UC2825ADW

Name: UC2825ADW
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

The UC2825ADW by Texas Instruments is a dual 2 A current mode controller that utilizes PWM technology

6,675 Effective Inventory

UC2825ADW

Effective Inventory6,675

The UC2825ADW by Texas Instruments is a dual 2 A current mode controller that utilizes PWM technology

Manufacturer Part # : UC2825ADW
Package/Case: SOIC-16
Brand: Texas Instruments
Product Categories : DC DC Switching Controllers
Series : UC2825

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UC2825ADW DataSheet

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UC2825ADW Details

The UC2825ADW is a high-speed PWM controller from Texas Instruments, designed for reliable power management in various applications. This device features current mode control of up to 500 kHz, integrated oscillator with programmable frequency, and adjustable deadtime control, making it suitable for switch-mode power supplies, DC-DC converters, battery chargers, UPS systems, motor control applications, power factor correction circuits, LED drivers, solar inverters, and industrial control systems.

Key Features

High-Speed PWM Controller: Offers high-speed PWM control for reliable power management in various applications.
Current Mode Control of up to 500 kHz: Enables current mode control with a frequency range of up to 500 kHz, suitable for demanding power conversion applications.
Integrated Oscillator with Programmable Frequency: Features an integrated oscillator that can be programmed to operate at various frequencies, allowing for flexible system design.
Adjustable Deadtime Control: Provides adjustable deadtime control for optimized power conversion and reduced electromagnetic interference (EMI).
Shutdown Function for Overload Protection: Includes a shutdown function that can be used to protect the device from overload conditions.
Soft Start Capability: Offers soft start capability for controlled startup of power conversion systems.
Under Voltage Lockout: Features an under voltage lockout (UVLO) circuit that prevents the device from operating when the input voltage is below a certain threshold.

Applications

The UC2825ADW is suitable for various applications, including:

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

Where to Use

The UC2825ADW is designed for use in various applications where high-speed PWM control and adjustable deadtime are required. This device can be used in a wide range of industries, including:

Aerospace
Automotive
Industrial automation
Medical devices
Renewable energy systems

How to Use

The UC2825ADW is a highly configurable device that requires careful design and implementation. Please refer to the datasheet for detailed information on how to use this device in your application.

Application Circuit

The application circuit diagram for the UC2825ADW illustrates how to connect the device to a power conversion system. It includes connections for input voltage, output current, and control signals, ensuring proper operation and reliable power management.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Complementary

The UC2825ADW can be complemented by other devices from Texas Instruments, such as the UC3844 or the LM5117, which offer similar functionality and performance characteristics. When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the maximum frequency range supported by the UC2825ADW?

A: The UC2825ADW supports a frequency range of up to 500 kHz. For more details, refer to the datasheet for specific operating conditions and limitations.

Q: Can the UC2825ADW be used in automotive applications?

A: Yes, the UC2825ADW is suitable for use in automotive applications where high-speed PWM control and adjustable deadtime are required. However, please ensure that the device meets the specific requirements of your application, including temperature range, voltage tolerance, and electromagnetic compatibility (EMC) considerations.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

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

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification UC2825ADW PDF Download

FAQs

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.