UCC24612-2DBVR

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UCC24612-2DBVR

SYNC RECTIFIER FLYBACK

  • Производитель
  • Мфр. Часть #UCC24612-2DBVR
  • Пакет SOT-23 (DBV)-5
  • Лист данных
  • В наличии6260

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Спецификации

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Applications Adapters
Voltage-Input 4V ~ 28V
Current-Supply 4 A
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case SC-74A, SOT-753

Обзор

Description

The UCC24612-2DBVR is a high-performance synchronous rectifier (SR) controller designed by Texas Instruments. It is used in flyback converters to improve efficiency by replacing diodes with MOSFETs for rectification. The device is part of the UCC24612 family, which is optimized for various voltage and current levels, and features a wide input voltage range, fast turn-on and turn-off times, and minimal power consumption.
Key features of the UCC24612-2DBVR include automatic sleep mode to enhance light-load efficiency, adaptive gate drive for optimal MOSFET control, and protection features like Under-Voltage Lockout (UVLO) to ensure safe operation. It supports both continuous and discontinuous conduction modes, making it versatile for various power supply designs.
This controller is available in a small SOT-23 package, making it suitable for compact designs. It is commonly used in applications like adapters, chargers, and low-power offline power supplies where efficiency and thermal performance are critical. Overall, the UCC24612-2DBVR provides an efficient solution for improving the performance of power conversion systems.

Features

The UCC24612-2DBVR is a synchronous rectifier controller from Texas Instruments, optimized for flyback converters. Key features include:
1. Efficiency Enhancement: Designed to improve efficiency by replacing conventional Schottky diodes with MOSFETs in the rectification stage.
2. Wide Supply Voltage Range: Operates from 4.2V to 28V, accommodating various input conditions.
3. Low Operating Current: Consumes minimal power, with a typical operating current of 250 µA.
4. Fast Turn-Off: Ensures rapid MOSFET turn-off with a maximum turn-off delay of 30 ns, reducing reverse current and improving efficiency.
5. Adaptive Turn-On: Optimizes turn-on timing to minimize body diode conduction and reduce losses.
6. Gate Drive Capability: Provides a gate drive voltage up to 10V, compatible with most MOSFETs used in synchronous rectification.
7. Protection Features: Includes cycle-by-cycle current limiting and thermal shutdown for enhanced reliability and protection.
8. Compact Package: Available in a small SOT-23 package, facilitating space-constrained designs.
Overall, the UCC24612-2DBVR is ideal for enhancing power supply efficiency, particularly in applications like adapters, chargers, and other low-power AC-DC and DC-DC converters.

Package

The UCC24612-2DBVR is housed in a SOT-23-6 package. This is a small outline package with 6 leads, commonly used for surface-mount applications in electronic circuits.

Pinout

The UCC24612-2DBVR is a synchronous rectifier (SR) controller designed to improve the efficiency of flyback and resonant converters. It comes in a 6-pin SOT-23 package. The functions of its pins are as follows:
1. VDD (Pin 1): Supply voltage input for powering the device.
2. GND (Pin 2): Ground reference for the device.
3. SR (Pin 3): Gate drive output for controlling the external MOSFET.
4. VS (Pin 4): Sense input for detecting the drain-source voltage of the SR MOSFET.
5. EN (Pin 5): Enable input to control the operation of the SR controller.
6. NC (Pin 6): No connection; not internally connected.
This controller is engineered for efficient power conversion, offering features like light-load management and adaptive dead-time control, which optimize the performance and efficiency of power supply designs.

Manufacturer

The UCC24612-2DBVR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and integrated circuits. They serve various industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI is known for its innovation and development of analog and embedded processing products, which are widely used in different electronic applications.

Application

The UCC24612-2DBVR is a synchronous rectifier controller designed for improving efficiency in power supply applications. Its primary application areas include flyback converters commonly used in AC/DC adapters, USB chargers, and other consumer electronics. It also serves in industrial power supplies and LED drivers where efficient energy conversion and minimized heat dissipation are crucial. By replacing conventional diode rectifiers, the UCC24612-2DBVR enhances the overall efficiency of power supplies, particularly in low-output voltage and high-output current applications.

Equivalent

The UCC24612-2DBVR is a synchronous rectifier controller from Texas Instruments. Equivalent products might include the NCP4305 from ON Semiconductor, the SRK2001 from STMicroelectronics, and the IR1167 from Infineon Technologies. These components are used in similar power supply applications to improve efficiency by controlling MOSFETs for synchronous rectification. Always check the specific features and electrical characteristics to ensure compatibility with your design.

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