Part Details for SN74LVC1G3157 by Texas Instruments

PMP4715 是包括 PFC 功能的恒流 LED 驱动器，可在 12V 至 28V 范围内提供 1.4A 恒流。输入电压为高线路电压。

This reference design provides accurate measurements of ambient light intensity used to detect arc flash faults with a fast response of 1 ms: protecting or minimizing damages to power distribution switchgear. This design also monitors temperature (using switch: analog: digital or remote ): humidity: dust: and pressure accurately for online monitoring of busbar: transformers: and capacitor banks for early indication of faults: insulation failures: or ageing: resulting in increased operational life. This design provides a unique diagnostics approach within 1 ms during low load current for diagnostics of an ambient light sensor (ALS): increasing the system reliability. The sensors can be interfaced to microcontrollers with I2C or a low-power: wireless interface to perform weather transmitter functions for continuous online monitoring to simplify the system design.

TIDA-01051 参考设计用于演示极高通道数数据采集 (DAQ) 系统（如用在自动测试设备 (ATE) 中的系统）经过优化的通道密度、集成、功耗、时钟分配和信号链性能。利用串行器（如 TI DS90C383B）将多个同步采样 ADC 输出与几个 LVDS 线结合，可显著减少主机 FPGA 必须处理的引脚数量。因此，单个 FPGA 可处理的 DAQ 通道数量大幅增加，而且电路板布线的复杂性也大大降低。

This reference design is a 4-kW interleaved CCM totem pole (TTPL) bridgeless PFC reference design using a 64-pin C2000™ microcontroller: LM3410 gallium nitride device and TMCS1100 hall sensor. It is based on TIDM-02008 bidirectional interleaved CCM TTPL bridgeless PFC reference design using C2000™ MCU : and reduces the dimension of the total PCB to 145 mm by 105 mm by 35 mm. Gallium nitride (GaN) devices are used in power stage: achieving peak 98.73 % efficiency. The design includes advanced functions such as phase shedding: adaptive dead time: input cap compensation to improve PF and efficiency on the load range: and non-linear voltage loop to reduce the voltage overshoot and undershoot under load transient.

PMP4354 demonstrates an innovative buck solution for 10W A-lamp LED lighting. TPS92210 is used in the design to control high side FET running in QR mode with valley switching. TPS92210's cascode architecture also helps reduce switching loss and eliminates external sense resistor. The efficiency is >90% typically and the current regulation is <+/-3%. The transformer is eliminated in the design which eases the design and reduces overall cost.

This reference design is a 3.-kW bidirectional interleaved continuous conduction mode (CCM) totem-pole (TTPL) bridgeless power factor correction (PFC) power stage using a C2000™ real-time controller and LMG3410R070 gallium nitride (GaN) with integrated driver and protection.  This power topology is capable of bidirectional power flow (PFC and grid-tied inverter) and it uses LMG341x GaN devices: which enables higher efficiency and reduction in size of the power supply. The design supports phase shedding and adaptive dead time for efficiency improvements: input cap compensation scheme for improved power factor at light loads: and non-linear voltage loop to reduce voltage spikes under transient in PFC mode. The hardware and software available with this reference design accelerates time to market. 

This reference design implements a compact hardware-based circuit to detect the pacemaker pulse during ECG measurement. It provides indication of valid pace signal through a flag and onboard LED. This design enables the user to configure various parameters of the pace signal (amplitude: rise time: pulse duration: polarity) with software using an onboard DAC. The measured values can be read through an onboard ADC. The Pace signal is extracted: amplified: and conditioned from the noisy ECG signal on the board. It adds the Pace detection feature while used in conjunction with TI’s ADS129X series of devices.

Fault Indicators (FI) are devices installed at certain distance on overhead power lines in electric power distribution networks to detect and indicate the occurence of faults. The benefit is reduction in outage times by identifying the fault zone easily.  The TIDA-00807 reference design features an ultra‐low power MCU and discrete analog front end to monitor and measure the current and voltage parameters where it is installed.In addition: a self‐test mechanism comprising of a DAC and Hall Switch can be configured to execute a diagnostic program that permits the system to test itself.

This reference design is a digitally controlled: compact 1-kW AC/DC power supply design for server power supply unit (PSU) and telecom rectifier applications. The highly efficient design supports two main power stages: including a front-end continuous conduction mode (CCM) totem-pole bridgeless power factor correction (PFC) stage. The PFC stage features LMG341x GaN FET with integrated driver to provide enhanced efficiency across a wide load range and meet 80-plus titanium requirements. The design also supports a half-bridge LLC isolated DC/DC stage to achieve a +12-V DC output at 1-kW. Two control cards use C2000™ Piccolo™ microcontrollers to control both power stages.

This reference design: an 8-channel analog front end (AFE): is demonstrated using two AFE7444 4-channel RF transceivers and a LMK04828-LMX2594 based clocking subsystem which can enable designs to scale to 16 or more channels. Each AFE channel consists of a 14-bit: 9-GSPS DAC and a 3-GSPS ADC that is synchronized to less than 10ps skew with > 75-dB dynamic range at 2.6 GHz.

High frequency Critical-Conduction-Mode (CrM) Totem-pole power factor correction (PFC) is a simple approach for designing high density power solutions using GaN.  The TIDA-0961 reference design uses TI’s 600V GaN power stage: LMG3410: and TI’s Piccolo™ F280049 controller. This high density (165 x 84 x 40 mm) 2-stage interleaved 1.6kW design is ideal for many space constrained applications such as server: telecom: and industrial power supplies. Interleaving of the power stages reduces input and output ripple currents. Hardware is designed to pass conducted emissions: surge: and EFT requirements and helps designers achieve 80+ Titanium specifications.

Continuous-Conduction-Mode (CCM) Totem-pole power factor correction (PFC) is a simple but efficient power converter.  To achieve 99% efficiency: there are many design details that need to be taken into account.  The PMP20873 reference design uses TI’s 600VGaN  power stage: LMG3410: and TI’s UCD3138 digital controller.  The design overview provides more details on the CCM Totem-Pole topology operation: gives the detail design considerations of the circuit: and provides magnetics and firmware control design considerations. This converter design operates at 100KHz. A soft start at AC line crossover minimizes current spike and lowers THD.  The PFC Firmware measures AC current and PFC output voltage in real-time and predicts the dead time needed for the switch node to complete a full swing. The adaptive dead time control effectively minimizes both switching loss and GaN FET body diode conduction loss. A GUI is available to support parameter setting and control loop tuning.

This reference design functions from a base of silicon carbide (SiC) MOSFETs that are driven by a C2000 microcontroller (MCU) with SiC-isolated gate drivers. The design implements three-phase interleaving and operates in continuous conduction mode (CCM) to achieve a 98.46% efficiency at a 240-V input voltage and 6.6-kW full power. The C2000 controller enables phase shedding and adaptive dead-time control to improve the power factor at light load. The gate driver board (see TIDA-01605) is capable of delivering a 4-A source and 6-A sink peak current. The gate driver board implements a reinforced isolation and can withstand more than 100-V/ns common-mode transient immunity (CMTI). The gate driver board also contains the two-level turnoff circuit: which protects the MOSFET from voltage overshoot during the short-circuit scenario.