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Application Notes

Understanding the CAN Controller on the TMS320C24x DSP Controller

Texas Instruments
The Texas Instruments (TI)(tm) TMS320F241 TMS320C241 and TMS320F243 digital signal processor (DSP) controllers contain an on-chip Control Area Network (CAN) module. This module is a FullCAN controller (Specification 2.0B). This application report describes the TMS320X241/3 CAN module. Software examples are included for different modes of operation of the on-chip CAN module along with an applicati

Using TI Technology to Simplify Bluetooth Pairing Via NFC

Texas Instruments
Bluetooth pairing usually involves some level of user interaction to confirm the identity of the user and/or the devices themselves. There are many pairing mechanisms available across the versions of

Transimpedance Considerations for High-Speed Operational Amplifiers

Texas Instruments
Designing high-resolution detection circuits using photodiodes presents considerable challenges because bandwidth gain and input-referred noise are coupled together. This application note reviews the basic issues of transimpedance design provides a set of detailed design equations explains those equations and develops an approach to easily compare potential solutions.

Solenoid Driving with DRV8841/DRV8842

Texas Instruments
DRV8841/DRV8842 Solenoid Driving with DRV8841/DRV8842

Using GCC/GDB With CC2538 (Rev. A)

Texas Instruments
This document describes how to set up an open source software-based development environment for the Texas Instruments CC2538 using Eclipse as IDE.

UART Bootloader for Hercules RM42 MCU

Texas Instruments
This application report describes how to communicate with the Hercules™ UART bootloader. The UART bootloader is a small piece of code that can be programmed at the beginning of Flash to act as an application loader as well as an update mechanism for applications running on a Hercules Cortex™-R4 based RM42 microcontroller.

Single Cell Impedance Track Printed-Circuit Board Layout

Texas Instruments
bq20z70/90 Printed-Circuit Board Layout Guide

OA-13 Current Feedback Loop Gain Analysis and Performance Enhancement (Rev. B)

Texas Instruments
With the introduction of commercially available amplifiers using the current feedback topology byComlinear Corporation in the early 1980’s previously unattainable gain and bandwidths in a DC coupledamplifier became easily available to any design engineer. The basic achievement realized by the currentfeedback topology is to de-couple the signal gain from the loop gain part of the overall tra

U-110 1.5 Mhz Current Mode IC Controlled 50-Watt Power Supply

Texas Instruments
The UC3825 family of PWM control ICs is optimized for high-frequency switched-mode power-supply applications. This application note describes the development of a 1.5 MHz current-mode IC-controlled 50W power supply. Push-pull topology is used for this DC-to-DC converter application of +48V input to +5V at 10A output. Increases in switching speed and dynamic performance are made possible by the U

bq2084-V133 to bq2084-V140 Change List

Texas Instruments
This document describes the design considerations required to change a bq2084-V133 design to a bq2084-V140 solution. Find the latest ordering information and data sheet on the World Wide Web at http:/

Interfacing the DAC8806 and DAC8820 to MSP430 Microcontrollers

Texas Instruments
This application report presents a method for interfacing the DAC8806 and DAC8820 single-channel, current-output, 14-/16-bit multiplying digital-to-analog converters ? to the MSP430F449 processor usin

Production 2: Data Flash Programming/Calibrating the bq20z80 Gas Gauges (Rev. B) (Rev. B)

Texas Instruments
This application report presents a strategy for high-speed economical calibration and data flash programming of the bq20z80 advanced gas gauge chipset family. VB6 code examples are provided along with step-by-step instructions for preparing a golden battery pack.

Using the MSP430 Launchpad as a Standalone I2C Host for Audio Products (Rev. A)

Texas Instruments
TLV320AIC3254, TAS5717, MSP430 Launchpad Using the MSP430 Launchpad as a Standalone I2C Host for Audio Products

Transition Guide for Migrating from the bq2091 to the bq2092

Texas Instruments
Transition Guide for Migrating from the bq2091 to the bq2092

AN-726 Station Management Simplified

Texas Instruments
AN-726 Station Management Simplified

Digital Control of Two Phase Interleaved PFC and Motor Drive Using MCU With CLA

Texas Instruments
Power factor correction (PFC) is used in power systems operating from single phase AC to correct for thenon linearity of the rectifier. Use of PFC in motor drives is increasing because of increased regulation fromthe power utility side. However integration of PFC and field oriented control of motor on a single controllerremains challenging from a processor bandwidth point of view while keep

Five steps to a great PCB layout for a step-down converter

Texas Instruments

Especially for switch-mode power supplies (SMPSs), the printed circuit board (PCB) layout is a critical but often under appreciated step in achieving proper performance and reliability. Errors in the PCB layout cause a variety of misbehaviors including poor output voltage regulation, switching jitter, and even device failure. Issues like these should be avoided at all costs, since fixing them usually requires a PCB design modification. However, these pitfalls are easily circumvented if time and thought are spent during the PCB layout process before the first PCBs are ever ordered.

This article presents five simple steps to ensure that your next step-down converter’s PCB layout is robust and ready for prototyping.

Key Design Considerations for the bq27500 and bq27501

Texas Instruments
This application report provides the basic operating theory and key design considerations for the bq27500 and bq27501 single-cell Li-ion fuel gauge ICs with the Impedance Track™ algorithm. The bq27500/501 ICs are designed to reside on the system's main board in applications with an embedded or removable battery pack. To achieve best results the fuel gauge ICs must work properly with the ba

Implementing DDR2 PCB Layout on the TMS320DM357 DMSoC (Rev. A)

Texas Instruments
This application report contains implementation instructions for the DDR2 interface contained on the TMS320DM357 digital media system-on-chip (DMSoC) devices. The approach that was taken to specify interface timing for the DDR2 interface is quite different than on previous devices.

The previous approach specified device timing in terms of data sheet specifications and simulation models. The sy

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