The market for home robots has broad prospects, and performance details will determine market performance.

Traditional household electrical equipment is often powered by mains power and has a single function. But with the development of artificial intelligence (AI), machine learning and sensor technology, today’s home robots (home appliances) are becoming more and more complex. These robots can navigate in complex environments, recognize objects, and respond to voice commands. To respond, corresponding sensors and processing and storage devices need to be deployed. In addition, there are already an increasing number of home robots with connectivity capabilities. More functions mean that the system needs to provide enough power to support its performance requirements. There are more and more functions and higher and higher performance. However, at the same time, as the system size shrinks, more attention needs to be paid to overheating, overcurrent, etc. Protection against surges, overcurrent, overvoltage and other electrical problems.

Another relatively certain development trend in the home robot market is the use of battery power supply, instead of the mains power supply method of traditional equipment, in order to bring more mobility and convenience to system applications. However, how to manage the charging and discharging process of the battery to make the system achieve higher safety and higher energy efficiency is the key to ensuring the normal operation of the system and achieving longer standby time and battery life.

Below we introduce the architecture and recommended components of some typical home robots.

Typical component recommendations

The 467 series fast-acting surface mount fuse series is an ultra-small (0603 size) thin film device that can be used for secondary protection of circuits and is suitable for space-limited applications such as home robot battery packs. This series of fuses is 100% lead-free and complies with the RoHS directive. New halogen-free 467 series fuses are also available.

Main functions and features:

• Compatible with lead-free solder and higher temperature profile

• High-performance materials, devices with better performance under high ambient temperatures

• The top is marked with a code to identify the rated current without testing.

• Small form factor for highly sensitive equipment

• Flat top surface suitable for robotic pick and place operations

• Surface material accepts industry standard cleaning

• Same mounting spacers and electrical properties as Littelfuse 431 and 434 series products

• Alloy element construction makes this series more surge current resistant (I2t) than ceramic or glass tube 0603 fuse products.

SMF4L series TVS diodes

SMF4L Series Transient Suppression (TVS) Diodes in a low profile plastic package with a low profile are designed to protect sensitive electronic equipment from voltage transients caused by lightning strikes and other transient voltage phenomena.

Main functions and features:

• 400W peak pulse power at 10x1000µs waveform, repetition rate (duty cycle): 0.01%

• Compatible with industry standard package SOD-123FL

• Low inductance, excellent clamping capability

• Surface mount products that optimize board space

• Typical failure mode is short circuit due to exceeding specified voltage or current

• The tin wire test is based on tables 4a and 4c of JEDEC JESD201A

• IEC-61000-4-2 ESD 30kV(Air), 30kV (contact discharge).

• Data line ESD protection in accordance with IEC 61000-4-2

• Data line EFT protection according to IEC 61000-4-4

• Fast response time: typically less than 1.0ns from 0 to VBR minimum

LS2405IDD23 Series eFuse

WSTC Series Low Ohm Current Sensing Resistors