Cirrus SA306三相15A马达驱动方案

Cirrus Logic公司的SA306是全集成三相智能开关放大器,三个单独的半桥能向无刷直流电机(BLDC)提供峰值15A电流的驱动能力. SA306采用微控制器或DSC控制,并提供热和短路监视.工作电压从8.5V 到 60V,主要应用在三相无刷直流电机(BLDC), 直流无刷马达和三个单独的螺线管激励器.本文介绍了SA306的主要特性, 方框图, 应用系统方框图以及SA306评估板电路图和评估板材料清单(BOM).

SA306:3 Phase Switching Amplifier
The SA306 is a fully integrated switching amplifier designed primarily to drive three-phase Brushless DC (BLDC) motors. Three independent half bridges provide over 15 amperes peak output current under microcontroller or DSC control. Thermal and short circuit
monitoring is provided, which generates fault signals for the microcontroller to take appropriate action.

Additionally, cycle-by-cycle current limit offers user programmable hardware protection independent of the microcontroller. Output current is measured using an innovative low loss technique. The SA306 is built using a multi-technology process allowing CMOS logic control and complementary DMOS output power devices on the same IC. Use of P-channel high side FETs enables 60V operation without bootstrap or charge pump
circuitry.
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