Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| DrivenConfiguration | Low-Side |
| ChannelType | Independent |
| NumberofDrivers | 2 |
| GateType | N-Channel MOSFET |
| Voltage-Supply | 4.25V ~ 26V |
| Current-PeakOutput(SourceSink) | 1.5A, 4A |
| InputType | Non-Inverting |
| Rise/FallTime(Typ) | 23ns, 19ns |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The UCC24624DR is a dual synchronous rectifier controller designed by Texas Instruments. It is optimized for use in flyback and LLC resonant converters, significantly enhancing efficiency by replacing diode rectifiers with MOSFETs in the secondary side of the power supply. The device supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), automatically adjusting to varying load conditions for optimal performance.
The UCC24624DR features adaptive gate drive technology to minimize body diode conduction, reducing power loss and improving overall efficiency. Its wide VDD operating range of 4.5 V to 28 V allows for versatility in various applications. The controller also includes built-in protection features such as VDD undervoltage lockout (UVLO), overcurrent protection, and over-temperature shutdown, enhancing reliability and safety.
With its compact form factor and robust performance, the UCC24624DR is suitable for applications in high-efficiency power supplies, including adapters, servers, and consumer electronics. Its efficient power conversion capabilities make it a valuable component in modern power management systems.
The UCC24624DR features adaptive gate drive technology to minimize body diode conduction, reducing power loss and improving overall efficiency. Its wide VDD operating range of 4.5 V to 28 V allows for versatility in various applications. The controller also includes built-in protection features such as VDD undervoltage lockout (UVLO), overcurrent protection, and over-temperature shutdown, enhancing reliability and safety.
With its compact form factor and robust performance, the UCC24624DR is suitable for applications in high-efficiency power supplies, including adapters, servers, and consumer electronics. Its efficient power conversion capabilities make it a valuable component in modern power management systems.
Equivalent
The UCC24624DR is a synchronous rectifier controller from Texas Instruments. Equivalent products include:
1. Infineon IR1167 - A smart secondary-side driver IC for synchronous rectification.
2. NCP43080 by ON Semiconductor - A high-performance driver for synchronous rectification.
3. NCP4305 by ON Semiconductor - Optimized for flyback converter topologies.
4. MP6908A by Monolithic Power Systems - A secondary-side synchronous rectifier controller.
These alternatives might not be drop-in replacements and should be evaluated for compatibility.
1. Infineon IR1167 - A smart secondary-side driver IC for synchronous rectification.
2. NCP43080 by ON Semiconductor - A high-performance driver for synchronous rectification.
3. NCP4305 by ON Semiconductor - Optimized for flyback converter topologies.
4. MP6908A by Monolithic Power Systems - A secondary-side synchronous rectifier controller.
These alternatives might not be drop-in replacements and should be evaluated for compatibility.
Features
The UCC24624DR is a dual synchronous rectifier controller designed to improve the efficiency of isolated flyback power converters. Key features include:
1. Dual SR Control: It manages two independent synchronous rectifiers (SRs) to enhance efficiency on both the primary and secondary sides of a flyback transformer.
2. Adaptive Dead-Time Control: Automatically adjusts the dead time between the turn-off of the primary-side switch and the turn-on of the SRs, minimizing body diode conduction and reducing power loss.
3. Wide Operating Range: Capable of operating in a wide voltage range, making it suitable for various applications.
4. Light Load Efficiency: Provides a low-power mode to maintain efficiency at light loads by reducing switching losses.
5. Protection Features: Includes features like under-voltage lockout (UVLO) and thermal shutdown for enhanced reliability and safety.
6. Compact Package: Available in a small SOIC-8 package, supporting space-constrained designs.
These features make the UCC24624DR ideal for use in high-efficiency power supply designs, where minimizing energy loss is crucial.
1. Dual SR Control: It manages two independent synchronous rectifiers (SRs) to enhance efficiency on both the primary and secondary sides of a flyback transformer.
2. Adaptive Dead-Time Control: Automatically adjusts the dead time between the turn-off of the primary-side switch and the turn-on of the SRs, minimizing body diode conduction and reducing power loss.
3. Wide Operating Range: Capable of operating in a wide voltage range, making it suitable for various applications.
4. Light Load Efficiency: Provides a low-power mode to maintain efficiency at light loads by reducing switching losses.
5. Protection Features: Includes features like under-voltage lockout (UVLO) and thermal shutdown for enhanced reliability and safety.
6. Compact Package: Available in a small SOIC-8 package, supporting space-constrained designs.
These features make the UCC24624DR ideal for use in high-efficiency power supply designs, where minimizing energy loss is crucial.
Pinout
The UCC24624DR is a dual synchronous rectifier controller for flyback power supplies from Texas Instruments. It is housed in an 8-pin SOIC package. Here’s a brief overview of its pin functions:
1. VDD (Pin 1): Power supply input for the device.
2. GND (Pin 2): Ground reference for the controller.
3. VS (Pin 3): High-voltage sense pin to monitor the flyback transformer secondary winding voltage.
4. OUTA (Pin 4): Output driver for the gate of the synchronous rectifier MOSFET on the secondary side for one channel.
5. OUTB (Pin 5): Output driver for the gate of the synchronous rectifier MOSFET on the secondary side for the second channel.
6. CSG (Pin 6): Current sense ground pin for monitoring current through the synchronous rectifiers.
7. SW (Pin 7): Switch node sense input to detect the turn-off of the primary-side switch.
8. NC (Pin 8): Not connected; used for package mechanical stability.
The UCC24624 is designed to improve efficiency by controlling MOSFETs to replace diodes in the secondary side of flyback converters.
1. VDD (Pin 1): Power supply input for the device.
2. GND (Pin 2): Ground reference for the controller.
3. VS (Pin 3): High-voltage sense pin to monitor the flyback transformer secondary winding voltage.
4. OUTA (Pin 4): Output driver for the gate of the synchronous rectifier MOSFET on the secondary side for one channel.
5. OUTB (Pin 5): Output driver for the gate of the synchronous rectifier MOSFET on the secondary side for the second channel.
6. CSG (Pin 6): Current sense ground pin for monitoring current through the synchronous rectifiers.
7. SW (Pin 7): Switch node sense input to detect the turn-off of the primary-side switch.
8. NC (Pin 8): Not connected; used for package mechanical stability.
The UCC24624 is designed to improve efficiency by controlling MOSFETs to replace diodes in the secondary side of flyback converters.
Manufacturer
The UCC24624DR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company known for designing and manufacturing a wide array of electronic components, including integrated circuits (ICs), analog chips, embedded processors, and digital signal processors. TI's products are widely used in various applications such as automotive, industrial, consumer electronics, communications, and more. The company is recognized for its focus on innovation, quality, and the development of energy-efficient solutions.
Application
The UCC24624DR is a synchronous rectifier controller designed for improving efficiency in AC/DC and isolated DC/DC power supplies. Its primary application areas include flyback, forward, and resonant half-bridge converters used in various power supply systems. These systems are commonly found in high-efficiency power supplies for consumer electronics, industrial equipment, telecommunications, and data centers. By enabling synchronous rectification, the UCC24624DR helps reduce power losses and improve thermal performance, making it suitable for applications requiring compact, efficient, and reliable power conversion solutions.
Package
The UCC24624DR is a dual synchronous rectifier controller from Texas Instruments, provided in an 8-pin SOIC package with the designation "DR." This package type is suitable for surface mounting, offering compactness and ease of integration into power supply designs.