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Integrated circuits and reference designs will help you innovate and differentiate your powertrain current sensors subsystem. A high magnitude of current flows through the micro-ohm shunt, which results in a small amount of voltage drop across the shunt. Using current shunt monitors, this voltage is amplified and converted into digital for further signal processing.

This shunt-based current sensor reference design provides an accuracy of < 0.2% FSR over a temperature range of -40 to 125°C. Precision current sensing is essential in a number of automotive applications, including battery management systems, motor currents, and others. Generally, nonlinearity, temperature drift, shunt tolerances in these locations can cause poor accuracy results. This design solves these problems by using TI’s ...

This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current sensors.

The function of this reference design is to monitor the isolation resistance of a high voltage bus to the chassis ground. Monitoring the isolation strength of coupling devices and components from high voltage to the chassis ground is a necessary feature in HEV’s and EV’s as battery management systems, traction inverters, DC/DC converters, onboard chargers, and other subsystems operate at high voltage (greater than 60V).

  The Vienna rectifier power topology is used in high power three phase power factor (AC/DC) applications such as off-board electric vehicle EV chargers and telecom rectifiers. Control design of the rectifier can be complex.

Resonant converters are popular DC/DC converters frequently used in server, telecom, automotive, industrial and other power supply applications. Their high performance (efficiency, power density, etc.), improving requirements of the various industry standards, and the ever increasing power density goals have made these converters a good choice for medium to high power applications.

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 240V input voltage and 6.6kW full power.

Texas Instruments has announced new DLP Pico controllers that deliver advanced light control capabilities in smaller form factors for mass-market 3D scanners and 3D printers. DLPC347x controllers offer the micron-to-sub-millimeter resolution typically found in high performance, industrial-grade applications in a smaller form factor for desktop 3D printers and portable 3D scanners.

It has been announced that Mouser Electronics is now stocking the 16-bit ADS112C04 delta-sigma analogue-to-digital converter (ADC) from Texas Instruments (TI). Drawing currents as low was 315µA, the highly integrated ADS112C04 enables reduced system cost and component count in applications that measure small sensor signals, including resistance temperature detectors (RTDs), thermocouples, thermistors, resistive bridge sensors, and medical m...

  An On-Board Charger (OBC) is used in an Electric Vehicle (EV) or Hybrid Electric Vehicle (HEV) to charge the traction battery from 48-800V.

  The PMP10654 reference design is a dual isolated output, fly-buck power module for single IGBT driver bias. The two voltage rails are suitable for providing the positive and negative bias to an IGBT gate driver in motor drives for EV/HEV and industrial applications.  

The TIDA-00794 reference design is a temp sensing solution for IGBT thermal protection in HEV/EV traction inverter system. It monitors the IGBT temperature via the NTC thermistor integrated inside the IGBT module. It provides thermal shut down to the IGBT gate drivers once the NTC thermistor temperature rises above the programmed threshold.  

A charging station is part of the grid infrastructure installed along a street, parking lot or in a home garage; its primary purpose is to supply the power to the PHEV for charging the battery. An onboard charger is responsible for the final stage of charging the battery pack. It takes the AC power source from the EVSE and transforms the power into the required battery-charging profile.

Reverse polarity is standard protection required in an automotive environment. When battery cables are detached and reconnected there is a probability of connecting the wires to wrong terminals of the battery. This mistake could damage the components in Electronic Control Units (ECU). To avoid damage to the ECU there is a need for reverse polarity protection. Schotky diodes could be used but will have a constantly high power loss.

Texas Instruments presents a system example for an active cell balancing battery management system. The TMS570LS0432 microcontroller commands EMB1402 EVM to monitor the battery cells and perform charge/discharge from one battery cell to an external 12V supply. The user can view the cell status and control cell balancing from a GUI running on the host PC.

Texas Instruments' reference design is an automotive, 400W, phase-shifted full-bridge converter which generates the 12V output from a 48V car battery. The enhanced phaseshifted full-bridge controller implements programmable delays which ensure zero voltage switching (ZVS) over a wide range of operating conditions. The output implements synchronous rectification, which enables fast transient response and a high loop bandwidth.

TI’s mmWave Sensors provide a number of unique benefits for applications to locate, track, and count people.

Today's automotive power consumtion is 3KW, which will increase to 10KW in next 5 years and 12V batttary is unable to provide that much power. 48-12V bi-directional convertor provides high power requirement solution with two phases each capable of running 28A.  This solution allows bidirectional current control of both phases using a C2000 control stick and firmware OCP & OVP. 

The TIDA-01168 reference design is a four-phase, bidirectional DC-DC converter development platform for 12-V/48-V automotive systems. The system uses two LM5170-Q1 current controllers and a TMS320F28027F microcontroller (MCU) for the power stage control. LM5170-Q1 subsystems use average current feedback for current control whereas the C2000 microcontroller provides voltage feedback.