A buck or step-down topology is used in DC-DC switching converters where the output voltage is lower than the input with or without input-output isolation.
We have a large offer of buck regulators - with integrated power switches – and controllers providing a wide range of features including soft start to minimize inrush current and power-good to enable power-up sequencing. Programmable devices are also available to help design buck converters fine-tuned for specific EMI, EMC, efficiency and power density targets and use cases.
We have also developed an isolated, single-stage direct 48 V to the Point-of-Load (PoL) resonant, conversion solution for use in CPUs or DDR memories compliant with Intel VR13 and VR12.5 specifications. ST also offers a fully scalable solution for up to 6 interleaved cells with dynamic cell shedding and pulse skipping features.
In addition, we have a comprehensive set of evaluation and development tools as well as reference designs to help compress time to market.
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| Part number | Description |
|---|---|
| A7985A | 2 A step-down switching regulator for automotive applications |
| A7986A | 3 A step-down switching regulator for automotive applications |
| L6985F | 38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current |
| L6986 | 38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current |
| L6986F | 38 V 1.5 A synchronous step-down switching regulator with 30 uA quiescent current |
| L7987 | 61 V 3 A asynchronous step-down switching regulator with adjustable current limitation |
| L7987L | 61 V 2 A asynchronous step-down switching regulator with adjustable current limitation |
| ST1S06 | Synchronous rectification with inhibit, 1.5 A, 1.5 MHz adjustable, step-down switching regulator |
| ST1S12XX | Synchronous rectification with inhibit, 0.7 A, 1.7 MHz adjustable, step-down switching regulator |
| ST1S14 | Up to 3 A step down switching regulator |
| ST1S31 | 3 A DC step-down switching regulator |
| ST1S40 | 3A DC step-down switching regulator |
| ST1S41 | 4 A step-down switching regulator |
