AiT Semiconductor, a leading provider of advanced semiconductor solutions, has released the AP8275, a cutting-edge AC-DC PWM controller, revised in December 2022. Designed to deliver exceptional performance with minimal external components, the AP8275 sets a new standard for high-efficiency, off-line converters.
Product Highlights:
The AP8275 integrates a current mode Pulse Width Modulator (PWM) controller with a high-voltage start circuit, tailored for high-performance applications.
Key features include:
- Multi-mode Operation: Supports QR-PWM, QR-PFM, and Burst-mode for enhanced efficiency and standby energy savings.
- Superior EMI Performance: Achieved through frequency modulation and soft driver techniques.
- Comprehensive Protections: Includes Brown-in/out, X-cap discharge, output overvoltage protection, external over-temperature protection, cycle-by-cycle current limiting, and overload protection.
Key Specifications:
- Internal HV Start-up Circuit: Simplifies design and reduces component count.
- Adaptive PWM Switching Frequency: 65/85kHz for optimal performance.
- No-load Consumption: Less than 50mW at 230VAC, ensuring compliance with energy-saving standards.
- VDD Operating Voltage Range: 8~40V, providing flexibility for various applications.
- Adjustable AC Line Input Compensation: Enhances performance across different input conditions.
Comprehensive Protection Suite:
The AP8275 offers extensive protection features, including:
- Over Temperature Protection (OTP)
- Output Overvoltage Protection
- Cycle-by-Cycle Over Current Protection (OCP)
- Output Open/Short Protection
- Patented DMG Resistor Short Protection (Latch)
- Secondary Rectifier Short Protection
- Overload Protection (OLP)
Applications:
Ideal for standby power applications, open-frame SMPS, and adapters, the AP8275 is available in a compact SOP7 package, making it an excellent choice for space-constrained designs.
