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UCC2897ARGPR
+Lista de MateriaisIC REG CTRLR MULT TOPOLOGY 20QFN
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FabricanteTexas Instruments
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Peça do Fabricante #UCC2897ARGPR
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Pacote QFN-20
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Em Estoque4887
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Especificações
| Atributo | Valor |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up/Step-Down |
| OutputConfiguration | Positive, Isolation Capable |
| Topology | Flyback, Forward Converter |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 8.5V ~ 16V |
| Frequency-Switching | 250kHz |
| DutyCycle(Max) | 70% |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Current Limit, Enable, Soft Start |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 20-VFQFN Exposed Pad |
Visão Geral
Description
One of its key features is the integrated synchronous rectifier control, which helps improve efficiency by reducing power losses typically associated with diode rectification. The device supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), making it versatile in handling various power levels and load conditions. Additionally, the UCC2897ARGPR offers protection features such as over-voltage protection, under-voltage lockout, and thermal shutdown, which enhance the safety and robustness of power systems. Its compact packaging and advanced features make it a popular choice in telecom, industrial, and consumer electronics applications.
Equivalent
Features
1. Active Clamp Control: It supports active clamp reset for improved efficiency and reduced voltage stress on the MOSFET.
2. Synchronous Rectification: It incorporates control for synchronous rectifiers, enhancing efficiency particularly in low-output voltage applications.
3. Programmable Frequency: The device allows programmable switching frequency up to 1 MHz, enabling design flexibility.
4. Soft Start: It includes a programmable soft-start function, which helps in minimizing inrush current during startup.
5. Current Mode Control: The UCC2897ARGPR uses peak current mode control, offering better load transient response and simpler loop compensation.
6. Adjustable Dead Time: The controller offers adjustable dead time between the main switch and the active clamp switch.
7. Protections: It features various protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown to ensure robust operation.
8. Wide Input Voltage Range: It is suitable for a wide range of input voltages, making it versatile for different applications.
These features make the UCC2897ARGPR ideal for power supply applications requiring high efficiency and reliability.
Pinout
1. PWM Control: Manages the pulse-width modulation for efficient power conversion.
2. Active Clamp Reset: Ensures efficient energy recovery and reduces stress on the transformer and switches.
3. Soft Start: Gradually increases the output voltage during startup to avoid inrush currents.
4. Overcurrent Protection: Protects the system from excessive current by shutting down the output.
5. Synchronization: Allows the controller to synchronize with an external clock for better system integration.
6. Error Amplification: Provides feedback control to maintain output voltage accuracy under varying load conditions.
These functions make the UCC2897ARGPR well-suited for use in high-density power supply applications, such as telecom and server power systems.