Charge Regulation Assembly And Method For Charging A Battery
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Abstract
A charging regulator arrangement (30) and a method for charging a battery (13) are specified. Current elements (11, 12) are produced by a DC/DC converter (14) and a series regulator (24). A control unit (15) controls the DC/DC converter (14) and the series regulator (24) as a function of the actual charging current (I) of the battery. The power losses can be reduced when the chip area is reduced, and this makes it possible to lengthen the life of the battery (13) to be charged. The disclosed technique is suitable, for example, for use in mobile radios.
27 Citations
45 Claims
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1-23. -23. (canceled)
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24. A charging regulator arrangement, comprising:
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an input for connection to a voltage source; an output designed for producing a battery charging current; a DC/DC converter with an input which is connected to the input of the charging regulator arrangement, with an output which is connected to the output of the charging regulator arrangement, and with a control input; a control unit with an input for supplying a signal which is dependent on the battery charging current, and with an output which is connected to the control input of the DC/DC converter; and a series regulator which is connected between the input and the output of the charging regulator arrangement and has a control input which is connected to a further output of the control unit; wherein the series regulator comprises an MOS transistor having a controlled path that is connected between the input and the output of the series regulator and a control connection that forms the control input of the series regulator. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method for charging a battery, comprising the steps of:
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producing a first charging current component for charging the battery by means of a DC/DC converter; producing a second charging current component for charging the battery by means of a series regulator; linking the first and the second charging current components to form a battery charging current; and controlling the first charging current component and the second charging current component as a function of the battery charging current. - View Dependent Claims (42, 43, 44, 45)
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Specification