Preface
As a solid-state semiconductor device, transistors are often used to achieve a variety of functions such as wave detection, rectification, amplification, switching, voltage regulation, and signal modulation. Transistors broadly refer to all single components based on semiconductor materials, including diodes, transistors, field effect transistors, thyristors, etc. It uses electrical signals to control itself, has a fast response time, and is highly accurate, and can be used for a variety of digital and analog functions such as amplification, switching, voltage regulation, signal modulation, and oscillators. Its small size, robustness and reliability, low power consumption, and long service life make it also commonly used in amplifiers or electronic switches.
The TO package is the earliest type of transistor package, and the full name is Transistor Outline. With the development of transistor applications, the TO packaging technology has also been gradually improved, covering materials ranging from plastic to metal. The naming of TO packages varies slightly from manufacturer to manufacturer, but usually consists of the package code and the number of pins. For example, TO-220 in TO-220-5 represents the type of package, while the following 5 indicates its number of pins.
Application of TO packaged power devices in fast charging
In order to help readers and friends gain an in-depth understanding of those fast charging switches with built-in TO packaging, the charging head network has sorted out the recent dismantling cases of those built-in TO packaging switches for your reference. Some of the parameters of a variety of switches appearing in the article are shown in the figure, and the application cases and other parameters will be introduced to you below.
Cool State Branch 15 140W 3C1A Charger
The Coolstate 15 charger is designed with a silver and black casing, and the output port is located in the black area for easy identification. The charger is equipped with 3C1A ports, two of which support 140W fast charging output, and the use of blue glue core indicates that it supports 140W fast charging. The charger is equipped with folding prongs for easy daily carrying and storage. At the same time, it also comes with a 1.5-meter-long 240W data cable, which supports 6A fast charging, which is suitable for the charging and use needs of laptops, mobile phones, and tablets.
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Teardown report: Cool State Branch No. 15 140W 3C1A charger
Built-in TO package power device case
英诺赛科氮化镓开关管INN700TK190B
The Innoscience INN700TK190B is a 700V reinforced GaN switch with 190mΩ conduction resistance in a TO252 package.
英诺赛科氮化镓开关管INN700TK350B
The Innoscience INN700TK350B is a 700V reinforced GaN switch with 350mΩ impedance in a TO252 package.
宜家ÅSKSTORM 奥斯通23W 1A1C充电器
The IKEA 23W charger is designed with a white case and has a 1A1C port, of which the USB-C port supports 18W fast charging, and the USB-A port supports 5W charging. The dual ports can be used at the same time to meet the charging needs of mobile phones and night lights and other devices. Use onsemi switching power supply solution, and use Toll Micro TMI2242E synchronous step-down chip for USB-A port step-down output. The internal process and materials of the charger are good, and it is worth some of the selling price.
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TEARDOWN REPORT: IKEA ÅSKSTORM OSTONE 23W 1A1C CHARGER
Built-in TO package power device case
丽隽MOS管PSA10N65C
The PIP PSA10N65C is a 650V NMOS tube with 0.7Ω conduction resistance and a TO-220F package.
锦鸿泰140W 2C1A三口氮化镓充电器
This 140W GaN charger is made with a white shell and folded pins, which is beautiful and practical. The charger is the mainstream 2C1A interface configuration, the USB-C1 interface supports 140W output, which can meet the fast charging needs of Apple MacBook Pro laptops, USB-C2 supports 100W output, USB-A port supports 30W fast charging, and supports power blind plugging and automatic power allocation, and the fast charging protocol supports comprehensively, which can meet the simultaneous charging needs of multiple devices.
Related Reading:
Teardown report: Jinhongtai 140W 2C1A three-port gallium nitride charger
Built-in TO package power device case
Core trunk technology silicon carbide switch tube XD6504D
The core trunk technology XD6504D is a 650V silicon carbide switch, with a working current of 6A at 135°C, with the advantage of zero reverse recovery current, with a positive temperature coefficient, easy to operate in parallel, support high-speed switching, with low switching loss and low heat dissipation requirements, using TO252 package.
Summary of the charging head network
Charging head network understands that a product type that can have a place in the market all year round must have its merits. Although the TO package is the earliest form of power device packaging, the TO package is still known for its stability, helping manufacturers provide a solid foundation for the long-term reliability of their products. In addition, the TO package has excellent heat dissipation capacity and is easy to mount heat sinks, which is one of the important reasons why it is widely used in multi-port fast charging products and various high-power power supplies with increasing power. As the power increases, so does the heat generated by the device, and good heat dissipation can effectively disperse the heat and keep the device operating within a safe temperature range, thereby extending its life and ensuring product reliability.