Power Integrations

TOP258EN  

AC DC Converters, Offline Switches

The Power Integrations TOP258EN is a high-efficiency, high-density, synchronous, current-mode, primary-side regulated flyback controller designed for use in a wide range of applications, including USB Power Delivery (PD) adapters, class D audio amplifiers, and other high-power off-line applications.

Description:

The TOP258EN is a highly integrated solution that combines a power switch, a current sense comparator, an error amplifier, an oscillator, and other control logic in a single chip. It uses a proprietary current-mode control scheme that provides excellent line and load regulation, fast transient response, and low electromagnetic interference (EMI).

Features:

• High efficiency: The TOP258EN achieves high efficiency levels of up to 93%, which helps to reduce power consumption and heat dissipation.
• High-density: The device is available in a compact 5mm x 6mm QFN package, making it suitable for space-constrained applications.
• Synchronous rectification: The TOP258EN uses synchronous rectification on the secondary side, which reduces conduction losses and improves efficiency.
• Primary-side regulation: The device provides primary-side regulation, which simplifies the design and reduces component count.
• Current-mode control: The TOP258EN uses a proprietary current-mode control scheme that provides excellent line and load regulation and fast transient response.
• Protection features: The device includes over-current protection, over-voltage protection, and over-temperature protection to ensure safe and reliable operation.

Applications:

The TOP258EN is suitable for a wide range of applications, including:

• USB Power Delivery (PD) adapters
• Class D audio amplifiers
• TV power supplies
• Computer power supplies
• LED lighting
• Industrial control systems
• Battery chargers

In summary, the Power Integrations TOP258EN is a high-efficiency, high-density, synchronous, current-mode, primary-side regulated flyback controller that offers excellent performance and reliability for a wide range of applications. Its compact size, high efficiency, and integrated protection features make it an ideal choice for space-constrained and high-power applications.

TOP258EN Documents

Download datasheets and manufacturer documentation for TOP258EN

PCN Assembly/Origin :

Added Assembly Site 10/Jul/2023      

Datasheets :

TOP252-62      

Reference Design Library :

DER-161: 35W, 24V @ 1.4A, 90 ~ 265VAC in       RDK-142: 35W, 5V @ 2.2A, 12V @ 2A, 90 ~ 264VAC