BTS54220LBAAUMA1

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The BTS54220LBAAUMA1 is a wide-VIN, low-side power switch product belonging to the Power Management Integrated Circuit (PMIC) family. The device belongs to the Power Distribution Switches, Load Drivers section. This switch has a minimum drain voltage of 7V, a max RDSon of 0.15ohms, and a max drain current of 5.0A. The maximum operating temperature of this product is 150°C and it has extended surge protection capability.

BTS54220LBAAUMA1 finds application in automotive applications that require EMC robustness, EEfficiency and high-current drive capability for motor control, power electronics and interactive power conversion applications. Also suitable for applications like on board diagnosis and communication. In other words, this device is ideally suited for low-side switch arrangements where high temperature, high Current, and low impedance switching needs to be implemented.

This device not only includes a low-side N-channel power MOSFET in a DPAK (TO-252) package, but also integrates an embossed Richtek Technology’s proprietary high-voltage integrated circuit (TLI1301). This integrated circuit can provide a low-side gate driver function and gate voltage protection.

The BTS54220LBAAUMA1 is also equipped with protection features such as undervoltage lockout (UVLO), overcurrent, overvoltage and overtemperature protection. The device can use a simple “enable pin” to turn the driver on or off and the device can operate over an extended temperature range.

Moreover, this device is designed to comply with ISO10605 and has an accu-rate active waveform and robust EMI protection. This device supports pre-bias, multi-pulse, and low-EMI waveform technologies.

The BTS54220LBAAUMA1 utilizes Richtek’s unique TrueSENSE technology which combines advanced high-voltage integrated circuits and mixed-signal processing to provide improved, accurate current sensing and overload protection. With this technology, the device can provide a higher accuracy, real-time power monitoring giving an enhanced system performance.

The BTS54220LBAAUMA1 has a very low power dissipation and quiescent current and is a low-noise, low-EMI device. It features a DirectFET drive and offers superior efficiency in applications where high current is constantly handled. Also offers enhanced threshold voltage detection and protection circuit, as well as improved thermal performance.

The working principle of BTS54220LBAAUMA1 is simple: The integrated low-side power MOSFET and driver ICs actively monitor the voltage across the switch and output a signal that is proportional to the load current to the load based on the load resistance and the load current. When the load current is above the threshold, the driver IC will turn on the MOSFET, thus allowing current to pass to the load. When the current is below the set threshold, the MOSFET will turn off, preventing current from passing to the load and protecting it from overloading.

In summary, the BTS54220LBAAUMA1 device from Richtek is a high-performance switch specifically designed for low-side switch applications requiring high current capability and high temperature operation. It utilizes Richtek’s TrueSENSE technology for accurate current sensing and overload protection, and also offers protection features like undervoltage lockout, overcurrent, overvoltage, and overtemperature protection. The device is ideal for automotive applications such as motor control, power electronics, interactive power conversion and on board diagnosis and communication applications.

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