QUASI-RESONANT SMPS CONTROLLER The L6565DTR is a high-voltage resonant controller manufactured by STMicroelectronics. Below are the key specifications, descriptions, and features based on the available knowledge base:
### **Specifications:**
- **Manufacturer:** STMicroelectronics
- **Category:** PMIC - AC-DC Converters, Offline Switchers
- **Topology:** Quasi-Resonant (QR) Flyback Controller
- **Input Voltage Range:** Up to 600V (for high-voltage startup)
- **Operating Frequency:** Adjustable, up to 300kHz
- **Output Power:** Suitable for medium-power applications (typically up to 250W)
- **Driver Output Current:** Up to 600mA (source/sink capability)
- **Startup Current:** Low (typically 150µA)
- **Standby Power Consumption:** < 1W (for energy-efficient designs)
- **Protection Features:** Overvoltage Protection (OVP), Overload Protection (OLP), Brownout Protection, and Latch-off for fault conditions
- **Package:** SO-8 (Surface Mount)
### **Descriptions:**
The L6565DTR is a high-performance quasi-resonant flyback controller designed for offline power supplies. It operates in transition mode (TM) to achieve high efficiency and low EMI emissions. The IC integrates a high-voltage startup circuit, reducing external component count. It is commonly used in AC-DC adapters, LED drivers, and auxiliary power supplies.
### **Features:**
- **Quasi-Resonant Operation:** Reduces switching losses and improves efficiency.
- **High-Voltage Startup:** Eliminates the need for an external startup resistor.
- **Adjustable Frequency:** Allows optimization for efficiency and EMI performance.
- **Soft Switching:** Minimizes switching noise and stress on components.
- **Comprehensive Protection:** Includes OVP, OLP, and thermal shutdown.
- **Low Standby Power:** Meets energy-saving standards (e.g., ENERGY STAR).
- **SO-8 Package:** Compact and suitable for space-constrained designs.
This information is strictly based on the manufacturer's datasheet and technical documentation.
