Low-voltage switches in high voltage digital envelope tracking

An electronic device, comprising:

• a digital envelope tracking system, comprising:
• a generator;
• and
• a modulator;
• and
• a processor operably coupled to the digital envelope tracking system, configured to cause the electronic device to:
• set the generator and the modulator to a low voltage;
• sense a high input voltage, a low input voltage, a first voltage having a first voltage level, and a second voltage having a second voltage level less than the first voltage level using one or more voltage sensors;
• during a power up phase, determine if the low input voltage may be connected to the digital envelope tracking system;
• upon determining that the low input voltage may be connected to the digital envelope tracking system, generate the second voltage using the low input voltage and a first switch;
• determine if the high input voltage may be connected to the digital envelope tracking system to generate the first voltage;
• and
• upon determining that the high input voltage may be connected to the digital envelope tracking system to generate the first voltage, initiate a digital envelope tracking process.

A non-transitory computer-readable medium comprising program code, that when executed by at least one processor of an electronic device, causes the electronic device to:

• set a generator and a modulator of a digital envelope tracking system to a low voltage;
• sense a high input voltage, a low input voltage, a first voltage having a first voltage level, and a second voltage having a second voltage level less than the first voltage level using one or more voltage sensors;
• during a power up phase, determine if the low input voltage may be connected to the digital envelope tracking system;
• upon determining that the low input voltage may be connected to the digital envelope tracking system, generate the second voltage using the low input voltage and a first switch;
• determine if the high input voltage may be connected to the digital envelope tracking system to generate the first voltage;
• and
• upon determining that the high input voltage may be connected to the digital envelope tracking system to generate the first voltage, initiate a digital envelope tracking process.