Shanghai YinT Electronic Co,.Ltd

CPU protection
The Voltage Regulation Module ( ) is used to power the processor. Due to the momentary load, the processor current may rise to 13A. At the same time, during normal operation, when the processor activity level changes, the required current still varies as much as 7A. This instantaneous demand for high current can cause component damage. protection helps prevent damage to the processor if the VRM fails.
·RGEF、RUEF
·
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UWB positioning tag circuit protection solution
positioning tags (cards or bracelets, etc.) can send pulse information to the positioning base station according to the set communication protocol (such as BLE5.0) and communication frequency, thereby achieving real-time precise positioning of people or items (up to 10cm). This kind of positioning tag is powered by a rechargeable lithium battery and can be used continuously for more than 3 months. At the same time, the positioning tag can also realize the alarm and help function through the alarm button.
Yint Electronics proposes effective circuit protection solutions for UWB positioning tag circuits.
Power supply end: Positioning tags generally use a power supply scheme that charges lithium batteries through a USB port, which may produce surge current and instantaneous overvoltage. For surge current, it is recommended to use Yint Electronics overcurrent protection device, SMD1206-050 self-restoring fuse. For transient voltage suppression, Yint Electronics TVS device, ESDSR05, can be used to effectively protect ESD interference from the data port.

At the same time, when the power is turned on, a momentary overvoltage may occur, affecting the and sensor module. Therefore, transient voltage suppression is performed on the power supply terminals of the MCU and sensor modules.
Website:https://www.yint-electronic.com/
Email:[email protected]
Whatsapp:13654948860

positioning base station circuit protection solution
YINT electronics provides effective circuit protection for UWB positioning base stations:
① power supply: The power supply of UWB positioning base station is mainly 12~48V DC power supply, and some are equipped with POE power supply port. For 12V~48VDC power supply, Yint Electronics recommends an -grade two-level surge protection solution.
②Ethernet interface: Yint electronics protection solution mainly protects the Ethernet communication module from transient overvoltage damage and provides surge protection for POE power extraction.

Website:https://www.yint-electronic.com/
Email:[email protected]
Whatsapp:13654948860

Battery pack circuit protection
The power bus of the battery pack needs to avoid being affected by lithium-ion battery overcurrent and ESD. The control lines (such as SMbus, I2C, etc.) also need to avoid being affected by ESD. The low-voltage (≤5V) ESD protection circuit is as follows.
This solution complies with IEC61000-4-2 air 15KV contact 8KV.
The overcurrent protection of the battery pack uses YINT's SMD PPTC, packaged 0603, 0805, 1206, 1210, 1812, 2018, 2920 and so on. ESD protection can use discrete multilayer varistors or diode arrays.
Regarding the safety of the battery pack, it meets the test methods: UL 1642 UL 2054 IEC 61960 IEC 62133; regarding the ESD anti-static protection diode, it meets IEC 61000-4-2.
PPTC (resettable fuse) needs to be selected carefully to ensure the performance of the overcurrent device. It is important to consider the rated temperature of the battery pack because this temperature will affect the trip point and trip time of the overcurrent protection device.

One-click start button electrostatic protection
The PEPS system engine start button usually has an LED light color change indicator to indicate status information. In order to prevent static electricity from giving error information to the main control chip, the key-activated unit needs to add a small package electrostatic protection device. Yint Electronics' automotive grade electrostatic protection device ESD5V0D9B is packaged in SOD923 (dimensions: length, width and height 1.0mm, 0.5mm, 0.4mm) and can withstand up to 30kV electrostatic disturbance.

