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STL6300
STL6300 是一款系统级封装三相无刷直流电动机驱动器，配备8052 1T-架构的微控制器、16Kx8 嵌入式闪存，并整合了 5V LDO 电源管理以及内建的 6N-MOS 驱动器。此外，它还具备一个比较器，用于无传感器检测电动机换相，以及智能风扇通讯接口。它可以提供高达 6.5A 的驱动电流，并在 6V 到 20V 的工作电压范围内可靠运行。 STL6300 具有先进的死循环控制，旋转速度变化范围在 ±5% 之内，并具备可编程增量占空比的软启动功能，以抑制线圈电流的上电尖峰，并能降低启动噪音和减轻功率负载。另外 可以通过内部参考电压提供电流限制功能。支持锁定侦测并自动停止输出电流。一旦外部负载放松，将自动恢复到系统指定的速度。各种Iopen-drain 输出类型，如FG、RD、停止RD和反向RD，被实现为系统用于监控具有4、6或8个磁极的直流风扇速度的转速计。
Features
- Absolute maximum voltage 20V
- Operating input range VBB=6V ~ 20V
- Built-in power MOSFET with peak current 6.5A
- Output short circuit protection
- Closed-loop fan speed control within ±5% accuracy of rotation speed
- Support soft-start and features anti-wind pressure start-up
- Built-in Sensorless BEMF Detection Circuit
- Support auto-phase control
- Programmable fan speed curve set by 13 points
- Wide PWM input frequency range with reverse-able polarity
- Support current-limit setting internally with multi-levels
- Built-in thermal protection circuit
- Built-in over-voltage and under-voltage protection
- Built-in programmable period for lock detection and auto recovery
- Various open-drain tachometers: FG, RD, Stop RD and Reverse RD
- Wide product selection to support 2~20 pairs magnetic poles
- One master/slave I2C interface
- Built-in In-system Program (ISP) communication to program parameters
- Two Packages for QFN24 (4mm x 4mm) and QFN28 (5mm x 5mm)
- Absolute maximum voltage 20V
Applications
