电源管理IC开发工具 LM22670 EVAL BOARD
The evaluation board is designed to demonstrate the capabilities of the LM22670 switching regulator. The LM22670 evaluation board is configured to provide an output voltage of 3.3V up to 3A load. Due to the low RDSON of the integrated N-channel MOSFET and maximum duty cycle limitations, the minimum input voltage of 4.5V will only provide a 3.3V output voltage for load currents up to 500mA. For load currents higher than 500mA, an input voltage of 5.5V or higher is required. The typical operating frequency is 500kHz. The evaluation board is designed to operate at ambient temperatures up to 50°C. At low input voltages between 4.5V and 6V, a minimum load of approximately 5mA may be required to reach a regulated 3.3V output voltage. To aid in the design and evaluation of DC to DC buck converter solutions based on the LM22670 switching regulator, the evaluation board can be reconfigured for different output voltages.