Amplifier system with DC-component control

Details Amplifier system with DC-component control Amplifier system with DC-component control

2006-04-12

2011-10-11

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S280000, C330S297000

Reexamination Certificate

active

08035362

ABSTRACT:
A power supply system comprises a parallel arrangement of a linear amplifier (LA) and a DC-DC converter (CO). An output of the linear amplifier (LA) is directly coupled to a load (LO) for supplying a first current (II) to the load (LO). The DC-DC converter (CO) has a converter output coupled to the load (LO) for supplying a second current (12) to the load (LO). The linear amplifier (LA) comprises a first amplifier stage (OS1) to supply the first current (II), and the second amplifier stage (OS2) to generate a third current (13) being proportional to the first current (II). The first amplifier stage (OS1) and the second amplifier stage (OS2) have matched components. The DC-DC converter (CO) further comprises a controller (CON) having a control input for receiving a voltage generated by the third current (13) to control the second current (12) for minimizing a DC-component of the first current (II).

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