DC/DC converter to power spectral lamps

Objectives. The paper describes the creation of a DC/DC converter for powering hollow cathode lamps widely used currently as highly stable sources of spectral lines in spectral absorption analyzers and other applications. Typically, mains power supplies are used for such lamps, since installations using hollow cathode lamps are manufactured as stationary. However, there are no principal obstacles to manufacturing portable versions by simply substituting the power supply. However, special attention should in this case be paid to the power supply of the spectral lamp itself, since the amplitude stability of the radiation depends on the smoothness of its supply voltage. Therefore, the development of the pulse DC/DC converter with high efficiency and low rippling is a relevant and expedient problem.

Methods. The set task is solved by methods of mathematical calculations, circuit simulation in LTSpice XVII сomputer-aided design system, and experimental verification.

Results. The structural and principal electrical circuit of a prototype converter is developed on the basis of a topological analysis of pulse DC/DC converters, along with its calculations and simulation, and a printed circuit board. The developed autonomous high-voltage DC/DC converter has a low ripple level (~250 mV) of the output voltage (~491 V) at a load current of ~20 mA to ensure highly stable radiation.

Conclusions. The possibility of obtaining a high voltage when using the topology of a step-up DC/DC converter with a choke is demonstrated. The experimental verification confirmed the correctness of calculations and modeling of a high-voltage DC/DC converter for powering hollow cathode spectral lamps.

1. Moskalev B.I. Razryad s polym katodom (Discharge with Hollow Cathode). Moscow: Energiya; 1969. 184 p. (in Russ.).

2. Maksimov D.E., Rudnevskii N.K. Spektral’nyi analiz s primeneniem razryada v polom katode (Spectral Analysis Using Hollow Cathode Discharge). Gor’kii: GGU; 1979. 119 p. (in Russ.).

3. Maksimov D.E., Rudnevskii N.K., Rudnevskii A.N., Shabanova T.M. Spektral’nyi analiz s primeneniem razryada v polom katode (Spectral Analysis Using Hollow Cathode Discharge). Gor’kii: GGU; 1983. 71 p. (in Russ.).

4. Garmash A.V. Vvedenie v spektroskopicheskie metody analiza. Opticheskie metody analiza (Introduction to Spectroscopic Methods of Analysis. Optical Methods of Analysis). Moscow: RAN VKhK; 1995. 38 p. (in Russ.).

5. Bityukov B.K., Gorbunov R.A., Simachkov D.S., Frunze A.V. A Highly Stable Source of Spectral Lines. Opt. Spectrosc. 2019;126(4):450–453. https://doi.org/10.1134/S0030400X19040040 [Original Russian Text: Bityukov B.K., Gorbunov R.A., Simachkov D.S., Frunze A.V. A Highly Stable Source of Spectral Lines. Optika i spektroskopiya. 2019;126(4):528–532 (in Russ.). http://doi.org/10.21883/OS.2019.04.47525.50-18 ]

6. Kaganov V.I., Bityukov V.K. Osnovy radioelektroniki i svyazi (Fundamentals of Radioelectronics and Communications). Moscow: Goryachaya liniya –Telekom; 2012. 542 p. (in Russ.).

7. Skvortsov E.A., Simachkov D.S. High-stability radiation device based on hollow cathode lamps. In: Actual Problems and Perspectives for the Development of Radio Engineering and Infocommunication Systems (Radioinfocom 2021): Proceedings of the 5th International Scientific and Practical Conference. Moscow: RTU MIREA; 2021. P. 405–408 (in Russ.). Available from URL: https://www.elibrary.ru/aelqox

8. Bityukov V.K., Simachkov D.S., Babenko V.P. Istochniki vtorichnogo elektropitaniya (Secondary Power Sources). Moscow: Infra-Inzheneriya; 2020. 376 p. (in Russ.).

9. Babenko V.P., Bityukov V.K., Simachkov D.S. DC/DC Buck-Boost Converter with Single Inductance. Russ. Microelectron. 2021;50(6):471–480. https://doi.org/10.1134/S1063739721060044

10. Sergeev B.S. Skhemotekhnika funktsional’nykh uzlov istochnikov vtorichnogo elektropitaniya (Schematics of Functional Units of Secondary Power Sources. Reference-book). Moscow: Radio i svyaz’; 1992. 224 p. (in Russ.).

11. Meleshin V.I. Tranzistornaya preobrazovatel’naya tekhnika (Transistor Converter Technology). Moscow: Tekhnosfera; 2005. 632 p. (in Russ.).

12. Naivel’t G.S., Mazel’ K.B., Khusainov Ch.I., et al. Istochniki elektropitaniya radioelektronnoi apparatury (Power Supply Sources REA: reference-book). Naivelt G.S. (Ed.). Moscow: Radio i svyaz’; 1985. 576 p. (in Russ.).

13. Babenko V.P., Bityukov V.K. Gate charge measurement for high power MOSFET switches. In: Modern Problems of Vocational Education: Experience and Solutions. Materials of the Second All-Russian scientific-practical conference with international participation. 2017. Irkutsk: Irkutsk State Transport University; 2017. P. 37–41 (in Russ.).

14. Zaitsev A.A., Mirkin A.I., Mokryakov V.V. Poluprovodnikovye pribory. Tranzistory srednei i bol’shoi moshchnosti (Semiconductor Devices. Medium and High Power Transistors: Handbook). Golomedov A.V. (Ed.). Moscow: KUbK-a; 1995. 640 p. (in Russ.).

15. Novikov P. Gate resistor. Part 1. Silovaya elektronika = Power Electronics. 2018;6(75):4–8 (in Russ.).

16. Volodin V.Ya. LTspice: komp’yuternoe modelirovanie elektronnykh skhem (LTspice: Computer Simulation of Electronic Circuits). St. Petersburg: BKhV-Peterburg; 2010. 400 p. (in Russ.).

17. Barnes J.R. Electronic System Design: Interference and Noise Control Techniques. Transl. from Engl. Moscow: Mir; 1990. 238 p. (in Russ.). [Barnes J.R. Electronic System Design: Interference and Noise Control Techniques. New Jersey: Prentice Hall; 1987. 244 p.]