| Title of Reference Design | Flyback 48V Car Battery | Flyback Converter For Set-Top Boxes | Isolated Flyback Converter | Single-Output Flyback Converter | Miniature Flyback Converter |
| Image |  |  |  |  |  |
| Key Attractions | The reference design provides a 12V power supply with a wide input range, surge protection, low noise, and primary-side regulation for use in automotive systems and harsh environments. | The reference design offers efficiency, low standby power use, wide input voltage support, multiple outputs, built-in protection, and compliance with safety and EMI standards for use in digital devices. | The reference design boosts low battery voltages to a stable output, offers electrical isolation for protection, and suits USB-powered devices needing 5V output from varying input sources. | The reference design offers wide input voltage compatibility, efficiency, low standby power, compact design, and protection features, making it a reliable solution for various applications. | The reference design with a wide input voltage range, galvanic isolation, and protection features provides reliable performance in isolated environments with efficient power conversion. |
| Highlights | The TIDA-01344 is a power supply design from Texas Instruments made for cars that use 48-volt batteries, like hybrid and electric vehicles. It changes the 48 volts into a steady 12-volt output, up to 2 amps, and can handle a wide input range from 10 to 80 volts. It is built to survive sudden spikes up to 100 volts and includes filters to reduce electrical noise, meeting car industry standards. The design uses a special type of circuit called a flyback converter that doesn’t need extra parts like an optocoupler, making it smaller and more reliable. It also includes safety features to protect against power surges. The system works well alongside other converters to ensure 12-volt power is always available, even if one part fails. A special chip, called the LM5022-Q1, controls everything and helps the system respond quickly to changes. This design is useful in many parts of electric and hybrid cars, like motor systems, transmissions, and control units. | The reference design from STMicroelectronics is optimised for set-top box applications and supports a wide input voltage range of 90-265Vrms at 45-66Hz, delivering four distinct outputs with an average power output of 40W and a peak of 51W. It features the advanced L6668 controller, operating in fixed-frequency PWM current mode, and is engineered for high efficiency, consuming less than 1W in standby with a residual 5V at 50mA, aligning with global standby regulations. The design emphasises cost-effectiveness and simplicity through a low component count, while offering key protections such as short circuit protection with automatic restart. It meets EN50022-Class B standards for electromagnetic interference and complies with EN60065 safety standards, maintaining a creepage and clearance distance of 6.4mm. | The MCP1661 flyback converter reference design from Microchip is a small power circuit that safely separates the input and output using galvanic isolation, which helps protect devices from electrical problems. It uses a special transformer to do this, allowing power to pass without direct electrical contact. The MCP1661 chip inside boosts the voltage from batteries like AA (alkaline, lithium, NiMH, or Li-ion) and works well with different power levels. It can increase the voltage up to 32V and typically provides 125mA when converting from 3.3V to 12V. At light loads, it saves power by sending fewer pulses but still keeps the output steady. In this design, the transformer helps store energy and set the voltage around 13.5V on one side. | The Power Integrations reference design works with input voltages from 90V AC to 265V AC. It provides a stable 12V output at 2.5A, delivering up to 30W. It uses a flyback converter with the LNK6766E chip to ensure high efficiency and low standby power. The converter runs at a fixed frequency of 132kHz, keeping the transformer small and reducing the size of the output filter. It operates efficiently at full load and reduces ripple current, improving performance and reliability. The design adjusts to different load conditions to maintain efficiency and consumes less than 30mW at light loads or in standby. It includes protections like overvoltage, over-temperature, and auto-restart in case of problems, ensuring safety and long-term reliability. It also meets electromagnetic compatibility standards and supports power factor correction (PFC) for better efficiency and compliance worldwide. | The MAXREFDES1247 is a reference design from Maxim Integrated. It uses a special controller and a flyback transformer to convert power efficiently, running at 125kHz. The power supply can work with input voltages from 4.5V to 60V, thanks to a special transformer that extends the range. The transformer keeps the primary and secondary sides isolated with 1500V RMS for safety, and an optocoupler helps control the voltage by sending feedback between sides. This design is useful for creating small, isolated power supplies for things like industrial machines, cars, or sensor systems, especially where electrical noise or high voltages are a concern. The design is cheap, efficient, and can be customised with overvoltage and undervoltage protection features. It works by transferring energy between the primary and secondary windings of the transformer alternately in a flyback mode, and it supports input voltages from 17V to 60V. The power supply is protected with current limits and ensures safe operation with good isolation. |
| Applications | The reference design is suitable for car motors, gears, controls, and battery systems. | The reference design is suitable for applications like HDD, SCART, and LNBP21 for satellite STBs. | The reference design can be used for USB-powered applications. | The reference design is suitable for energy-conscious applications. | The reference design is suitable for industrial, automotive, and embedded applications. |
| OEM Brand | Texas Instruments (TI) | STMicroelectronics | Microchip | Power Integrations | Maxim Integrated |
| URL | Link | Link | Link | Link | Link |
Nidhi Agarwal is Senior Technology Journalist at EFY with a deep interest in embedded systems, development boards, and IoT cloud solutions.
