Abstract
It is common for Internet of Things (IoT) devices, industrial sensors, meters, precision, and medical equipment to require both a positive and negative voltage. Often, these voltages must be symmetrical and sourced from a single power supply. This article explains the market trends, technical requirements, and a comparative analysis of solutions, aiming to equip the sales team with the insights needed to effectively promote the products.
Definition of Terms
Converter: Power management integrated circuit with or without integrated switches inside an IC
Regulator: A converter with integrated switches
Controller: A converter with external switches
The Market
Various electronic designs require one or more negative voltages in the power supply, often coming together with a symmetrical positive voltage. Some typical application examples are:
- In gate drives for the charger and traction inverter of electric vehicles (to drive gallium nitride (GaN) FETs and isolated-gate bipolar transistors (IGBTs) for example).
- In high performance ADC and DAC and rail-to-rail operational amplifiers (op
amps) for industrial and medical applications. - In LCD displays for consumer products.
- In driving (avalanche) photodiodes.
- In medical applications like X-rays.
The following details two typical block diagrams of such designs.
Read the full article here
