Overview
The UCC256403DDBR is a fully featured LLC (Inductor-Inductor-Capacitor) resonant controller designed by Texas Instruments. This device is optimized for high-performance power management applications, particularly in AC/DC power supplies. It is engineered to work in conjunction with a PFC (Power Factor Correction) controller to provide a complete power system with minimal external components. The UCC256403DDBR is notable for its ultra-low power and ultra-quiet standby operation, making it suitable for applications requiring stringent standby power and noise standards, such as those defined by the DoE Level VI and EU CoC Tier-2 External Power Supply Standards.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package | SOIC (DDB) | 14-pin Small Outline Integrated Circuit package |
| Operating Temperature Range | -40°C to 125°C | Temperature range for reliable operation |
| Input Voltage Range | 11.25V to 30V | Minimum and maximum input voltage for the device |
| Topology | Half Bridge, LLC | Resonant converter topology supported by the device |
| Gate Driver Capability | 0.6 A source, 1.2 A sink | Current capability of the integrated high-voltage gate driver |
| Standby Power Consumption | < 40µA | Low power consumption in standby mode |
Key Features
- Optimized Low Power Mode and Burst Mode Algorithm: Includes burst mode with soft-on and soft-off periods to minimize audible noise at no load and standby.
- Hybrid Hysteretic Control (HHC): Provides best-in-class line and load transient response.
- Integrated High-Voltage Gate Driver: With 0.6 A source and 1.2 A sink capability.
- Robust Adaptive Dead-Time Control: Automatically adjusts dead-time for optimal efficiency and robust operation.
- Over Temperature, Output Over Voltage, Input Under Voltage Protection: Includes multiple levels of overcurrent protection.
- Active X-Capacitor Discharge Function: Not included in the UCC256403, but available in other variants like the UCC256404.
- Programmable Overcurrent Protection: Allows for customizable overcurrent protection to prevent damage from excessive current draw.
- High Efficiency: Up to 95% efficiency for reduced energy consumption and heat generation.
Applications
The UCC256403DDBR is suitable for various industrial and commercial applications, including:
- Data Centers and Cloud Computing
- Industrial Automation and Control Systems
- Telecommunications and Networking Equipment
- Medical Devices and Healthcare Equipment
- Large Screen Televisions, AC-DC Adapters, and LED Drivers
These applications benefit from the device's high efficiency, low standby power consumption, and minimal audible noise during operation.
Q & A
- Q: What is the UCC256403DDBR?
A: The UCC256403DDBR is a resonant-mode controller IC designed by Texas Instruments for high-performance power supply applications, particularly in LLC resonant converter topologies.
- Q: What is the maximum input voltage for the UCC256403DDBR?
A: The maximum input voltage for the UCC256403DDBR is 30V.
- Q: Can the UCC256403DDBR be used in medical devices?
A: Yes, the UCC256403DDBR can be used in medical devices due to its high reliability and low noise operation.
- Q: What are the key features of the UCC256403DDBR's burst mode operation?
A: The burst mode includes soft-on and soft-off periods to minimize audible noise, and it operates with a very low quiescent current and biased optocoupler operation.
- Q: How does the UCC256403DDBR achieve high efficiency?
A: The device achieves high efficiency through its hybrid hysteretic control, integrated high-voltage gate driver, and robust adaptive dead-time control.
- Q: What protection features are included in the UCC256403DDBR?
A: The device includes over temperature, output over voltage, input under voltage protection, and multiple levels of overcurrent protection.
- Q: Can the UCC256403DDBR be used with other Texas Instruments products?
A: Yes, it can be used with UCC28056 or UCC28064A PFC controllers and UCC24624 synchronous rectifier controller to offer a complete power supply solution.
- Q: What is the operating temperature range of the UCC256403DDBR?
A: The operating temperature range is -40°C to 125°C.
- Q: What is the standby power consumption of the UCC256403DDBR?
A: The standby power consumption is less than 40µA.
- Q: Are there any equivalents or alternatives to the UCC256403DDBR?
A: Yes, alternatives include the UCC256404DDBVT from Texas Instruments, L6562A from STMicroelectronics, and IR1150 from Infineon Technologies..
