What is a multiphase buck converter?

Switched mode DC-DC converters, including switching regulators, switching controllers, and PMICs that have multiple outputs, provide additional benefits if they offer multiphase functionality. A multiphase converter consists of paralleled power trains which drive a common load.

What is multiphase voltage regulator?

A multiphase buck regulator is a parallel set of buck power stages as shown in Figure 2-1 and Figure 2-2, each with its own inductor and set of power MOSFETs. Collectively, these components are called a phase. These phases are connected in parallel and share both input and output capacitors.

What is a multiphase controller?

Digital multiphase controllers They are PMBus™-programmable and feature embedded non-volatile memory (NVM) for storing configuration data. The PMBus communication interface also allows reporting of voltage, current, power, temperature, and fault status.

How do you increase the efficiency of a buck converter?

A synchronous buck converter sacrifices cost for increased efficiency by replacing the freewheeling diode with a low-side FET. (
These represent ideal waveforms during HS FET turn-on. (
The common source inductance (LCSI) includes both internal and external inductances.

What is multiphase testing?

Multiphase Surface well testing involves the use of multiphase flow meter to measure instantaneous flow rate of fluids. This could reduce flow periods and fasten the decision processes, create confidences in the information acquired and the reliability of the results.

What is multiphase power supply?

Multiphase power supplies are used to implement power inverters, power factor correction circuitry, DC to DC power supplies, and isolated switching power supplies. Large per-phase currents with high frequency switching speeds, and low noise are among the power supply technology design techniques offered by OTEC.

What is switch regulator?

A switching regulator (DC-DC converter) is a regulator (stabilized power supply). In an electronic or other device, a switching regulator takes the role of converting the voltage from a battery or other power source to the voltages required by subsequent systems.

How do you calculate the efficiency of a buck regulator?

A power converter’s efficiency (AC-DC or DC-DC) is determined by comparing its input power to its output power. More precisely, the efficiency of the converter is calculated by dividing the output power (Pout) by its input power (Pin).

What is the efficiency of a buck converter?

The efficiency of buck converters can be very high, often over 90%, making them useful for tasks such as converting a computer’s main supply voltage, which is usually 12 V, down to lower voltages needed by USB, DRAM and the CPU, which are usually 5, 3.3 or 1.8 V.

What is multiphase flow measurement?

Multiphase flow measurement (MPFM) is accomplished by using a system of devices that reports the volume or mass of oil, water and gas, generally at some standard process condition of temperature and pressure. This device is called a multiphase flow meter which is sometimes given the acronym “MPFM”.

What is multiphase flow meter device?

A multiphase flow meter is a device used to measure the individual phase flow rates of constituent phases in a given flow (for example in oil and gas industry) where oil, water and gas mixtures are initially co-mingled together during the oil production processes.

How are multiphase buck converters used in RF power supplies?

Envelope tracking as used in the RF power supply design with a multiphase buck converter ensures high peak to average power ratio (PARP). Implementation of ZVS helps reduce switching losses, bringing the efficiency of these supplies above 95%. To see how a multiphase buck converter works, let’s look at an example with a 2-phase regulator.

What are the benefits of using a multiphase regulator?

In addition, multiphase regulators can respond to output load changes faster so they provide better transient response. Most of these benefits become more evident for circuits designed for high current output, for example above 10 amps.

What was the power stage of the multiphase converter?

Before the hardware tests were done, OrCad PSpice was used for an open loop simulation of the power stage. The power stage consisted purely of the four phase multiphase buck converter. Simulation was done for the regular converter as well as the revised buck converter. The hardware tests were then done for the EVM board and the revised board.

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