L6910GTR

The L6910GTR is a high-performance DC-DC switching controller specifically designed for high switching frequency power supplies. It operates in step-down, step-up and inverting configurations, and is available in PQFN and \'Bump-on-Board\' packages. It integrates a voltage regulator, an adaptive pre-biased output drive, and a wide range of protection and control features. This makes it an ideal choice for applications requiring the synchronization and safe operation of high-frequency DC-DC switching power supplies.The application field of L6910GTR includes:

• Communication Systems
• Data Storage Systems
• Computer Servers
• Wireless Platforms
• Network Routers and Switches
• Medical Monitoring Equipment
• Telecommunication Infrastructure
• Power Supplies
• Power Distribution Units

The working principle of L6910GTR is based on the comparison between Main Regulating Voltage (MRV) and Feedback Reference Voltage (FRV) as well as the logic of digital PWM signals. The MRV is generated by the internal reference voltage circuit, while the FRV is determined by the output voltage feedback circuit.The voltage regulation and switching operation of the L6910GTR are based on two core processes: the primary regulation loop and the control logic. The primary regulation loop is composed of a Voltage Divider, Comparator and Power MOSFET Transistor. The Voltage Divider senses the output voltage and divides it down to produce the FRV. The FRV is then compared to the MRV in the Comparator, which also has an input for a PWM signal from the control logic. The result of the comparison is then used to control the Power MOSFET Transistor.The control logic is composed of two integrated digital logic blocks, the PWM and OCP logic. The PWM logic digitalizes the output of the Comparator, controlling the output voltage by switching the MOSFET transistor power supply on and off. The Open-Loop Control (OCP) logic block monitors the current in the voltage drive, detecting any faults that could potentially cause the MOSFET transistor to overheat or become saturated. The PWM and OCP logic blocks also facilitate the synchronization of multiple L6910GTRs, allowing them to be used together to create multiple channel power supplies.The protection and control features of the L6910GTR are designed to ensure the safe operation of the voltage drive. These features include current limit protection, short-circuit protection, over-voltage and under-voltage protection, over-temperature protection and a power-on reset circuit.The L6910GTR features an adaptive pre-biased output drive, allowing it to be used in step-down, step-up and inverted configurations. This makes it suitable for a wide range of applications and makes it a versatile switching controller for power supplies.In conclusion, the L6910GTR is an ideal solution for applications that require the synchronization and safe operation of high-frequency DC-DC switching power supplies. It offers a wide range of protection and control features, and can be used in step-down, step-up and inverted configurations.

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