Regulator with high speed nonlinear compensation
Granted: April 4, 2023
Patent Number:
11621574
An apparatus including a proportional gain circuit, an integral gain circuit, a limit circuit, a gain booster circuit and a combiner. The gain circuits apply a proportional gain and an integral gain to an error signal, and the combiner combines both gained error signals to provide a control signal. The limit circuit applies a limit function that limits the proportional gain to a magnitude. The gain booster circuit increases gain while the limit function is being applied. The increased…
Regulator with high speed nonlinear compensation
Granted: April 4, 2023
Patent Number:
11621574
An apparatus including a proportional gain circuit, an integral gain circuit, a limit circuit, a gain booster circuit and a combiner. The gain circuits apply a proportional gain and an integral gain to an error signal, and the combiner combines both gained error signals to provide a control signal. The limit circuit applies a limit function that limits the proportional gain to a magnitude. The gain booster circuit increases gain while the limit function is being applied. The increased…
Voltage converters and methods for use therewith
Granted: February 22, 2022
Patent Number:
11258271
A voltage error signal is provided to a PWM controller of a voltage regular and used to produce a PWM signal that drives a power stage of the regulator. When operating in an adapter current limit regulation mode, an adapter current sense voltage, indicative of an adapter current, is compared to an adapter current reference voltage to produce an adapter current error signal. A compensator receives the adapter current error signal and outputs a compensated adapter current error signal. The…
Apparatuses and methods for encapsulated devices
Granted: October 19, 2021
Patent Number:
11150710
One embodiment is directed towards an encapsulated device. The encapsulated device includes a device, and a first encapsulation covering the device. The first encapsulation has one or more exterior surfaces. One or more recesses in one or more of the exterior surfaces is configured to receive a second encapsulation.
Method and apparatus for reverse over current protection
Granted: August 31, 2021
Patent Number:
11108226
The present embodiments relate to methods and apparatuses for providing fault protection in a power controller such as a voltage regulator, and particularly protection against reverse over current fault conditions. Some embodiments are capable of distinguishing between different types of reverse over current conditions, such as a high-side short or a normal over voltage condition. In these and other embodiments, fault protection is performed in favor of a load connected to the voltage…
Multiple chargers configuration in one system
Granted: August 10, 2021
Patent Number:
11088549
An electronic system, a multiple charger configuration, and method of operating a multiple input, multiple charger configuration are disclosed. For example, a multiple charger configuration is disclosed, which includes a first battery charger circuit configured to receive to a first input voltage, and a second battery charger circuit configured to receive a second input voltage. A first switching transistor is coupled to an output of the first battery charger circuit, a system voltage…
Coupled-inductor power-supply controller for operating a power supply in a reduced-power-dissipation mode
Granted: June 29, 2021
Patent Number:
11050349
An embodiment of a power-supply controller includes first and second circuits. The first circuit is operable to cause a first current to flow through a first phase of a power supply. And the second circuit is operable to cause the second phase of the power supply to operate in a reduced-power-dissipation mode for at least a portion of a time period during which a second current magnetically induced by the first current flows through the second phase.
Enhanced switched capacitor filter (SCF) compensation in DC-DC converters
Granted: February 23, 2021
Patent Number:
10931194
A system, DC-DC converter, and compensation method and circuit for a DC-DC converter are disclosed. For example, a compensation circuit for a DC-DC converter is disclosed. The compensation circuit includes an integrator circuit configured to receive and integrate a first voltage signal, a differential difference amplifier circuit coupled to the integrator circuit and configured to generate a first filter transfer function associated with the integrated first voltage signal, and a…
Buck-boost converter power supply with drive circuit
Granted: October 20, 2020
Patent Number:
10811972
In an embodiment, a power supply includes first and second supply input nodes, a supply output node, first and second switch circuits, a filter circuit, and a drive circuit. The first and second supply input nodes are respectively configured to receive first and second input voltages, and the supply output node is configured to provide an output voltage. The first switch circuit has a first conduction node coupled to the first supply input node, a second conduction node, and a control…
Hysteretic current mode buck-boost control architecture having sequential switching states
Granted: October 13, 2020
Patent Number:
10804801
A hysteretic current mode buck-boost voltage regulator including a buck-boost voltage converter, a switching controller, a window circuit, a ramp circuit, and a timing circuit. The timing circuit may be additional ramp circuits. The voltage converter is toggled between first and second switching states during a boost mode, is toggled between third and fourth switching states during a buck mode, and is sequentially cycled through each switching state during a buck-boost mode. The ramp…
