Controller for DC-DC converter and method for controlling...

Details Controller for DC-DC converter and method for controlling... Controller for DC-DC converter and method for controlling...

2006-03-28

2009-10-27

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S274000

Reexamination Certificate

active

07609042

ABSTRACT:
A DC-DC converter that suppresses increase in area and obtains high conversion efficiency irrespective of the output current. A controller controls a first output transistor and a second output transistor in a PWM operation mode or a linear operation mode based on output voltage of the DC-DC converter. The controller operates the DC-DC converter as a switching regulator that activates and inactivates the first output transistor and the second output transistor in a complementary manner during the PWM operation mode. The controller operates the DC-DC converter as a linear regulator that inactivates the second output transistor and controls the ON-resistance value of the first output transistor to perform linear operation with the first output transistor during the linear operation mode.

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Chinese Office Action dated May 9, 2008, 29 pages.

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