This invention discloses both a device and method for optimizing a snubber resistor value to enable nearly constant rate of change of discharge current in an inductor discharging circuit.Lawrence A. Leske
A switching regulator for converting input voltage to output voltage includes a switch; an inductor energized by input voltage by the switch; a rectifier for discharging the inductor; and a slope voltage generator for generating slope voltage inclined responsive to current of the inductor, amplifies ...
Inductor current variation (charging period) Equation 1 ΔI _ ton = ⎡ Vin ⎢⎣ − VLed ⎤ L ⎥⎦ ∗ ton Inductor current variation (discharging period) Equation 2 ΔI _ toff = ⎡ ⎢⎣ VLed L ⎤ ⎥⎦ ∗ toff The circuit works in continuous conduc...
A buck converter having a synchronous rectifier topology that performs current sensing at the low-side switch and employs valley current control to terminate a discharging phase and commence a charging phase of the converter. The buck converter is able to withstand high operating frequencies and low...
In order to solve the shortcoming, the theoretical basis for selecting the current ripple ratio of Buck converter is analyzed deeply and an optimal design method of the output inductor is proposed in this paper. The overall stresses of the converter, the size of the filter inductor and dynamic...
8.4B is that we are seeking an instantaneous increase in the energy stored in the inductor from its initial value of zero, which is clearly impossible. It turns out that if we want to avoid the transient, we must make the jump without requiring a change in the stored energy, which in ...
A n asynchronous step-d own DC-DC voltage regulator is illustrated in Fig . 1. The power stage contains one switching element that is the p-type power MOS FET, a unid irectional device formed b y a diode, and an output filter that is composed of an inductor L and a capacitor C ...
CONSTITUTION:When the supply of an input voltage Vin is stopped at time T0, the capacitor 5 begins to be discharged and its discharging current is supplied as an input to a voltage control circuit 1 to generate an output voltage. If the output voltage Vout reaches the detection level VB of...
A system and method are provided for regulating a voltage level at a load. The method configures a current control mechanism to generate a current through a first inductor and a sec
A light emitting diode (LED) lighting system and method are disclosed. The LED lighting system and method include an LED controller to accurately control a current in an LED system.