Envelope tracking power supply with direct connection to power source
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United States of America Patent
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May 31, 2016
Grant Date -
Jan 29, 2015
app pub date -
Sep 5, 2013
filing date -
Jul 29, 2013
priority date (Note) -
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Abstract
A communication device, such as a smart phone, includes an envelope tracking power supply. The envelope tracking power supply is configured for direct connection to a supply voltage. The direct connection may be made without connection through an intermediate voltage regulator, such as a low drop out regulator. The supply voltage may be a relatively high battery voltage, for example, that would normally result in greater than permissible voltage limits on the transistors used in conventional envelope tracking power supplies.
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