Website:https://www.yint-electronic.com/
Email:[email protected]
Whatsapp:13654948860

Rf radio frequency communication protection
·The PEPS system controls the vehicle base station to wait for tag return instructions, and mainly uses 315MHz~433MHz radio frequency for communication. The PEPS system positioning tag (smart key) combines the door handle button switch instructions to send RF radio frequency encrypted signals to the vehicle base station. After matching, the vehicle base station will provide access control and unlock, and the occupants can enter the car.
·For the RF radio frequency receiving module, we use Yint Electronics' low-capacitance electrostatic protection device ESDLC5V0D3B, SOD323, and the

Lf low frequency communication protection
·2PEPS system LF low-frequency communication uses 125kHz frequency for communication. The 6 (or 8) antennas of the base station send out 125kHz signals to find the location of the tag (smart key) and match and wake it up. When the tag (smart key) is located in the car and the key is matched, the anti-theft controller IMMO and electronic steering column ESCL unlocking instructions can be given, and the driver can start the engine through the ignition button.
·Changes in the antenna signal and equivalent load changes for the transmitting module require surge or electrostatic protection. It is recommended to use Yint Electronics 5V, SOD323 packaged electrostatic protection device ESD5V0D3B. The PCB layout design is recommended to be close to the antenna access port of the module.

LIN bus communication protection
LIN bus communication is mainly used between the PEPS system and the electronic steering column lock ESCL.
LIN interface protection can use LIN special devices ESDLIN1524D3B, ESD24VAPB, etc. for protection.

CAN bus communication protection
· The PEPS system communicates with the body control system BCM and other major components of the car through the CAN bus.
·Yint Electronics provides automotive-grade CAN bus protection special device ESD24VAPB designed close to the CAN bus interface of the module.

Power PDU Management Unit Surge Protection
The power PDU management in the PEPS system mainly includes the power supply for components such as the electronic steering column lock ESCL, and Yint Electronics TVS is used for surge protection.
Commonly used protective devices are:
SM8S24CA, SM8S33CA, SM8S33A, SM8S36CA, etc. The specific selection needs to be based on the vehicle power system and component power.

RF radio frequency transmitting module protection
Similar to the high-frequency information receiving module of the base station, the PEPS smart key also requires electrostatic protection. Considering the space of the key, it is recommended to use Yint Electronics' ultra-low capacitance

LF low frequency receiving module protection
The smart key is equipped with a low-frequency LF receiving module and a low-frequency antenna. It is recommended to use Yite Electronics' ultra-small package SOD923 or SOD882 packaged electrostatic protection devices ESD5V0D9B and ESD5V0D8B to protect the low-frequency receiving module from static electricity.

Button unit protection
The PEPS smart key retains the traditional RKE button unit, which is in line with the habits of many people. Figure shows the circuit protection scheme that retains the unlock, lock, and trunk buttons. The button unit circuit may generate electromagnetic disturbances such as static electricity when the button is pressed, released, or detected by the human body, which is transmitted to the I/O port of the main control IC and affects the normal operation of the main control IC. At the TVS2/TVS3/TVS4 position between the button and the I/O port of the IC, Yint Electronics recommends using the electrostatic protection device YINT ESD5V0D5B, SOD523 small package to protect the button unit circuit.

Power management unit protection
The PEPS smart key is mainly powered by batteries (such as CR2302).When the environment changes, there may be a surge impact on the power supply terminal of the main control IC. It is recommended to use Yint Electronics transient suppression diode TVS SMF5.0CA for surge protection.

Protection circuit of TIDA-01588 Series
The -01588 Series is widely used in laser printers to drive and control the position of brushed DC (BDC) motors that run on 3- to 6-cell lithium-ion batteries, where the power supply and Encoder signal lines are found to be susceptible.
Its power port protection device uses SMBJ33CA, which can protect the power chip very well. The surge at the input end has a good clamping effect and has a picosecond-level response speed.
important parameters:
·PW: 600W [email protected] clamping voltage 53.3V
·SMD chip package, DO-214AA/SMB
·Ultra-low leakage current, picosecond response
·JESD210A international standard

Universal telephone line lightning protection circuit (differential mode GDT 5KA 1500V level)
Suitable for circuits, telecommunications, POS terminal equipment, fax and other related products that use telephone signals, etc.
Product selection:
GDT 2R230L-8 (L is plug-in type, M is patch type)
Thyristor INT.P3100SAL (IPP is 50A) Or INT.P2300SAL (IPP is 50A)
TVS P6KE200CA (plug-in type) Or SMBJ200CA
INT PPTC INT250-120 (2500V level)

