Introduction This application note describes three PWM design variants using GreenPAK IC: 1. “0–100% PWM” is PWM signal generator with the possibility to control the signal’s duty cycle from 0 to 100% full range, controlled by external or internal signal (for instance: signal from external pin, I2C signal, from a comparator…

Introduction Some applications require oscillators not already served by the on-chip oscillators inside a GreenPAK IC. This application note describes two designs wherein a few passive external components can be used as an oscillator, which is connected to a GreenPAK. The first design is a low-power RC oscillator. The second is…

Introduction In this application note, a pair of Renesas GreenPAK™ SLG46537’s is used to create the electronic components for a simple basketball arcade machine. These machines tally baskets scored within a certain amount of time. They can often be found in arcades like Chuck E. Cheese’s or Dave & Buster’s. Basketball…

Introduction Analog 4–20 mA current loops are one of the most used communication buses in industrial environments, where environmental variables, process sensing, and control is required. This bus type is named after its maximum and minimum current values across the line; 4 mA and 20 mA. Current loops are used not…

Introduction This application note describes the HV PAK configuration for LED control. Since LEDs have high efficiency and brightness, this makes them leaders in many lighting applications. In this case, the SLG47105 is configured as the LED driver with four buttons to control LED brightness and color temperature. …

Introduction Brushless DC electric motors (BLDC), also known as electronically commutated motors (ECMs, EC motors) or synchronous DC motors, are synchronous motors powered by DC electricity via an inverter or switching power supply, which produces an AC electric current to drive each phase of the motor via a closed loop controller…

Introduction DC electric motors are very widely used. Their popularity is due to their simple control and power supply. DC motors require only two poles, negative and positive, supplied from the source of electromotive force (EMF). When current passes through the DC motor’s rotor coils, the shaft rotates. If you change…

Introduction There are a variety of applications where signals from different sources (for example, sensors) are sensed with one ADC. Such systems require an analog multiplexer with analog filters for each channel, because each signal source may have its own set of filter requirements (for example, different cutoff frequencies). An alternative…

Introduction The design uses a GreenPAK™ to control duty cycle signal for a servo motor, and a Micropower Operational Amplifier to provide and adjust the signal from the flex sensor to the GreenPAK. The complete design file is available here. It was programmed in the GreenPAK Designer software (a part of…