UC2856DWTR: Features, Specs & More
In the ever-evolving world of electronics, the TI UC2856DWTR Current Mode PWM (Pulse Width Modulation) Controller is a standout component. This device plays a critical role in a wide range of power management applications, offering performance and efficiency that make it an invaluable asset for engineers and designers. In this comprehensive article, we'll delve into the intricacies of the UC2856DWTR, uncovering its definition, key features, specifications, applications, and a closer look at its manufacturer.
Catalog
UC2856DWTR's Overview
The TI UC2856DWTR is a current-mode pulse-width modulation (PWM) controller designed to regulate the voltage and current within a power supply. It supports a variety of topologies, including boost, flyback, forward, half-bridge, and push-pull configurations. With a maximum output current of 1.5A and a switching frequency of 220kHz, this controller offers excellent performance for efficient power conversion.
Key Features
Let's delve into the standout features that make the UC2856DWTR a standout in the world of electronics:
· Current Mode Control: Ensures excellent regulation and high efficiency by adjusting the duty cycle based on the current through the inductor.
· Oscillator Accuracy: The internal oscillator operates at 220 kHz, with an accuracy of ±10 kHz, providing stable switching frequencies.
· Dual PWM Outputs: The controller offers 2 PWM outputs, ideal for designs that require multiple channels.
· High Output Current: The device can handle up to 1.5A of output current, making it suitable for demanding power applications.
· UVLO (Undervoltage Lockout): The UC2856DWTR features a turn-on threshold of 7.7V, ensuring the controller only operates when sufficient voltage is available.
· Adjustable Features: While it doesn't feature adjustable outputs, the controller includes key pins like On/Off and Synchronous, adding flexibility in various applications.
Specifications
Now, let's take a closer look at the technical specifications that define the capabilities of the UC2856DWTR:
Type | Parameter |
Type | Current Mode PWM Controller |
Control Method | Current |
Topology | Boost|Flyback|Forward|Full-Bridge|Half-Bridge|Push-Pull |
Number of PWM Outputs | 2 |
Oscillator Accuracy (kHz) | 200 |
Switching Frequency (kHz) | 220 |
Maximum Duty Cycle (%) | 50 |
Output Current (mA) | 1500(Max) |
Rise Time (ns) | 40 |
Fall Time (ns) | 40 |
Operating Supply Voltage (V) | 40(Max) |
Maximum Operating Supply Voltage (V) | 40 |
Maximum Supply Current (mA) | 23 |
Maximum Power Dissipation (mW) | 1000 |
Adjustable Output | No |
On/Off Pin | Yes |
Synchronous Pin | Yes |
UVLO Turn-On Threshold (V) | 7.7 |
Minimum Operating Temperature (°C) | -40 |
Maximum Operating Temperature (°C) | 85 |
Packaging | Tape and Reel |
Mounting | Surface Mount |
Package Height | 2.35(Max) |
Package Width | 7.6(Max) |
Package Length | 10.5(Max) |
PCB changed | 16 |
Standard Package Name | SO |
Supplier Package | SOIC |
Pin Count | 16 |
Lead Shape | Gull-wing |
Applications
The TI UC2856DWTR is designed for use in a variety of power conversion applications. Its versatility makes it an excellent choice for the following:
· DC-DC Power Converters: It excels in regulating the output voltage and current in power supplies, providing stable and efficient power conversion.
· Battery-Powered Devices: Its efficiency makes it ideal for devices that require long battery life and reliable power output.
· Inverters: The UC2856DWTR can be used in DC to AC inverters, ensuring proper control of the switching elements and maintaining power quality.
· AC-DC Converters: It's suitable for use in AC-DC applications, especially where precise power control is critical.
· Industrial Power Supplies: Given its high power handling and precision, it's commonly used in industrial equipment that demands reliable power delivery.
UC2856DWTR's Manufacturer
Texas Instruments (TI), established in 1930, is a global leader in semiconductor and technology solutions, known for its pioneering contributions to the electronics industry. Specializing in the design and manufacture of analog and digital circuits, microcontrollers, and processors, TI has played a pivotal role in shaping technological advancements across diverse sectors, including industrial, automotive, consumer electronics, and communication.
Conclusion
The TI UC2856DWTR Current Mode PWM Controller is a top choice for engineers looking for reliable, efficient power management solutions. With its multiple topologies, high switching frequency, and flexible application range, it's well-suited for everything from DC-DC converters to industrial power supplies.
