Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin
Photocoupler
The following circuit diagram showcases a 350W audio power supply circuit designed using L6569, which was introduced by STMicroelectronics as a novel electronic ballast half-driver. This self-oscillating driver IC leverages a bipolar CMOS-DMOS (BCD) manufacturing process and includes an internal bootstrap configuration. Unlike earlier models like the IR2155 and IR2151, this IC eliminates the need for an external fast recovery bootstrap diode, allowing it to be used interchangeably with these devices. Additionally, a dead time control circuit has been integrated into both the high-drive (HO) and low-drive (LO) circuits. The time gap between the square-wave pulses generated at pins 7 and 5 is precisely 1.2 microseconds, preventing two external transistors from being "common." The 200W electronic transformer circuit depicted in Figure 1-1 serves as a specialized audio power supply. Furthermore, I’ve compiled a collection of foreign audio ICs that might interest you.
Below is the corresponding 350W audio-dedicated power supply circuit diagram:
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In my recent exploration of power supply designs, I stumbled upon this particular 350W audio power supply circuit. It’s fascinating how STMicroelectronics has managed to optimize the L6569 IC, making it more efficient and user-friendly compared to its predecessors. The internal bootstrap configuration not only simplifies the design but also enhances reliability by reducing component count. The dead time control feature adds another layer of safety and performance optimization, ensuring smooth operation without interference between the high and low sides of the circuit.
The accompanying image shows a detailed layout of the circuit, which is particularly useful for anyone looking to build or understand high-power audio systems. If you’re interested in diving deeper into this topic, I recommend checking out some of the foreign audio ICs available in the market today. These components often come with unique features tailored for specific applications, providing engineers with a broader range of options when designing audio equipment.
Overall, this circuit represents a significant advancement in power supply technology, especially for those working on audio amplifiers or similar projects. If you have any questions about implementing this design or need further clarification on certain aspects, feel free to reach out!
