In the future, PMIC high current will become the mainstay of mobile power supply-EEWORLD

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As smartphones have larger screens, more functions, and larger battery capacities, the technical requirements for power management ICs have become more stringent. In addition to optimizing the software system, another feasible way to solve the problem of rapid power consumption is to increase battery capacity to increase battery life. As a result, the demand for PMICs has increased dramatically. It can be predicted that in the future mobile power industry, high-current PMICs will become the mainstream. The function of power management ICs (PMICs) is to manage, monitor, and display the battery charging and discharging process and the battery's current power, as well as to protect the battery's operation, thereby extending the battery's service life. The demand for power management ICs (PMICs) has increased rapidly in recent years, mainly due to the hot sales of smartphones. Taking the Chinese market as an example, the power management IC (PMIC) market increased by about 20% to 30% in 2013, and the market size further expanded, and it is expected to exceed 500 million yuan in 2014. At the same time, as smartphones have larger screens, more functions, and larger battery capacities, the technical requirements for power management ICs (PMICs) have also become more stringent, requiring faster charging, more accurate monitoring, and a more compact size. Hu Shenghua, general manager of Zhishang Microelectronics, said that overvoltage, overcurrent, overtemperature and other protections for battery management are indispensable functions. High current and switch-mode power management ICs (PMICs) have become mainstream . For battery management of mobile devices, at present, when surfing the Internet, playing games, positioning, navigation and other functions are turned on, power will be consumed quickly in mobile Internet terminals such as smart phones and tablets. Hu Shenghua, general manager of Shenzhen Zhishang Microelectronics, said that to solve this problem, in addition to optimizing the software system, another feasible method at this stage is to increase the battery capacity to increase the battery life. Shipments of mobile power management ICs continue to increase, and the industry market scale continues to expand. Hu Shenghua, general manager of Zhishang Microelectronics, specifically pointed out that the topology used by the company's mobile power IC is the first in the industry. The same inductor is used for boost and buck. Not only can charging be synchronized, but it also supports synchronous boost to charge mobile phones. Therefore, the efficiency and low temperature performance are very good when charging with 1A-2A input. At the same time, it also integrates an operational amplifier to achieve accurate power indication and provide overvoltage, overcurrent, short circuit, current limiting protection and other functions. Hu Shenghua also said that the company's mobile power management chip orders are currently 3-5KK per month. In 2014, Zhishang Microelectronics will launch three to four new mobile power chips. Their mobile power market supply will exceed 8KK, and some other markets will also have a supply of about 2-3KK. Shenzhen Zhishang Microelectronics is a joint venture established by Taiwan IC design companies, venture capital companies, and senior people in the microelectronics industry. Relying on the support of Taiwan's R&D team and wafer foundry, the company has worked closely with many mobile power manufacturers, including Lenovo, Dianxiaoer, Yubo and other professional manufacturers.
More streamlined and lower-cost power management solutions are favored. Hu Shenghua of Zhishang Microelectronics believes that 2014 will be the spring of mobile power. In the mobile power industry, both suppliers and customers are currently in a mixed situation. After the recent reshuffle, only high-quality and powerful manufacturers will survive, and then there will be healthy competition. Under this situation, Hu Shenghua is firmly optimistic about the mobile power industry and will continue to enrich the mobile power management IC product line in 2014. In addition, he pointed out that the trend of lithium battery charging management IC will definitely develop towards high voltage, high current and high integration. In response to this development trend, Zhishang Microelectronics has already made corresponding adjustments. In 2014, it will successively launch a series of lithium battery charging management chips with integrated MOS. Taking the products launched at the end of February 2014 as an example, it can integrate 4A MOS and simplify the periphery to only use inductors, resistors and capacitors to achieve 2A charging and discharging, making the cost of 2A input and 2A output mobile power PCBA finished products as low as more than 3 yuan, and other comprehensive performance is more outstanding, which is worth looking forward to.

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