| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply apparatus capable of reducing overshoot/undershoot that occurs during power voltage switching operation, and increasing a voltage switching speed to a higher level, and to provide a power supplying method. SOLUTION: A power supply apparatus 100 supplies DAC value DD1 of a register 202 for DCDC, serving as a register for a switching regulator 400 to DAC 302 for LDO, in place of DAC value LD01 of a register 201 for LDO serving as a register for a series regulator 300, and a DAC 302 for LDO of the series regulator 300 performs DAC operation while referring to DAC value DD1 of the register 202 for DCDC, in a transient state in which the output voltage is being increased. COPYRIGHT: (C)2008,JPO&INPIT
|
