US 9,812,948 B2
Dynamic brown-out threshold voltage for power control
Per Torstein Roine, Oslo (NO); Stefan Dannenberger, Langhus (NO); and Danielle Griffith, Richardson, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Mar. 23, 2015, as Appl. No. 14/665,843.
Prior Publication US 2016/0285438 A1, Sep. 29, 2016
Int. Cl. H02M 1/36 (2007.01); H03K 17/22 (2006.01); G05F 1/46 (2006.01); G05F 1/10 (2006.01)
CPC H02M 1/36 (2013.01) [H03K 17/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A circuit, comprising:
a plurality of series-connected elements coupled to receive an input voltage and produce a plurality of rising sample voltages and a falling sample voltage, each sample voltage having a magnitude less than a magnitude of the input voltage;
a plurality of switching devices arranged to select at least one of the rising sample voltages;
a counter arranged to provide a signal to control the plurality of switching devices;
a comparator circuit arranged to produce an output signal in response to an input signal and a reference voltage; and
a logic circuit arranged to produce the input signal from one of said at least one of the rising sample voltages and the falling sample voltage in response to the output signal.