| 摘要 |
PROBLEM TO BE SOLVED: To correct an output drop due to cable impedance.SOLUTION: A power supply unit 1 includes output voltage generation sections (11-15, L1, D1, C1, C2) that generate an output voltage Vo1 from an input voltage Vi so that an error signal Verr is low; feedback voltage generation sections (R1, R2) that generate a feedback voltage Vfb corresponding to the output voltage Vo1; an error signal generation section 16 that generates an error signal Verr corresponding to a difference between the feedback voltage Vfb and a reference voltage Vref; a current detection section 18 that detects an output current Io1 output from the output voltage generation section; and an adjustment section (an output voltage adjustment section 19A in Figure 1) that performs output adjustment so that the output voltage Vo1 becomes higher as the output current Io1 is higher. |
