EVB_RT8297BZQW

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EVB_RT8297BZQW is an evaluation board designed for the RT8297B High Performance Low Standby Power LLC Converter. It is part of the Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS range of products, and is used to evaluate the features and performance of the RT8297B converter.

The RT8297BZQW board is capable of generating an output voltage of 5 V up to 32 V, and supports a wide input voltage range of 4.5 V to 40 V. It offers a peak efficiency of 98% and a maximum output power of 115 W. This makes the EVB_RT8297BZQW suitable for applications such as computers, consumer electronics, telecom, and industrial control equipment, where low standby power consumption is essential.

The EVB_RT8297BZQW is designed with two enable inputs: EN and PWRCTL. EN is a logic input that can be used to turn on and off the output voltage of the board, while PWRCTL is used for gain control. Additionally, it has a voltage feedback pin for a regulated output voltage and a linear control pin to provide accurate current limit. The board also features a built-in soft-start controller, which helps protect the system from excessive in-rush current during startup. It also includes a high-efficiency OCP circuit to protect the system from overcurrent conditions.

The EVB_RT8297BZQW employs a LLC converter topology to provide high efficiency. Its voltage regulation is achieved using a primary side control technique, which eliminates the need for an optocoupler for feedback control. The board contains a oscillator and PWM controller IC, a primary side MOSFET for power switching, and a secondary side synchronous rectifier for improved efficiency.

The EVB_RT8297BZQW board is built with two independent power rails: an input rail capable of providing a maximum output power of 115 W, and an output rail for regulating the output voltage. In addition, it has the option to configure the output voltage with resistors and capacitors for flexible applications. With its wide input voltage range, high efficiency, low standby power consumption, and high output power capabilities, the EVB_RT8297BZQW is an ideal choice for applications requiring a wide variety of supply voltage levels.

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