Yint Provides Low Voltage Power Supply Protection Solution for Electronic Digital Products and Consumer Household Appliances
As the types of electronic digital products and consumer household appliances continue to grow, the laws and regulations on the power interfaces of related electronic equipment have not been synchronized; each manufacturer has its own interface standards; for low-voltage power supplies, anti-misplugging, anti-reverse plugging, and related question, yint provides low voltage power supply protection solution.
5.0V power line protection solution
Reason for protection: 5V circuit of external equipment, commonly used methods: circular connector, 3.96 male and female plug, non-standard red and black wiring; easy to access similar 9V, 12V power plugs, and the 5V power supply is simply filtered and directly connected to the single Various types of ICs, such as chips, are extremely susceptible to damage by surges.
Fig.1
Device selection:
1) PPTC overcurrent abnormal protection, is divided into two types according to packaging: plug-in and patch; its maximum withstand voltage must be higher than 5V, with options of 6V, 8V, 16V, 30V, and 60V, the device nominal The current IH must be greater than or equal to the normal stable operating current of the power circuit.
2) TVS diode, overvoltage abnormality protection, is divided into two types according to packaging: plug-in and patch; it mainly targets the peak surge voltage damage generated during the plug-in process and is also very helpful for EMC testing. For example 5V power supply, normal working current I: 1.0A. Temperature and atmospheric pressure are the normal usage conditions. PPTC is generally easy to plug into the wrong 9V or 12V power supply. Consider the 16V device's withstand voltage. Then consider the packaging form. If the PCBA is relatively compact and highly Restricted, use SMD packaging! In addition, consider the disassembly factors of the device due to the operating temperature.
TVS considers general 5V/1A power supply, relatively low power, and uses 600W peak power devices
Refer to specific model:
Table.1
12.0V power line protection solution
Reason for protection: 12V circuit of external equipment, commonly used methods: circular connector, 3.96 male and female plug, non-standard red and black wiring; easy to access similar 9V, 12V power plugs, and the 12V power supply is simply filtered and directly connected to the single ICs such as chips are extremely susceptible to damage from surges.
Fig.2
Device selection:
1) PPTC self-restoring fuse, overcurrent abnormal protection, divided into two types according to packaging: plug-in and patch; its maximum withstand voltage must be higher than 12V, with options of 6V, 8V, 16V, 30V, and 60V. The nominal current IH of the device must be greater than or equal to the normal stable operating current of the pow
2) TVS transient suppression diode, overvoltage abnormality protection, is divided into two types according to packaging: plug-in and patch; it mainly targets the peak surge voltage damage generated during the plug-in process, and is also very helpful for EMC testing. For example 12V power supply, normal working current I: 1.0A. Temperature and atmospheric pressure are the normal usage conditions. PPTC is generally easy to plug into the wrong 18V or 24V power supply. Consider the 30V device's withstand voltage; then consider the packaging form. If the PCBA is relatively compact and highly restricted, use SMD packaging! In addition, consider the disassembly factors of the device due to the operating temperature.
TVS considers a general 12V/1A power supply, relatively low power, and uses 600W peak power devices.
Refer to specific model:
Table.2
24.0V power line protection solution
Reason for protection: 24V circuit of external equipment, commonly used methods: circular connector, 3.96 male and female plug, non-standard red and black wiring; easy to access similar 28V, 36V power plugs, and the 24V power supply is simply filtered and directly connected to the single Various types of ICs, such as chips, are easily damaged by surges.
Fig.3
Device selection:
1) PPTC self-restoring fuse, over-current abnormal protection, divided into two types according to packaging: plug-in and patch; its maximum withstand voltage must be higher than 24V, 60V option, the nominal current IH of the device must be greater than or equal to the normal stable operating current of the power circuit.
2) TVS transient suppression diode, overvoltage abnormality protection, is divided into two types according to packaging: plug-in and patch; it mainly targets the peak surge voltage damage generated during the plug-in process, and is also very helpful for EMC testing. For example 24V power supply, normal working current I: 1.0A. Temperature and atmospheric pressure are the normal usage conditions. PPTC generally makes it easy to insert the wrong 28V or 36V power supply. Consider the 30V device's withstand voltage; then consider the packaging form. If the PCBA is relatively compact and highly restricted, use SMD packaging! In addition, consider the disassembly factors of the device due to the operating temperature.
Refer to specific model:
Table.3
36V power line protection solution
Reason for protection: 36V circuit of external equipment, commonly used methods: round connector, 3.96 male and female plug, non-standard red and black wiring; easy to connect to similar 48V power plug. Moreover, the 36V power supply undergoes simple filtering and is directly connected to various ICs such as a single chip, which is easily damaged by surges.
Fig.4
Device selection:
1) PPTC self-restoring fuse, over-current abnormal protection, divided into two types according to packaging: plug-in and patch; its maximum withstand voltage must be higher than 24V, 60V option, the nominal current IH of the device must be greater than or equal to the normal stable operating current of the power circuit.
2) TVS transient suppression diode, overvoltage abnormality protection, is divided into two types according to packaging: plug-in and patch; it mainly targets the peak surge voltage damage generated during the plug-in process, and is also very helpful for EMC testing. For example 24V power supply, normal working current I: 1.0A. Temperature and atmospheric pressure are the normal usage conditions. PPTC generally makes it easy to insert the wrong 28V or 36V power supply. Consider the 30V device's withstand voltage; then consider the packaging form. If the PCBA is relatively compact and highly restricted, use SMD packaging! In addition, consider the disassembly factors of the device due to the operating temperature.
TVS is considered a general 24V/1A power supply, the power is medium level, and it uses 600W or 1500W peak power devices.
Refer to specific model:
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本文由三年不鸣转载自Yint News,原文标题为:Low Voltage Power Supply Protection Solution,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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The working principle of PPTC(Polymeric Positive Temperature Coefficient) is based on the positive temperature coefficient property of the material.
SMCJ-H Series Automotive and High Reliability TVS Diodes with Excellent Clamping Capability, High Surge Capability, Low Zener Impedance and Fast Response Time
The SMC-H series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. The SMC-H series is supplied in YINT Semiconductor‘s exclusive, cost-effective, highly reliable and is ideally suited for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications.
The Applications of PPTC Protection Devices in Wireless Electronic Products, Battery Packs, Chargers, Power Converters and Transformers
PPTC devices can effectively protect a wide range of circuits and have been recognized by safety agencies around the world. It not only has reliable performance, but also has self-recovery properties, which reduces the cost of product warranty, service, and repair, and also increases user satisfaction with the product.
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品牌:硕凯电子
品类:Surface Mount Transient Voltage Suppressors
价格:¥0.2000
现货: 186,794
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可定制丙烯酸酯胶粘剂的粘度范围:250~36000 mPa·s,硬度范围:50Shore 00~85Shore D,其他参数如外观颜色,固化能量等也可按需定制。
最小起订量: 1 提交需求>
可定制环氧胶的粘度范围:9000~170000 mPa·s;固化方式:可加热、仅室温、可UV;其他参数如外观颜色、硬度等也可按需定制。
最小起订量: 1支 提交需求>
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