BU21TD2WNVX-TL

BU21TD2WNVX-TL Application Field and Working Principle

BU21TD2WNVX-TL is a Voltage Regulators - Linear produced by STMicroelectronics. It has a Max Supply Voltage of 30 V, a maximum output current of 1.6 A, and a minimum output voltage of 0.8 V. It has an integrated transconductance amplifier and high-side current sink, which enables improved current sensing accuracy and flexible current protection.

Features and Benefits

• Integrated transconductance amplifier and high-side current sink for improved current sensing accuracy and flexible current protection
• Optional output filter for improved EMC performance
• Programmable slew rate for improved transient response and fast overload recovery

Applications

• Renewable Energy Systems
• Smart Meters
• Motor Control Systems
• Intelligent Lighting
• Automotive Systems

Working Principle

BU21TD2WNVX-TL is based on a linear control loop. The circuit consists of a current sensing element, a reference voltage and a current control loop driven by the sensing element. The current sensing element is an amplifier cascaded with an op-amp. The amplifier is used to sense the instantaneous current. This signal is then compared to the reference voltage and the output is controlled based on the difference between the two. The current control loop adjusts the output voltage so that the current is always within the reference parameters.

Conclusion

BU21TD2WNVX-TL is an advanced voltage regulator with integrated transconductance amplifier, high-side current sink, adjustable slew rate and low-power control loop for flexible and energy saving applications. It can be used in a variety of applications, from renewable energy systems to motor control systems and intelligent lighting.