STMicroelectronics Manuals

The TSM101 is a voltage and current controller providing a more integrated solution in Switching Mode Power Supply application versus common standard ICs solution, with more functions widely used in power control in a single IC. This application note shows three basic configurations of the IC, to be used in the secondary side of any SMPS. Functions described are precise secondary voltage regulation, current limiting with foldback function, window detector with output feedback to opto-coupler or power good signal to CPU.

TSM101 is a linear battery charger for nickel-cadmium batteries. It can charge at 200mA or 60mA, depending on whether the charge control input is open or grounded.

L296 is a power switching regulator that can power microprocessors. The output voltage is 5.1V to 40V and the current is 4A

This is an application note about boost circuit optimization parameters, which introduces the optimization parameters of boost circuit, including the value of input capacitor Ci, the current ripple in the boost inductor Lb, the parasitic capacitances of the boost inductor and power semiconductors, the operating frequency and also the frequency modulation technique.

This is an application note that details how to use the L4981A/B controller to build a 1500W 440V power factor correction preregulator. The application note covers the circuit design, component selection, and layout.

Describes the design of a high power factor switching preregulator

This application note introduces the low-cost UC3842 current-mode controller. UC3842 can achieve high performance and low cost.

L296 and L4960 high power switching regulators can be used to realize multiple output power supplies. This note describes several practical circuits of this type.

This paper introduces the working principle and design method of PFC circuit in detail, and analyzes and discusses the input filtering problem of PFC circuit.

This document introduces the development of high-efficiency circuits using switched mode techniques, which offer space saving and cost reduction, particularly in the heatsink and output LC filter. A new technology called MULTIPOWER-BCD has been developed for these applications, allowing the integration of isolated power DMOS elements, bipolar transistors, and CMOS logic on the same chip. This technology is especially suitable for switch mode applications due to its high efficiency, fast switching speed, and no secondary breakdown of the power DMOS element. With MULTIPOWER-BCD, the L497X family has been implemented, which is a new series of fully integrated switching regulators suitable for DC-DC converters operating in Buck configuration. The family consists of five devices with different output current values (2A, 3.5A, 5A, 7A, 10A). The devices rated at 2A and 3.5A are assembled in Power Dip (16+2+2) package, while the others are assembled in the Multiwatt15 package. Each device integrates a DMOS output power stage, a control section, limiting current, and supervisor functions such as reset and power fail signal for microprocessor applications. The output voltage can be adjusted starting from the internal reference voltage.

This application note introduces L497XA series of high current switching regulator ICs, which exploit Multipower-BCD technology to achieve very high output currents with low power dissipation

The USBLC6-4SC6 is a monolithic Application Specific Discrete dedicated to ESD protection of high speed interfaces, such as USB2.0, Ethernet links and Video lines. Its very low line capacitance secures a high level of signal integrity without compromising in protecting sensitive chips against the most stringent characterized ESD strikes.