Overview
The UCC256404DDBR, manufactured by Texas Instruments, is a highly integrated LLC controller designed for resonant converter applications. This component features a built-in high-voltage gate driver, making it a comprehensive solution for power systems when paired with a PFC controller. It is particularly suited for applications requiring stringent standby power requirements without the need for a separate standby power converter. The UCC256404DDBR supports efficient burst mode operation with programmable burst power levels and hysteresis, enhancing performance in standby conditions while minimizing audible noise. Its hybrid hysteresis control ensures excellent line and load transient responses, making it a robust choice for modern power supply designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage | 600 | V | |
| Supply Voltage | 13 to 26 | V | |
| Supply Current | 2.2 | mA | |
| Operating Temperature | -40 to 125 | °C | |
| Mounting Type | Surface Mount | ||
| Package/Case | 16-SOIC | 14 leads |
Key Features
- Integrated high-voltage gate driver simplifies design and reduces component count.
- Supports efficient burst mode operation with programmable power levels and hysteresis.
- Hybrid hysteresis control for superior line and load transient responses.
- Compatible with UCC28056 or UCC28064A PFC controllers for a complete power solution.
- Designed to meet stringent standby power requirements without additional converters.
Applications
The UCC256404DDBR is ideal for use in a variety of power supply applications, particularly in systems requiring high efficiency and low standby power consumption. Common applications include industrial power supplies, consumer electronics, and telecommunications equipment. Its ability to provide a complete power solution with minimal external components makes it a preferred choice for designers looking to optimize space and cost in their power systems.
Q & A
What is the primary function of the UCC256404DDBR?
The UCC256404DDBR serves as a full-featured LLC controller with an integrated high-voltage gate driver, designed to manage resonant converter operations efficiently.
Can the UCC256404DDBR operate without a PFC controller?
While it can function independently, the UCC256404DDBR is optimized to work in conjunction with PFC controllers like the UCC28056 or UCC28064A for enhanced performance.
What are the benefits of the burst mode in UCC256404DDBR?
Burst mode in the UCC256404DDBR reduces audible noise during standby operations and improves efficiency by allowing programmable burst power levels and hysteresis.
What is the operating temperature range for UCC256404DDBR?
The UCC256404DDBR operates effectively within a temperature range of -40°C to 125°C.
How does the hybrid hysteresis control benefit the UCC256404DDBR?
Hybrid hysteresis control enhances the device's responsiveness to line and load changes, ensuring stable operation under varying conditions.
Is the UCC256404DDBR suitable for high-power applications?
Yes, its design supports high-power applications, particularly in systems requiring efficient power management and low standby consumption.
What package does the UCC256404DDBR come in?
It is available in a 16-SOIC package with 14 leads, suitable for surface mount applications.
Can the burst mode be disabled in the UCC256404DDBR?
Yes, burst mode can be disabled via pin configuration, allowing flexibility in operation based on specific application needs.
What are the typical applications of the UCC256404DDBR?
Typical applications include industrial power supplies, consumer electronics, and telecommunications systems where efficient power conversion is critical.
What is the significance of the UCC256404DDBR's compatibility with UCC24624?
Compatibility with the UCC24624 synchronous rectifier controller allows for a complete and optimized power solution, enhancing overall system efficiency and performance.
