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How to Select DC to AC Converter Chips

Image Credits: JKL Components Corp., Unipower Corp

DC to AC converter chips transfer DC inputs into AC power. They are computer chips with a specific integrated circuit (IC) package type.

How DC AC Converter Chips Work

DC AC converter chips create a square-form wave of output through an oscillator circuit. The square wave is then smoothed into a more normal AC sine wave using filters, inductors, and capacitors. An overview of converters appears in this video.

Video Credit: ES Repair

A more detailed explanation is shown in this video.

Video Credit: Indian Institute of Science

Types of AC DC Conversion Chips

Low end inverter chips produce square wave AC power.

More expensive converters filter the output more, producing a triangle wave (saw tooth wave), a stepped wave (or other modified sine wave), or a sine wave. Pure sine wave inverters can create smoother power than that supplied to residences.

Specifications

Important specifications when selecting DC AC converter chips include,

DC input voltage is usually 12 or 24 VDC.
AC output frequencies (e.g., 5.12E-5 to 0.63 Mhz), voltage (e.g., 184 to 650 volts) range or can be adjustable.
Apparent power (VA rating) varies (e.g., 180 to 8,500 VA).
AC output can be single-phase (low voltage applications) or three-phase (higher voltage applications).
Inverters operate in certain temperature ranges (e.g., -40 to 50 C).

Features

DC AC converter chips feature several main mechanical characteristics such as

One or more outputs are available.
Integral heat sinks, fans, and/or water provide cooling.
Devices that can be replaced without shutting down the system are hot swappable.
Over current, over voltage, or short circuit conditions can be warded against via protection.
Power factor correction optimizes power output.
A remote on/off switch is available.

Applications

Radio frequency, medical, telecommunications, magnetic, military, plasma devices use DC AC converter chips. They are also found in computers, instrumentation, and lasers.