TPS54335ADDA

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The TPS54335ADDA is a DC/DC Regulator that offers a range of features and capabilities. It is a single and dual-output voltage regulator that is suitable for use in a variety of automotive, industrial and consumer applications. This device provides excellent transient response and low quiescent current. The TPS54335ADDA is a true synchronous buck regulator, offering both voltage and current mode operation.

The TPS54335ADDA operates from a 4.5V to 40V input and can provide output voltages from 0.8V to 39V. The output current capability is up to 3A with a single output or up to 4A with dual outputs. The TPS54335ADDA features a temperature range of -40C to +125C, over-current protection, over-voltage protection and short-circuit protection. The regulator provides high efficiency with low EMI. The TPS54335ADDA is a highly integrated regulator, offering a small solution size with cost savings.

The TPS54335ADDA is suitable for a variety of automotive, industrial, and consumer applications. Automotive applications include infotainment, instrument clusters, power trains, safety systems, and battery charging. Industrial applications are industrial automation, communication, instrumentation, laboratory and medical devices. Consumer applications that can utilize the TPS54335ADDA include LED lighting, portable devices, indoor air quality, home automation, and smart home applications.

The TPS54335ADDA offers both voltage-mode and current-mode control. In voltage-mode control, the output voltage is regulated by controlling the duty cycle of the internal switches. The voltage-mode control loop contains two 0.405Ω internal NMOSFETS, one PMOSFET, voltage feedback circuitry, and a fully-integrated high-voltage loop compensation device. The PMOSFET drives the internal 0.405Ω NMOSFETs, allowing wide voltage regulation ranges and accurate current sensing. This structure ensures robust operation and repeatable accuracy.

In current-mode control, the output current is regulated by controlling the duty cycle of the internal switches. The current-mode control loop contains two 0.405Ω NMOSFETS, one PMOSFET, current feedback circuitry, and a fully-integrated high-current loop compensation device. The current-mode control loop is designed for fast transient response and high stability. The current-mode control loop also provides adjustable constant current fold back for overload protection.

The TPS54335ADDA also offers soft start, which can be independently enabled or disabled for both channels. The soft start feature is controlled by an internal voltage ramp that gradually increases the output voltage while reducing output current. This feature helps reduce inrush peak current during startup and provides smooth start-up in applications with high capacitive load.

The TPS54335ADDA regulator also features PREEC protection, which provides programmable current limit and instantaneous overload protection. The PREEC protection is programmable via an external resistor. It limits the output current during short circuits and overloads, preventing the output voltage from dropping below the nominal voltage. This feature is useful in applications that require high current handling capability.

In addition to its voltage and current-mode control, the TPS54335ADDA also offers several protection features. These include over-current protection, over-voltage protection, and short-circuit protection. The protection circuitry is designed to protect the chip from any damage caused by over-current, over-voltage, or a short-circuit. This ensures that the device will be able to safely operate for its intended life.

The TPS54335ADDA is an excellent choice for a wide range of applications including automotive, industrial, and consumer applications thanks to its wide input and output voltage range, true synchronous buck regulator operation, integrated current-sensing and fold-back features, and high-efficiency operation.

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