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UC2825ADW
The UC2825ADW by Texas Instruments is a dual 2 A current mode controller that utilizes PWM technologyUC2825ADW
The UC2825ADW by Texas Instruments is a dual 2 A current mode controller that utilizes PWM technology
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製造商零件號 # : UC2825ADW
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包裝/封裝: SOIC-16
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製造商: Texas Instruments
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產品分類 : DC DC Switching Controllers
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UC2825ADW 數據表
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詳細說明
Texas Instruments' UC2825ADW is a highly versatile pulse-width modulation (PWM) controller integrated circuit, specifically designed for power supply and motor control applications. With an operating voltage range of 8V to 35V, this IC offers compatibility with a wide array of power supply designs, providing engineers with a flexible and adaptable solution. The precision oscillator, featuring programmable frequency and duty cycle, ensures that power converters can be customized to meet specific performance requirements. Additionally, the high-current totem-pole outputs can directly drive power MOSFETs or IGBTs, streamlining circuit design and reducing the need for external components. Equipped with built-in protections such as overcurrent and overtemperature shutdown, the UC2825ADW enhances the reliability and safety of power systems. The adaptive PWM control facilitates efficient power delivery, maximizing energy conversion and overall system performance. Moreover, the device's synchronization capability for multi-phase operation enables scalability in high-power applications, adding an extra layer of versatility and functionality. In conclusion, the UC2825ADW stands as a comprehensive and reliable PWM controller, empowering engineers to develop innovative and efficient power supply and motor control solutions
主要特徵
- High-speed PWM Controller
- Current Mode Control of up to 500 kHz
- Integrated Oscillator with Programmable Frequency
- Adjustable Deadtime Control
- Shutdown Function for Overload Protection
- Soft Start Capability
- Under Voltage Lockout
應用
- Switch-mode power supplies
- DC-DC converters
- Battery chargers
- UPS systems
- Motor control applications
- Power factor correction circuits
- LED drivers
- Solar inverters
- Industrial control systems
- Telecommunication equipment
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Topology | Boost, Flyback, Forward, Full bridge, Half bridge, Push pull | Control mode | Current, Voltage |
| Duty cycle (max) (%) | 50 | Switching frequency (max) (kHz) | 1000 |
| Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Leading edge blanking, Multi-topology, Programmable max duty cycle, Soft start, Synchronization pin | UVLO thresholds on/off (V) | 9.2/8.4 |
| Operating temperature range (°C) | -40 to 85 | Rating | Catalog |
| Gate drive (typ) (A) | 2 | Vin (max) (V) | 22 |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is UC2825ADW?
The UC2825ADW is a high-speed, low-power BiCMOS pulse width modulator (PWM) controller designed by Texas Instruments. It is widely used in power supply and motor control applications to regulate power delivery and optimize system efficiency.
How Does UC2825ADW Work?
The UC2825ADW operates by comparing a control voltage with a sawtooth waveform to generate a pulse-width modulated signal. This signal is used to control the switching of power transistors in applications such as power supplies and motor drives, regulating the output voltage or motor speed with high precision.
How Many Pins does UC2825ADW have and What are the Functions of the Pinout Configuration?
The UC2825ADW is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- RT, CT: Timing components for setting the oscillator frequency and duty cycle.
- VREF: Voltage reference input.
- COMP: Error amplifier output for feedback control.
- FB: Feedback input for regulation control.
- SD, CS: Shutdown and current sense inputs.
- OUTA, OUTB: PWM outputs for driving power transistors.
- VCC: Power supply pin for the IC.
- GND: Ground pin for the IC.
What are the Pros and Cons of UC2825ADW?
Pros:
- High Speed: Operates at high frequencies to provide fast and precise control.
- Low Power: Achieves efficient power management with low power consumption.
- Precision Control: Provides precise regulation and modulation of power signals.
- Wide Application: Suitable for various power supply and motor control applications.
- Integrated Functions: Includes error amplifier, oscillator, and PWM outputs for simplified system design.
Cons:
- External Components: May require additional external components for complete power supply or motor drive circuits.
- Noise Sensitivity: Requires careful consideration of noise sources and layout for optimal performance.
- Complexity: Operating at high speeds and regulating power can introduce complexity in system design and testing.
Are There Any Equivalents/Alternatives to UC2825ADW for Recommendation?
- The UC3825 from Texas Instruments is a similar PWM controller with additional features for power supply control.
- Alternatives to the UC2825ADW include the TL494 from Texas Instruments and the SG3525 from STMicroelectronics.
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