Overview
The STNRG012TR, produced by STMicroelectronics, is a digital combo multi-mode PFC (Power Factor Correction) and time-shift LLC (Inductor-Inductor-Capacitor) resonant half-bridge controller. This device is designed to manage both AC and DC input lines, making it versatile for various high-efficiency power conversion applications. It integrates a multi-mode PFC controller, a high-voltage double-ended controller for LLC resonant half-bridge, and an 800 V-rated start-up generator. The STNRG012TR is optimized for compliance with stringent energy-saving regulations and is particularly suited for applications requiring advanced power management and high efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | -1 to 305 | VAC |
| Start-up Circuit Voltage | Up to 800 | V |
| IC Supply Voltage (VCC) | 9.5 to 19 | V |
| VCORE Voltage Range | -0.3 to 5.5 | V |
| Junction Temperature Operating Range | -40 to 150 | °C |
| Storage Temperature Range | -55 to 150 | °C |
| Peak Source Current (High-Side Gate Driver) | -0.5 to -0.8 | A |
| Peak Sink Current (High-Side Gate Driver) | 0.75 to 1.2 | A |
| Package Type | 20-pin SO |
Key Features
- Digital combo multi-mode PFC and time-shift LLC resonant half-bridge controller
- Management of both AC and DC input lines
- Enhanced fixed-on-time multi-mode TM PFC controller with input voltage feed-forward and THD optimizer
- Complete set of PFC and half-bridge protections, including brownout protection
- On-board 800 V start-up circuit and line sense
- Advanced digital algorithms for high performance, BOM optimization, and robustness
- Internal ROM memory for digital algorithms and NVM memory for key application parameters
- External communication through a 2-pin UART for monitoring, black box storing, and software patch upload
Applications
- Street lighting
- Home lighting
- Industrial power conversion systems
- High-efficiency power-factor-corrected converters
Q & A
- What is the primary function of the STNRG012TR?
The STNRG012TR is a digital combo multi-mode PFC and time-shift LLC resonant half-bridge controller, designed to manage both AC and DC input lines for high-efficiency power conversion.
- What is the input voltage range of the STNRG012TR?
The input voltage range is up to 305 VAC.
- What type of package does the STNRG012TR come in?
The STNRG012TR comes in a 20-pin SO package.
- What are the key protections provided by the STNRG012TR?
The device includes a complete set of PFC and half-bridge protections, including brownout protection.
- How does the STNRG012TR manage startup?
The device has an on-board 800 V start-up circuit that charges the capacitor connected to the VCC pin during startup.
- What is the role of the internal ROM and NVM memory in the STNRG012TR?
The internal ROM stores digital algorithms, and the NVM memory stores key application parameters, allowing for wide configurability and calibration.
- How does the STNRG012TR communicate externally?
The device communicates externally through a 2-pin UART, enabling functions such as monitoring, black box storing, and software patch upload.
- What are some typical applications of the STNRG012TR?
Typical applications include street lighting, home lighting, and industrial power conversion systems.
- What is the junction temperature operating range of the STNRG012TR?
The junction temperature operating range is -40°C to 150°C.
- How does the STNRG012TR optimize power factor correction?
The device uses a multi-mode scheme with constant on-time (COT) control, input voltage feed-forward, and THD optimization to enhance PFC efficiency.
