This reference design includes an analog Hall sensor and op amp circuit that can be used for position or angle sensing, with the advantages of no contact and wear, high stability, and a wide sensing range. This design analyzes two configurations of magnets and Hall sensors. This design provides adjustable offset and system gain along with op amp circuitry to achieve the desired output offset and range.
The ESC module is a very important subsystem in non-military UAVs. Users need more efficient models to achieve longer flight times, better dynamic behavior and smoother and more stable performance. The design uses an electronic speed controller (ESC) commonly used in unmanned aerial vehicles (UAVs) or drones.
Speed control is done sensorless and the motor was tested using FOC speed control up to 1.2kHz electrical frequency (12kRPM, 6 pole pair motor). Our drone ESC high-speed sensorless FOC reference design features a best-in-class FOC algorithm implementation that enables longer flight times, better dynamic performance, and higher integration resulting in smaller board size and BOM components less. Sensorless high-speed FOC control uses TI's FAST™ software observer, leveraging the InstaSPIN-Motion™ C2000™ LaunchPad and DRV8305 BoosterPack.
This is a reference design for an LED display-backlight driver. The design uses a boost power supply with adaptive feedback for efficiency and linear current sinks for a high dimming ratio (2000:1). The input voltage is 8V to 18V with 50V transients, and the load is three parallel strings of 8 LEDs (34V) at 150mA/string. The MAX16809 16-channel LED driver is featured.
New, completely wireless earbuds are charged by the battery inside their carrying case—a unique design that requires small solution sizes and efficient power components. Additionally, the large demands in this market are increasing the need to deliver equivalent functionality more economically. This ultra-low power reference design exhibits a charging case battery and boost converter powered from USB input.
This 50V/1A boost converter is designed to operate from a nominal 12V input voltage, but will operate in the automotive range of 5V - 40V. This design is low cost and requires only an area of 50mm x 50mm.
The PMP10110 is designed to convert universal input AC voltage to an isolated 17V...30V@6A, suitable for charging lead-acid and lithium-ion batteries. The converter is a constant voltage and constant current generator, the set points for output voltage (charge level) and current can be set via two PWM signals. The first stage is the PFC boost stage, while isolation and current stabilization are performed by the DC-DC half-bridge stage. The isolated quasi-resonant flyback converter provides all internal voltages and some additional current to the external load (fan or analog section), specifically 12V@400mA and 5V@300mA.
This application note provides a reference design for an IEEE® 802.3af-compliant, 12.95W adjustable-output powered-device module. Assembled on a 12cm² PCB, the module is based on the MAX5941B PWM controller and includes hot-swap power switching, a DC-DC converter, and a pair of ORing diode bridges for compatibility with an external 12V adapter. This article details the performance of the module and provides a schematic, PCB layout, and components list for the design.
TIDA-00653 is a non-isolated 48 to 12V bidirectional converter reference design for 48V battery applications supported by the UCD3138 digital power controller. The design is flexible and can operate in a ZVS switching mode topology to optimize light-load efficiency, or in a hard-switching topology for simple system design. The bidirectional converter uses automatic phase shedding and offset technology for light loads and uses adaptive dead-band optimization to achieve greater than 96% compound efficiency gain. Because efficiency is greatly improved, heat losses are reduced, eliminating the need for air or liquid cooling in automotive applications. In addition, using the UCD3138 high control frequency controller and hardware-based state machine allows for miniaturization and frees up the system CPU for other functions such as battery management.
The TEA2095 add-on board is designed for incorporation into existing resonant power supplies by replacing the secondary rectifier diodes. The add-on board consists of the TEA2095 Dual SR controller IC and low-ohmic MOSFETs in LFPAK package.
Evaluation kits (EV kits) are often the best tool for evaluating the applicability of a particular DC-DC converter for a specific application. Simulation, though never as accurate as the real hardware, is much faster and can be very effective for initial evaluations. Maxim Integrated’s MAX17504EVKITA is a 3.3V output EV kit for the MAX17504 member of the Himalaya family of high-voltage, synchronous step-down converters. The MAXIM_EESIM_MAX17504EVKITA.wxsch is a circuit file that enables simulation of this EV kit using the free EE-Sim SE simulation tool, downloadable from the Maxim Integrated website. EE-Sim SE is a variation of the commercial SIMPLIS/SIMetrix tool, which can also be used with this file.
Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-medium isolated DC-DC power-conversion applications. However, the use of an optocoupler or an auxiliary winding on the flyback transformer for voltage feedback across the isolation barrier increases the number of components and design complexity. The MAX17690 eliminates the need for an optocoupler or auxiliary transformer winding and achieves ±5% output voltage regulation over line, load, and temperature variations.
The TIDEP-01010 reference design leverages TI single-chip millimeter-wave (mmWave) technology to implement an area scanner capable of detection and localization in 3D space. Using TI 60-GHz mmWave sensors, presence detection, as well as the ability to gauge the object's trajectory and speed, enables dynamic adjustment of the safety zone's size depending on the object's speed of approach, as well as the ability to predict before a safety zone is breached.
The MAXREFDES1269 demonstrates how to build a DC-DC buck converter using the MAX20098 step-down controller for 5V DC output applications from a 6V to 36V input. This reference design delivers up to 20A at 5V output. The design uses a six-layer board. Table above shows an overview of the design specification.
TIDA-00679 TI reference design demonstrates a solution for automotive LED taillight applications (tail/brake lights, turn signals, reverse lights). This reference design uses the TPS92630 linear LED driver, which is powered directly from the car battery through a smart battery reverse diode. The design offers the potential for cost savings and efficiency through low power dissipation and improved system thermal performance. The reference design also includes CISPR25 testing, pulse testing (per ISO 7637-2), and EMI/EMC radiated and conducted emissions testing. See TIDA-00677 for a similar design using the TPS92630-Q1 driven by a buck converter . See TIDA-00678 for a similar design driven by a boost converter .
System example showing how to build a WIFI node by integrating the TM4C1294 MCU and CC3100 network processor from the TM4C product family. This reference example demonstrates the function of remotely controlling the operating status of an MCU through the Internet.
This document details the MAXREFDES138# subsystem reference design, a 36V to 57V input, 12V output, no-opto flyback isolated power supply capable of 12W. Design files and test results are included. Hardware is available for purchase.
MAXREFDES116# is an efficient, active clamp topology, isolated power supply design with 24V input, and a 5V output at 40W of power (8A). The design features the MAX17599, an active clamp, current-mode PWM controller optimized for industrial supplies. This entire circuit fits on a 20mm x 70mm board.
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