Patent
Coordinated power sequencing to limit inrush currents and ensure optimum filtering
Reads0
Chats0
TLDR
In this article, a power sequencing circuit is proposed to generate a regulated voltage signal from an unregulated voltage signal, which is then coupled to a power limiting circuit and a trigger circuit.Abstract:
A regulated power supply apparatus and method is provided. A converter circuit is configured to generate a regulated voltage signal from an unregulated voltage signal. A power sequencing circuit includes an unregulated voltage source input terminal and is configured for coupling an unregulated voltage signal to an unregulated voltage signal input terminal of the converter circuit. The power sequencing circuit includes an enable output coupled to the enable signal input terminal and includes a power limiting circuit and a trigger circuit. The power limiting circuit includes a first cascade of discrete analog components as controls for a first switching element and the trigger circuit includes a second cascade of discrete analog components as controls for a second switching element. The first cascade is configured as a charge control circuit for controlling a rate of charge of a first filter network and includes a zener diode coupled in parallel. The second cascade is configured as a detector of voltage levels and generates the enable signal. The first and second switching elements are semiconductor switches. The first filter network is coupled upstream of the converter circuit and a second filter network is coupled downstream. In an exemplary embodiment, the converter circuit is a DC to DC bus converter circuit and the regulated power supply apparatus is a fan controller circuit.read more
Citations
More filters
Patent
Power management integrated circuit partitioning with dedicated primary side control winding
TL;DR: In this paper, a switched mode power converter has a feedback mechanism by which a coded train of pulses with well defined integrity is generated on the secondary side of the power converter and transmitted to a dedicated control signal winding on the primary side for decoding and application to regulate the power converters output.
Patent
Voltage regulation subsystem
TL;DR: In this article, an internal auxiliary voltage regulator is selectively enabled to overdrive the voltage, depending upon a comparison of bandgap references of the internal and external regulators used in the respective regulation modes, which boosts the supply voltage, enables circuitry supplied by the external regulator (with the assistance of auxiliary voltage regulators) to boot robustly in extreme Process-Voltage-Temperature (PVT) conditions.
Patent
Energy conversion architecture with secondary side control delivered across transformer element
TL;DR: In this paper, a switched mode power converter is configured having predominate secondary side control and a primary side driving circuit is configured as a responsive state machine, the output of which is input as the driving signal for a main switch.
Patent
Reconstruction pulse shape integrity in feedback control environment
TL;DR: In this paper, a closed loop feedback control mechanism is used to regulate an output characteristic and a resonant type circuit is modified from an optimal energy transfer configuration to one that dampens fluctuations in a feedback signal used by the closed-loop feedback mechanism.
Patent
Voltage regulation system for integrated circuit
TL;DR: In this paper, the authors propose a switching module that disconnects the low voltage regulator from the low power domain when the output voltage of the high voltage regulator is lower than a threshold voltage during power-up.
References
More filters
Patent
Universal power supply
TL;DR: In this paper, a power supply detects power requirements of an electrical device and configures itself to provide the correct power to the device by using a connector that isolates the device from its battery.
Patent
Inter-circuit encapsulated packaging
TL;DR: In this article, an encapsulated circuit assembly and a method for making encapsulated circuits are described, which consists of a first printed circuit board, a second printed circuit boards, and a heat transfer device.
Patent
Synchronous switching cascade connected offline PFC-PWM combination power converter controller
TL;DR: In this paper, a synchronous switching cascade connected power converter includes a first power factor correction converter stage and a second DC to DC converter stage for generating an output voltage in response to an input voltage and current.
Patent
Inverter apparatus connected to a plurality of direct current power sources and dispersed-power-source system having inverter apparatus linked to commercial power system to operate
TL;DR: In this paper, a plurality of converters (5A-5D) each receiving a direct current power from respective plurality of solar cell arrays (2A-2D) having different output voltage ranges, and an inverter (6) transforming the directcurrent power from the plurality of inverters into an alternating current power and allowing the alternating current to reversely flow into a commercial power system.
Patent
Switching power converter and method of controlling output voltage thereof using predictive sensing of magnetic flux
TL;DR: In this paper, a detection circuit detects the end of a half-cycle of post-conduction resonance that occurs in the power magnetic element subsequent to zero energy level in the magnetic element.