Diodes Incorporated AL17052 700V Buck Converter
Diodes Inc. AL17052 700V Buck Converter is a universal AC high-voltage input step-down converter providing accurate 5V output, outstanding dynamic performance, and load regulation without requiring an opto-coupler over line and load regulation. Typical applications are power supplies for offline low-power IoT (Internet of Things) devices that support WPAN (wireless personal area network) connectivity. The AL17052 features ultra-low standby operation power of 10mW to support this connectivity. It also features a high conversion efficiency of 60% from rectified mains voltage to 5V for 50mA output and 50% at 10mA light loading during IoT system in sleep and idle mode.
With the integration of embedded 700V high-voltage MOS switches, the AL17052 is designed with a high degree of integration, which requires supporting fewer electronic components to form minimum e-BOM (bill-of-material) with a small form factor package and PCB space. The AL17052 has rich protection features to enhance the system's safety and reliability. It has overtemperature protection, VCC undervoltage lock function, overcurrent protection, and overload protection. The Diodes Inc. AL17052 is available in the SOT-25 package.
Features
- Small inductor (330µH) operation
- Ultra-fast startup, < 8ms
- Internal MOSFET up to 700V
- Fixed option for output of 5V
- No-load operation power less than 10mW
- High efficiency 60% at 50mA output
- High light-load efficiency of 50% at 10mA output
- Universal 85 to 300VAC input range
- Supports low component-count Buck topologies
- Auto-restart for overcurrent and overload faults
- Excellent load and line regulation
- Fast transient response
- Constant Voltage (CV) control
- Undervoltage Lockout (UVLO) protection for input voltage
- Overcurrent protection
- Overload protection
- Overtemperature Protection (OTP)
- Lead-free and fully RoHS-compliant
- Halogen and antimony-free green device
Functional Block Diagram
Published: 2024-07-02
| Updated: 2024-08-18