Control circuit of current mode DC-DC converter and control...

Details Control circuit of current mode DC-DC converter and control... Control circuit of current mode DC-DC converter and control...

2007-11-08

2010-06-08

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S224000

Reexamination Certificate

active

07733074

ABSTRACT:
To provide a control circuit of a current mode DC-DC converter, a current mode DC-DC converter and a control method thereof having excellent high-speed responsiveness with respect to fluctuations in output voltage. The control circuit of the current mode DC-DC converter serves as a DC-DC converter1that controls a peak value of a coil current and comprises a window comparator that detects whether an output voltage VOUT is within a predetermined voltage range including a target voltage, and a peak current setting unit that sets a peak current setting value of a coil current to a lower limit value or an upper limit value in response to a high or low voltage level of the output voltage VOUT, in the case that the output voltage VOUT is not within the predetermined voltage range including the target voltage.

REFERENCES:
patent: 7242170 (2007-07-01), Natsume
patent: 7378826 (2008-05-01), Liao
patent: 7456623 (2008-11-01), Hasegawa et al.
patent: 2005-086992 (2005-03-01), None
patent: 2005-287165 (2005-10-01), None

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