Microchip Technology MIC4606 85V 全桥 MOSFET 驱动器
Microchip Technology MIC4606 85V 全桥 MOSFET 驱动器提供自适应死区时间和击穿保护。 MIC4606 的自适应死区电路持续监控全桥两侧的情况。 这种设计将高侧和低侧 MOSFET 之间的过渡时间降至最低，从而最大程度地提高功率效率。 防击穿电路可防止错误输入和噪声同时打开桥接器每一侧的 MOSFET。 MIC4606 具有 5.5V 至 16V 的宽工作电压范围，可最大程度地提高系统效率。 使用电池供电应用时，5.5V 工作电压可延长运行时间。 此外，MIC4606 的可调栅极驱动器将栅极驱动电压调节至 VDD 以实现最佳 MOSFET RDS(ON)，因此，由于该 MOSFET 的 RDS(ON)，功率损耗可降至最低。 MIC4606 还具有 235μA 总静态电流、低功耗、35ns 快速传播时间等特性，可驱动 20ns 上升和下降时间的 1000pF 负载。 MC4606-1 包含四个独立的输入，其中 MIC4606-2 使用两路 PWM 输入，每路输入用于半桥的一侧。 MIC4606-1 和 MIC4606-2 采用 16 引脚 4mmx4mm QFN 封装，工作温度范围为 -40°C 至 125°C。
Antishoot-through circuitry prevents erroneous inputs and noise from turning both MOSFETs of each side of the bridge on at the same time. With a wide operating supply range of 5.5V to 16V, the MIC4606 maximizes system efficiency.
When using battery-powered applications, the 5.5V operating voltages enable longer run times. In addition, the MIC4606's adjustable gate drive moves the gate drive voltage to VDD for optimal MOSFET RDS(ON), which minimizes power loss due to the MOSFET's RDS(ON). MIC4606 offers 235μA total quiescent current for low power consumption, fast 35ns propagation times, and drives a 1000pF load with 20ns rise and fall times.
The MC4606-1 includes four independent inputs whereas the MIC4606-2 uses two PWM inputs, one for each side of the H-bridge. The MIC4606-1 and MIC4606-2 are available in a 16-pin 4mmx4mm QFN package with an operating temperature range of -40°C to 125°C.
特性
- 5.5V to 16V gate drive supply voltage range
- Advanced adaptive dead time
- Intelligent shoot-through protection
- MIC4606-1 4 Independent TTL inputs
- MIC4606-2 2 PWM inputs
- Enable input for on/off control
- On-chip bootstrap diodes
- Fast 35ns propagation times
- Drives 1000pF load with 20ns rise and fall times
- Low power consumption: 235μA total quiescent current
- Separate high- and low-side undervoltage protection
- -40°C to +125°C junction temperature range
应用
- Full-bridge motor drivers
- Power inverters
- High voltage step-down regulators
- Distributes power systems
- Stepper motors
Typical Application Circuit
