More and more designers are turning to flat-sized, high-capacity Lithium Polymer (LiP) batteries to optimize space for tablets, ultra-thin PCs, e-readers and other small and slim consumer electronics. . At the same time, battery manufacturers have been faced with the challenge of finding ultra-compact overheat protection devices to cope with the large currents typically generated by these applications. In response to demand, TE Circuit Protection, a division of TE Connectivity Ltd., introduced the MHP-TA series ultra-small for lithium battery protection (length: 5.8mm x width: 3.75mm x height: 1.15mm) Reconfigurable Thermal Shutdown (TCO) devices, the MHP-TA Series has a 9VDC rated voltage, two product types with different current carrying capacity levels, and a variety of rated turn-off temperatures.
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The MHP-TA series is an extension of TE's innovative Metal Hybrid PPTC (MHP) technology, which uses a parallel connection to a bimetal protector and a polymer positive temperature system. (polymeric positive temperature coefficient, PPTC) device. The first two MHP products – the MHP30-36 and MHP-SA series – target larger current (over 30Vdc, 30A) lithium-ion battery pack applications for portable power tools and energy storage systems.
The new MHP-TA family of devices is designed for applications with lower voltage ratings and currents, so TE Circuit Protection can reduce the size of MHP products and provide ultra-compact devices to meet the space requirements of the growing LiP market. In battery design, the MHP-TA Series helps provide resettable overheat protection while using a PPTC device as a heater and keeping the bimetal locked until the fault is removed.
Ty Bowman, Strategic Marketing Manager of TE Circuit Protection, said: "In order to catch up with the trend toward miniaturization of consumer electronics, battery designers are increasingly using LiP batteries in thin products that are on the market. However, designers have long found The large-capacity lithium polymer battery design has limited protection options for overheat protection. The introduction of the MHP-TA series allows them to now choose an ultra-compact, self-healing, high-performance thermal protection product."
The MHP-TA series consists of nine devices with two current-carrying capacity levels: the low-current MHP-TA6-9 product family has approximately 6A holding current at 25°C, while the high-current MHP-TA15-9 product line It has a holding current of approximately 15A. The MHP-TA6-9 series is available in four different temperature ratings (72°C, 77°C, 82°C, 85°C), while the MHP-TA15 series has five temperature ratings (72°C, 77°C). , 82 ° C, 85 ° C, 90 ° C) selection.
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