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Whatsapp:13654948860

Universal telephone line lightning protection circuit (common mode GDT 10KA 4000V level)
Suitable for circuits, telecommunications, POS terminal equipment, fax and other related products that use telephone signals, etc.
Product selection:
GDT 1~3 3R230L /M (L is plug-in type, M is patch type)
Thyristor INT.P3100SCL (IPP is 100A) Or INT.P2300SCL (IPP is 100A)
INT PPTC INT250-120 (2500V level)

RJ45 port
For the port on the set-top box device, considering the equipment damage caused by static electricity during frequent plugging and unplugging, devices can also be added to the port to protect against interference. Figure shows the application of using ESD devices for protection on 10/100baseT and 1G Ethernet respectively.
Our products include , Devices, , , , , , Diodes, , , , , , and so on.

FlexRay
Yint Electronics' solution can protect the Flexray bus from ESD and other transient damage, meet the Flexray 10M/s transmission rate, and can absorb 300W of 8/20 μs surge energy.

antennas
NFC is a short-range high-frequency radio technology that operates at a frequency of 13.56MHz within a distance of 20 cm. Usually in NFC design, the NFC antenna is connected to the NFC control IC through a small contact, and these contacts are easily damaged by ESD, causing the control IC to fail, so it is strongly recommended to use Yint's solution.

Website：https://www.yint-electronic.com/

Semiconductor discharge tubes are used in security units
The mode of the gas discharge tube is ionization discharge. After discharge, the temperature is high, which may affect the service life of the main distribution frame. At the same time, the gas discharge tube has the phenomenon of failure due to chronic air leakage. After the failure, the external line and the ground wire are in an open circuit state. In this case, the protection reliability of the security unit is reduced, and it may not even be able to play its due protective role.
In addition to the basic functions of the gas discharge tube security unit, the semiconductor discharge tube security unit also has the following characteristics: the semiconductor tube is less likely to cause fire due to its low temperature during discharge; there is no chronic air leakage, and the protection reliability of the security unit is good; the semiconductor tube The response speed of the discharge tube to the surge impulse voltage can be less than 1ns, and the response speed is fast.

website：https://www.yint-electronic.com/

5G power protection devices
-48V common protection scheme
Solution 1:① The device is used, the varistor is 14D820KH, the gas discharge tube is 2R090S-6*4.2, the TVS is SMCJ58CA, which meets the requirements of 1.2/50-8/20us comprehensive wave CM/DM 6KV-3KA
② Advantages of the solution: The protection level is relatively high, and devices can be flexibly replaced to achieve different protection levels.
③ Disadvantages of the solution: The devices used are relatively large and take up a lot of space, which is not conducive to miniaturization design.
Solution 2：①Device selection: If the protection level is not high, choose SMDJ58CA or 5.0SMDJ58CA. If the protection level is relatively high, Littel’s AK10 series and plug-in products are more commonly used on the market, and our company’s newly developed LSPD6 series and LSPD10 The series is a perfect replacement for the AK10 series, and it is in SMD packaging, which is very conducive to automated production. Its parameters are as follows.
② Advantages of the solution: fewer components are used, small space is occupied, and no decoupling inductor is needed.
③ Disadvantages of the solution: Slightly higher cost
Mainly used in BBU power supply section.

HDMI, VGA, DVI, mini DP video data interface
The biggest problem with laptops having only one Type-C interface is that it causes trouble for IT professionals to connect projectors. Traditional wired projectors generally need to use VGA or HDMI interfaces to connect. This is also one of the biggest driving forces for the development of docking stations.
To ensure high-speed data and control signal transmission, interference factors such as static electricity need to be eliminated as much as possible.
HDMI protection devices generally require small packages to facilitate component layout and PCB wiring (Figure 10); ultra-small capacitance (1pF).
It is recommended to use Yint Electronics electrostatic protection device ESD0524P, which is packaged in DFN2510 and is 0.35pF.

website：https://www.yint-electronic.com/