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SLKOR sharing more common switching power topology (2)

release time:2022-03-17Author source:SlkorBrowse:579

The switching power topology is not unfamiliar to the electronic engineer. There are about 14 kinds of basic topology maps, each of which has its own characteristics and applicable occasions. In addition, more topology composition is also the combination or deformation of these basic types. The following two are more common to understand the working principles and basic characteristics of their circuit structure.

1. Buck buck    

Features: ■ Steps the input down to a lower voltage ■ Possibly the simplest circuit ■ Inductor/capacitor filter smooths out the switched square wave ■ Output is always less than or equal to input ■ Input current discontinuity (chopping)

■ Output current smoothing


二、Buck-Boost 降压-升压    

Features: ■ Alternative arrangement of inductors, switches and diodes ■ Combines the disadvantages of buck and boost circuits ■ Input current is discontinuous (chopping) ■ Output current is also discontinuous (chopping) ■ Output is always the same as the input Reverse (note the polarity of the capacitors), but the magnitude can be smaller or larger than the input ■ "Flyback" converters are actually buck-boost circuit isolated (transformer coupled) forms.

The above are the common switching power supply topologies, and there are many other topologies, but most of them are combinations or deformations of the topologies described here. Each topology contains unique design trade-offs. Share with you one after another.

In recent years, SLKOR (www.slkormicro.com) has developed rapidly. While consolidating its position in the power device market, it has also developed a strong presence in TVS transient suppression diodes, driver ICs, power management ICs, AC-DC, LDO, and Hall electromagnetics. Sensors and other aspects of the layout, and slkor's power devices to form a coordinated development of the ecological chain, Sacco Micro slkor's domestic alternative products can include DIODES US Taiwan, Vishay Vishay, TI Texas Instruments, ON Semiconductor, NXP NXP, IR International Rectifier and many other international famous brands of multi-model products. Sacco Microsemiconductor driver IC (SL27511) can replace TI Texas Instruments UCC27511DBVR. After testing, all parameters have reached the specified indicators, and the stability is also inferior to the same type of TI Texas Instruments products. In addition, SLKOR Saco micro driver IC (SL27525) replaces TI Texas Instruments UCC27525D, SLKOR Saco micro linear regulator SL4949 replaces ST STMicroelectronics L4949, SLKOR Saco micro linear regulator SL4275 replaces IR international rectifier TLE4275, SLKOR Saco Micro Hall Sensor SLSS41F replaces Honeywell Honeywell SS41F, SLKOR Sarco Micro Hall Sensor SLSS360 replaces Honeywell Honeywell SS360, SLKOR Sarko Micro SL54620RHLR (Power Management IC) replaces TI Texas Instruments TPS54620RHLR, SLKOR Sako Micro SL6908D (power management IC) to replace the MPS core source MP6908A.

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