Battery charge system with transition control that protects adapter components when transitioning from battery mode to adapter mode
Granted: October 6, 2020
Patent Number:
10797490
A battery charge system including an adapter node, a system node, a battery, a first isolation switch coupled between the adapter and system nodes, a second isolation switch coupled between the battery and system nodes, a boost converter, and a controller. The controller turns off the first isolation switch and turns on the second isolation switch during a battery mode, activates the boost converter when an adapter voltage is detected, turns off the second isolation switch when the…
Precision estimation for optical proximity detectors
Granted: October 6, 2020
Patent Number:
10795005
An optical proximity detector includes a driver, light detector, analog front-end and digital back end. The driver drives the light source to emit light. The light detector produces a light detection signal indicative of a magnitude and a phase of a portion of the emitted light that reflects off an object and is incident on the light detector. The analog front-end includes amplification circuitry, and one or more analog-to-digital converters (ADCs) that output a digital light detection…
Systems and methods for an open wire scan
Granted: September 22, 2020
Patent Number:
10782355
Systems and methods for an open wire scan are provided. In certain embodiments, An apparatus comprising a circuit includes a plurality of inputs for connecting with a plurality of outputs of a multi-cell battery pack; and an open connection detection circuit, formed within the circuit, for detecting an open connection on at least one of the plurality of inputs connected to the multi-cell battery pack and generating a fault condition responsive thereto. The open connection detection…
Method and system for reducing transients in DC-DC converters
Granted: September 8, 2020
Patent Number:
10768678
One embodiment pertains to a method including determining the duty cycle of a PWM signal, operating in valley current control mode when the duty cycle is greater than fifty percent, operating in peak current control mode when the duty cycle is less than fifty percent, and including, commencing a PWM pulse upon the occurrence of a pulse of a first clock signal pulse, and terminating the PWM pulse upon a level of a signal exceeding a positive window threshold.
System and method for maintaining a constant output voltage ripple in a buck converter in discontinuous conduction mode
Granted: July 28, 2020
Patent Number:
10727744
The system and method creates a substantially constant output voltage ripple in a buck converter in discontinuous conduction mode by varying the on-time of a pulse width modulator (PWM) signal driving the buck converter when the buck converter is operating in discontinuous conduction mode. A first signal is generated that is a function of the switching frequency of the buck converter. This signal is low-pass filtered and compared with a second signal that is a function of the switching…
Method and system controlling DC-DC voltage converters using tracking signal
Granted: June 30, 2020
Patent Number:
10700606
On embodiment pertains to an apparatus including a control loop configured to receive an output voltage sense signal. The control loop includes a compensator; a PWM signal generator coupled to an output of the compensator; a reference circuit configured to receive a tracking signal, and which is configured to low bandwidth low pass filter the tracking signal when the tracking signal amplitude becomes substantially constant and representative of an output voltage that is substantially…
Enhanced electrostatic discharge (ESD) clamp
Granted: June 9, 2020
Patent Number:
10680435
An enhanced ESD clamp is provided with a resistor connected between the body terminal and the source terminal of a MOSFET device. In one exemplary embodiment, the MOSFET device is a grounded-gate NMOS (ggNMOS) transistor device with the resistor (“body resistor”) connected externally to the MOSFET device. In another embodiment, the MOSFET device is a ggPMOS transistor device. In yet another embodiment, the body resistor is disposed within and connected internally to the MOSFET…
Body contact layouts for semiconductor structures
Granted: May 26, 2020
Patent Number:
10665676
Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the…
Method of making a stacked inductor-electronic package
Granted: May 5, 2020
Patent Number:
10643959
An embodiment of a circuit includes a circuit module and an inductor disposed over and electrically coupled to the module. Disposing the inductor over the module may reduce the area occupied by the circuit as compared to a circuit where the inductor is disposed adjacent to the module, or to a circuit where the inductor is disposed in the module adjacent to other components of the module. Furthermore, disposing the inductor outside of the module may allow one to install or replace the…
Regulator with high speed nonlinear compensation
Granted: April 28, 2020
Patent Number:
10637266
An apparatus including a proportional gain circuit, an integral gain circuit, a limit circuit, a gain booster circuit and a combiner. The gain circuits apply a proportional gain and an integral gain to an error signal, and the combiner combines both gained error signals to provide a control signal. The limit circuit applies a limit function that limits the proportional gain to a magnitude. The gain booster circuit increases gain while the limit function is being applied. The increased…
