This application note describes a solution to control AC-Power with a cycle skip logic along with system monitoring features using GreenPAK™. At hardware level, a push button controls 4 8-bit patterns programmed on-chip, and at software level, a 16-bit pattern is modified through I2C. The solution can be expanded to include more patterns along with pattern length at both hardware and software level.

This application note describes a GreenPAK based solution to control AC-Power with a phase cut logic along with system monitoring features. A push button controls 2 phase delays programmed onchip at hardware level, and an I2C compatible MCU modifies the phase delays at software level via I2C. The solution can be expanded to include more programmed delays for hardware control and additional system monitoring features.

This solution demonstrates a compact, low-cost, single-board computer. The dual-core MPU and matching PMIC provide enough horsepower to run graphical human machine interface (HMI) and artificial intelligence (AI) edge applications concurrently. The system features many wired interfaces and supports Wi-Fi, Bluetooth^® Low Energy, and near field communication (NFC) wireless connectivity.

System Benefits:

• Powerful dual-core MPU with integrated DRP-AI engine supports running graphical HMI and edge-based AI/ML from a single device
• Power management IC (PMIC) and RZ MPU are matched, reducing overall design complexity and system cost
• Dual gigabit Ethernet, Wi-Fi, Bluetooth Low Energy and NFC provide versatile options for cloud connectivity and offload

Applications:

• Machine vision, cameras, edge AI inferencing
• IoT gateways and hubs
• Human Machine Interface (HMI)

The wearable and personal-electronics industries are booming. Devices in this market vary wildly by application and use. These multifunction devices are designed to help people in their daily activities and make their lives comfortable. They can be found in different shapes, colors, sizes, and safety measures. They may differ significantly from each other, but they all have one thing in common—the need for a battery and a battery charger.

These portable devices are typically powered by batteries installed internal to the device, which must be charged efficiently and quickly on a regular basis. The user’s charging experience also needs to meet the requirement of safety, comfort, and convenience.

This article presents the trade-offs between linear chargers and switch-mode chargers. Specific challenges arise with each topology when used to charge a battery pack in wearable applications. The differences between linear and switch-mode topologies are described with details about how each topology can address the requirements of wearable and personal electronic devices. These details range from thermal performance to cost, including size, application area, features and flexibility, electromagnetic interference (EMI), bill-of-material (BOM) counts, charge time, and so on. Finally, there is an evaluation for which charger topology serves which type of requirement best. Understanding charger-related system-level details enables the designer to save both time and cost.

Texas Instruments hermetic packaged devices are fabricated in accordance with MIL-PRF-38535 and TI's own world class quality and reliability standards. The only age requirement for QML products is stated in MIL-PRF-38535 paragraph 3.10: Solderability. All parts shall be capable of passing the solderability test in accordance with TM 2003 of MIL-STD-883 on delivery. These products are warranted to do so in accordance with the Texas Instruments Incorporated Standard Terms and Conditions of Sale for Semiconductor Products.

Boot-time optimizations are a critical component for a better Auto infotainment experience. This application report captures the details on how to improve android boot time and is meant to be a reference implementation. The end user (OEM/ODM/Customer/Product Owner) can review the optimizations that were tried and make a choice for the final product accordingly.

This application report describes an alternative use of the TLC555-Q1 device as a charge pump. The square-wave output switching between the supply voltage and GND with few additional capacitors and diodes makes the device suitable for generating a positive or negative voltage multiplier. Using the TLC555-Q1 device as a charge pump is a cheap and easy solution for doubling, tripling, or inverting the supply voltage.

A charge pump can be used in automotive applications requiring reverse battery protection. A diode can also be used for battery protection; however, it causes a voltage drop and lowers efficiency. The charge pump is also capable of driving a MOSFET transistor with low drain-to-source on resistance.

Charge pumps can be used in a nonsynchronous rectifier when in low dropout mode to cause a high output ripple with light load. The charge-pump output can be connected to the BOOT pin for providing the necessary voltage to drive the upper-pass transistor.