TPS65720 Power Management IC (PMIC) for Wearable and Fitness Devices

This report presents C-coding style guidelines to improve the efficiency of the Texas Instruments (TI)(tm)TMS320 C2x/C2xx/C5x/C54x/C3x C-compilers indicating what to avoid or what to promote when coding a TMS320 in C. For development time savings apply these guidelines before deciding to re-write a time-critical portion in assembly.To illustrate some of the guidelines a case study (vector do

TPS6213x/4x/5x/6x/7x How to Measure the Control Loop of the TPS62130/40/50/60/70

This application note describes the design of a circuit using the Texas Instruments TPS2306 hot swap power manager to sequence the supply voltages limit inrush current and provide fault protection to a dual-supply voltage system. The system uses both 3.3-V and 5-V power and is modeled as a resistor in parallel with a bulk filter capacitor at each input power rail. Component values are selected

PGA309 Quick Start System Reference Guide

The Texas Instruments bq27505 series system-side Li-ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-ion battery packs. The device requires little system microcontroller firmware development. The bq27505 resides on the system main board and manages an embedded battery (nonremovable) or a removable battery pack.

This application report presents a solution to control a half-bridge LLC resonant DC/DC converter with synchronous rectification system using TMS320F2802x microcontrollers. The Piccolo;trade; TMS320F2802x series of devices are part of the family of C2000;trade; microcontrollers that enable cost-effective design of power supply systems. With these devices it is possible to control power stages in

This document describes application examples and reference designs for the TPS61040 boost converter. The following application example describes how to implement the TPS61040 low-power dc-dc boost converter to drive white light LEDs. Also provided are design equations for calculating the proper resistor values for a white LED driver that includes provisions for dimming the LED brightness. The ref

LB-47 High Voltage Adjustable Power Supplies

Four TI CMOS clocked first-in first-out (FIFO) memories the 2k?9 SN74ACT807 the 512?18 SN74ACT7803 the 256?18 SN74ACT7805 and the 64?18 SN748ACT7813 provide synchronous interfaces that conform to the requirements of many high-performance systems. The FIFO architecture limits the glue logic necessary and limits the timing constraints to the system. Each FIFO is easily expanded to accommodate var

This application report describes two related pieces of software that are used together to download an application over the DM644x UART0 serial interface and run it out of the ARM internal memory. The discussion begins with a description of a host application that executes on a user’s PC and includes a description of how to interface to the ROM boot loader of the DM644x device. The discussion of

TVP5160 3DYC Operation

The DM643x evaluation module (EVM) requires several clock frequencies to run the system properly. The current clocking proposal of the low-cost EVM consists of the VCXO chip PI6CX100-27W the PLL chip PLL1705 several bus drivers and a few oscillaors and crystals. This application report discusses several optimized clocking proposals with the Texas Instruments new clock drivers and recommends a m

This application report describes how to interface an MSP430x11x(1) 16-bit RISC-like mixed-signal microcontroller and a TLV0831 8-bit A/D converter. This report is written for the MSP430x11x(1) family

This application report describes how to interface the DAC7558 digital-to-analog converter (DAC) to the MSP430F449 mixed signal processor.

Low-Cost Circuit Biases VCO for Cable and TV

Many voltage regulator applications require multiple outputs, such as a computer's power supply or a regulator used to meet the voltage requirements inside an automobile. Some of these applications r

The following sections of this application note review the DDC112?s input range describe how to make it bipolar show how to experiment with bipolar ranges using the DDC112 Evaluation Fixture and finally how to derive the noise contribution that comes with making the range bipolar.