deliver, respectively, 12A, 6A & 6A or 9A & 3A, or 4 x 3A from a 9 x 15 x 1.82 mm ultrathin LGA package. by Graham Prophet @ edn.com:

This flexibility enables system designers to rely on one simple and compact µModule regulator for a variety of voltage and load current requirements in FPGA, GPU, ASIC and processor-based applications. The 1.82 mm height ultrathin package allows the LTM4643 to be mounted on the backside of the PCB, freeing space on the topside. The LTM4643 is suitable for systems with height restrictions, such as backside PCB assembly in PCIe applications and where the regulator must fit under a common heat sink or cold plate to cool high power FPGAs, GPUs, ASICs and processors in applications such as embedded computing, data storage, medical imaging and industrial systems

LTM4643 – Ultrathin Quad μModule Regulator with Configurable 3A Output Array – [Link]

Regulator offers independent outputs

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Susan Nordyk @ edn.com writes:

Housed in a 15×9×2.42-mm over-molded BGA package, the LTM8049 µModule dual-output DC/DC converter from Linear Technology is configurable for a combination of SEPIC and/or inverting operation by simply grounding the appropriate output rail. All that is needed to complete the design are input and output capacitors and a few resistors—a total of 7 components compared to approximately 30 components for a comparable discrete design.

Regulator offers independent outputs – [Link]

Dual input, 2.5A step-down DC/DC achieves 95% efficiency

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by Graham Prophet @ edn.com:

LTC3126 is a 2.5A, 2.4V to 42V input, synchronous step-down switching regulator with integrated dual input PowerPath control. Its power stage topology enables operation from either of two independent power sources, with seamless, internally controlled transitions between inputs to ensure a stable output voltage during hot-plug and power source disconnect events.

Dual input, 2.5A step-down DC/DC achieves 95% efficiency – [Link]

LTC3623 – Switching regulator doubles as Class-D audio amplifier

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Clemens Valens @ elektormagazine.com discuss about LTC3623 switching regulator which can be used as Class-D Audio Amplifier.

Sure thing, Elektor has published several designs of adjustable power supplies based on switching regulators, so we know that doing this properly in a reproducible way and without making things overly complex requires some serious head scratching. The anxiety may be reduced vastly though by a new adjustable synchronous buck regulator which uses a single resistor to set its output voltage anywhere between 0 and 14.5 volts. Using the device is very simple; you can even use it as an audio amplifier.

LTC3623 – Switching regulator doubles as Class-D audio amplifier – [Link]

Reverse engineering a server CPU voltage regulator module

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Andy Brown wrote a detailed article on reverse engineering a CPU voltage regulator:

A recent ebay fishing expedition yielded an interesting little part for the very reasonable sum of about five pounds. It’s a voltage regulator module from a Dell PowerEdge 6650 Xeon server.
I originally bought this because I had the idea of salvaging parts from it to use in another project. These are high quality modules that will have very good inductors and sometimes an array of high value ceramic capacitors that could be re-used (ceramics of at least 22µF at 16V and above are rather pricey at the moment). So the VRM arrived and I was rather impressed with the build quality and decided to have a go at reverse engineering it.

Reverse engineering a server CPU voltage regulator module – [Link]

LT3086 – 40V, 2.1A Low Dropout Adjustable Linear Regulator with Monitoring and Cable Drop Compensation

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Graham Prophet  @ www.edn-europe.com discuss about LT3086 LDO.

The 40V, 2.1A low dropout linear regulator (LDO) includes current monitoring with externally settable current limit and temperature monitoring with external control of thermal limit temperature. The device includes a programmable power-good status flag, cable drop compensation and easy paralleling. The current reference in the LT308x LDO family provides regulation, independent of output voltage.