SLG59H1120V

AI-generated Summary: The document explains how to implement a backup safety power switch using the SLG59H1120V High Voltage GreenFET device to protect consumer autonomous devices with DC motors from overheating and overcurrent events. It details system architecture integrating a motor controller with a backup switch that also monitors current and fault conditions. The device offers overvoltage, overcurrent, and overtemperature protections, along with current sensing and fault signaling to enhance system safety and reliability. The document includes application circuits, test setups, and hierarchical safety strategies to meet IEC60335-1 standards for consumer appliances.

AI-generated Summary: Extending the maximum operating current of GreenFET load switches can be achieved by using two lower-current devices in parallel, maintaining protection features and reducing overall RDSON. Parallel operation balances current sharing due to low RDSON variation in Renesas's MOSFET design. Examples include using pairs of SLG59H1006V and SLG59M1714V devices, with detailed operational waveforms and recommended PCB layouts provided. High-current single devices like SLG59M1568V are also covered. The document includes application diagrams, oscilloscope captures, and design guidelines for high-current load switch applications.

AI-generated Summary: Unidirectional GreenFET load switches can be configured in pairs to create bidirectional load switches (BLS) that conduct current in both directions while maintaining protection features such as current limiting, short circuit, thermal shutdown, and inrush current control. Two types of BLS implementations are detailed: a low-power solution using SLG59M1558V devices and a high-performance solution using SLG59M1709V devices. The document explains circuit configurations, operation waveforms, and protection mechanisms, enabling cost-effective, compact, and reliable bidirectional switching for portable device power management.

AI-generated Summary: High voltage GreenFET devices face damage risks from voltage surges caused by inductive loads such as motors or solenoids. Using a transient voltage suppressor (TVS) effectively protects these devices by clamping voltage spikes above a set threshold. Selecting a TVS with a clamping voltage below the device’s maximum VIN and sufficient current handling capacity ensures reliable protection and normal operation after transient events. The SMAJ18A TVS, with a 29.2 V clamping voltage, suits GreenFETs rated for 30 V VIN, safeguarding against inductive overvoltage spikes.