Simple, efficient, flexible 1A buck converter powers low-voltage loads in smart meters, home appliances and industrial converters

簡單、高效、靈活的1A降壓轉(zhuǎn)換器為智能電表、家用電器和工業(yè)轉(zhuǎn)換器中的低壓負(fù)載供電

ST’s DCP3601 miniature monolithic buck converter combines extensive feature integration and flexibility, enabling simple, low-BOM designs to achieve high conversion efficiency. The power switches and compensation are built-in, requiring only six components to complete the circuit, including the inductor, bootstrap and filter capacitors, and feedback resistors for setting the output voltage.

意法半導(dǎo)體的DCP3601微型單片降壓轉(zhuǎn)換器結(jié)合了廣泛的功能集成性和靈活性，實(shí)現(xiàn)了簡單、低材料成本的設(shè)計(jì)，以實(shí)現(xiàn)高轉(zhuǎn)換效率。其內(nèi)置電源開關(guān)和補(bǔ)償，只需六個(gè)組件即可完成電路，包括電感器、自舉和濾波電容器，以及用于設(shè)置輸出電壓的反饋電阻器。

With its 3.3V-to-36V input voltage range and 1A output capability, the DCP3601 can power low-voltage loads in applications such as smart meters, domestic appliances, and industrial 24V conversion. Synchronous rectification and a fixed switching frequency of 1MHz ensure high efficiency across the load range and under all operating conditions, reaching 91% at 600mA with 12V input and 5V output.

憑借其3.3V至36V的輸入電壓范圍和1A的輸出能力，DCP3601可為智能電表、家用電器和工業(yè)24V轉(zhuǎn)換等應(yīng)用中的低壓負(fù)載供電。同步整流和1MHz的固定開關(guān)頻率確保了在負(fù)載范圍內(nèi)和所有操作條件下的高效率，在12V輸入和5V輸出的600mA條件下達(dá)到91%。

Flexibility comes from the selection of different variants, offering the choice of forced-PWM operation for noise-sensitive applications or pulse-skipping at light load for minimal power consumption. Additionally, both the low-noise and low-consumption variants are available with frequency dithering to reduce noise power at the 1MHz switching frequency. All variants have extremely low quiescent current of 110μA and an Enable pin that allows turning off the converter with a dedicated signal to maximize power savings.

其豐富的變體保證了靈活性，可為噪聲敏感應(yīng)用提供強(qiáng)制PWM操作，或在輕載下跳過脈沖以實(shí)現(xiàn)低功耗。此外，低噪聲和低功耗變體均可通過頻率抖動(dòng)來降低1MHz開關(guān)頻率下的噪聲功率。所有變體均具有110μA的極低靜態(tài)電流和使能引腳，以便通過專用信號(hào)關(guān)閉轉(zhuǎn)換器，從而有效節(jié)省功耗。

Designers can quickly start new projects with the DCP3601 using the dedicated evaluation board, STEVAL-3601CV1. The board comes with screw terminals and headers and is ready to power-up out of the box, demonstrating an efficient circuit design with a compact footprint.

設(shè)計(jì)者可借助專用評(píng)估板STEVAL-3601CV1，利用DCP3601來快速啟動(dòng)新項(xiàng)目。該板配有螺絲端子和接頭，開箱即用，具備高效的電路設(shè)計(jì)和緊湊的外形尺寸。

First in the new buck-converter product family that will expand throughout the year, the DCP3601 is included in ST’s 10-year longevity program that ensures long-term access to components and support. Packaged as a 3mm x 1.6mm SOT23 6-lead device, the single-chip buck converter is priced from $0.48 for orders of 1000 pieces.

對(duì)于全年擴(kuò)展的新型降壓轉(zhuǎn)換器產(chǎn)品系列，DCP3601是該系列的首款產(chǎn)品。為確保用戶能夠長期獲得組件和支持，該產(chǎn)品已被納入意法半導(dǎo)體的10年長期供貨計(jì)劃。單芯片降壓轉(zhuǎn)換器采用3mm x 1.6mm SOT23 6引腳封裝；千片起訂單價(jià)0.48美元。