A Wide Input DC-DC Power Chip Suitable for Robot System

Power supply is the most basic guarantee for intelligent robots to complete complex instructions. In-depth research on power management technology has also accelerated the upgrading of robots. This paper designs a wide-input DC-DC power chip suitable for robot systems. To achieve the wide input of the chip, this article presents an improved LDO structure, which solves the problem that the traditional LDO structure cannot start normally under low voltage. In addition, this paper presents a new type of bootstrap capacitor charge and discharge control circuit, which solves the problem that the charging and discharging can't be completed quickly due to the low drop-out with traditional structure. Finally, in order to convert the unknown frequency information into a processable electrical signal, this paper presents a frequency conversion circuit that successfully converts the frequency information into a corresponding electrical signal. Through simulation verification, the power chip designed in this paper can work normally under a wide input voltage range of 1.6V-6.3V.