SU515101A1

SU515101A1 - Impulse voltage regulator

Info

Publication number: SU515101A1
Application number: SU2111945A
Authority: SU
Inventors: Лев Рафаилович Гутер; Вячеслав Николаевич Попов; Александр Васильевич Соловьев
Original assignee: Предприятие П/Я В-2672
Priority date: 1975-03-10
Filing date: 1975-03-10
Publication date: 1976-05-25

Description

1one

, Изобретение относитс к электротехнике: и предназначено дл использовани в соста-« ве устройств автоматики и вычислительной техникн. The invention relates to electrical engineering: and is intended for use in automation devices and computing techniques.

Известны импульсные стабилизаторы « пр жени , содержащие ключевой транзистор, сглаживающий фильтр, усилитель сигнала рассогласовани , тактовый генератор и моДул тсф длительности импульсов.Known pulse voltage regulators contain a key transistor, a smoothing filter, an error signal amplifier, a clock generator, and a pulse width modulus module.

Однако известные стабилизаторы имеют ю недостаточную стабильность выхоайого на- , пр жени при больших колебани х напр жени сети в случае относительно низких выходных ; напр жений и значительных токах нагрузки .,5However, the known stabilizers have insufficient stability of the voltage at high voltage fluctuations in the case of relatively low output; voltages and high load currents., 5

I Целью, изобретени вл етс повышенна сЧабильности выходного напр жени в шнроком диапазоне изменени входного напр же-; ни .I The purpose of the invention is to increase the output voltage stability in the auger range of input voltage; neither

Дл атого в выходную цепь мсоул тора длительности импульсов введена интегрирую ша НС-цепь, соединенна через резистор с Ежодом модул тора длительности импулы . сов..26For the latter, an integrate a NS-circuit connected via a resistor to the pulse duration modulator EJ is introduced into the output pulse-width output circuit. owl.26

Изобретение по снено Ч1вртежами. На фиг. 1 лртведена структурно принввпиальна алек рнческа схема стабнлнзатора; на фиг. 2 и 3 - временные диаграммы ..The invention is explained in detail. FIG. 1 triple structural scheme of the stabilization circuit; in fig. 2 and 3 - time diagrams ..

Импульсный стабилнзатор напр жени содержит ключевой транзистор 1, амвттер ко- торси о соединен с ||шльтром 2, а база транм зистора1 соединена с одннм из входов трипгера 3. Выход триггера 3 соединен с выходом компаратора 4, одни из входов которого соединен усилителем рассогласовани 5. Стабилизатор также , состо щую изI резистора ё, 7 и конденсатора 8The impulse voltage stabilizer contains a key transistor 1, the amter of the co-ordinator is connected to || Schlter 2, and the base of the transistor 1 is connected to one of the inputs of the trigger 3. The output of the trigger 3 is connected to the output of the comparator 4, one of the inputs of which is connected by the error amplifier 5 The stabilizer also consists of a resistor g, 7 and a capacitor 8

Стабилизатор работает следуюшом образом .The stabilizer works in the following way.

Пусть входное напр жение Up увеличива« етс , причем его прмрапе и равныLet the input voltage Up be increased ", and its output equal to

uUj AUg jSUUjjij(ОМ.ФМГ. 2) uUj AUg jSUUjjij (OM.FMG. 2)

Claims

Due to the latitude of the pulse modulator, with an increase in the amplitude of the pulses at the input of the filter 2, the duty cycle will vary by one (see FIG. 2). Since the output voltage is constant {its instability.math), the area of the impulse is kept constant, therefore the impact of DJ decreases inversely proportional to the increase U It is obvious that the increment of the output voltage AUouv corresponds to the inequality Ueb ,,: the movement of the saw with respect to the voltage level results in the same output. Reducing the output voltage instability with an increase in input voltage is equivalent to an increase in the stabilization factor or gain in the stabilizer circuit. If the critical value of the coefficient and during the growth .usileni input voltage - .. I is obtained in the working range varying duty cycle, the stabilizer having parasitic self oscillation. If the gain is low and allows for high values of CKBa HOCi-H with increasing U, then it turns out to be very low for small values of U. Comparison of voltages occurs in the comparator 4 "at the summing input of which receives a sawtooth voltage the error signal from the amplifier 5. At the moment of equality of the stresses, the comparator pulse transfers the trigger 3 to one of the states. Trigger 3 is triggered by a clock generator pulse (input 9 of trigger 3 is intended to be connected to a clock generator), which simultaneously switches on 1 sawtooth voltage generator. Using local feedback, which covers the pulse width modulator, uniform gain is achieved throughout the control range and the stability of the output voltage is improved. The output pulses of the modulator and the интегри are integrated by a circuit consisting of resistors 6, 7 and capacitor 8. Dependence of the voltage of the feedback circuit (1 is shown in FIG. 3 Foldable voltage, removed 1 m i from the output of amplifier 5, the voltage compensates for the instability of the output voltage. When the gain decreases below the critical range, the variation in the voltage can be expanded with a high stability of the output voltage, / Invention formula The voltage regulator containing connected to the key transistor to a smoothing filter, and in the control part there is a propagation signal amplifier connected between the output of the stabilizer and the source of the reference voltage connected to the pulse duration modulator on the control circuit, the control circuit of which is connected to the IK clock generator characterized in that, in order to increase the stability of the output voltage in a wide range of variation; the input voltage is introduced into the output circuit of the pulse width modulator, the integrating RC is pp, connected via resistor c. input modulator pulse duration.

41,

ill

I

u