TL2842BD

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The TL2842BD is an advanced high-efficiency, high-accuracy, low-noise, 2A synchronous buck switching regulator controller, suitable for point-of-load DC/DC and AC/DC converters. It is designed for applications with input voltages ranging from 4.5V to 28V and output voltages from 0.5V and up to 10V. The TL2842BD has wide range of features to facilitate a wide variety of designs, including pin-selectable operation, current limit, programmable foldback current limit, voltage tracking, output voltage sequencing and superior transient response.

Features of TL2842BD

• Integrated low-side MOSFET driver
• 2A Minimum current limit
• Programmable foldback current limit
• Voltage tracking
• Pin-selectable output voltage
• Output voltage sequencing
• Superior transient response
• Wide input voltage range

TL2842BD Application Fields

TL2842BD is ideally suited for applications ranging from 5V/2A to 24V/2A, point-of-load voltage conversion in digital systems. The device is designed for high-efficiency, high-power density with an integrated low-side MOSFET driver and is suitable for DC/DC and AC/DC conversion. It is also suitable for applications with input voltages from 4.5V to 28V and output voltages from 0.5V to 10V.

Applications for TL2842BD include:

• DC/DC power supplies
• Computer server voltage conversion
• Networking
• Automotive
• Aerospace
• Military systems
• Power Management ICs (PMIC)

TL2842BD Working Principle

The TL2842BD works on the principle of non-synchronous buck converter, where an inductor and a switch is used to convert the input voltage to output voltage. The switching device is controlled by a constant frequency PWM (Pulse Width Modulation) to regulate voltage and current flow. The integrated MOSFET drivers reduce losses due to rise time of the MOSFETs.

The maximum switch current for the TL2842BD is 2A, which is suitable for applications with up to 12V input voltage, and the maximum switch current can be selected from power stage section. The device offers a wide range of features including programmable foldback current limit, voltage tracking, output voltage sequencing and superior transient response for more precise voltage regulation.

The TL2842BD also incorporates thermal protection and under-voltage lockout features to ensure a safe design. It also features a slew rate control function that reduces noise generated by the switching voltage, and open loop operation to minimize input capacitance in designs requiring less output capacitance.

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