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With the widespread popularity of fast charging in cars and mobile phones, car manufacturers have also begun to install fast charging devices in their cars. However, compared to ordinary consumer chips, automotive grade chips have the characteristics of high reliability, high safety, high consistency, and long-term supply due to their involvement in driving and passenger safety. Based on years of deep accumulation in the field of consumer electronics, Nanxin Technology is in a leading position in domestic chip design in terms of technological innovation, product competitiveness, manufacturing scale, and supply capacity.

Starting from 2020, based on its experienced and strong capabilities, Nanxin has entered the automotive electronics field with the help of "localization" Dongfeng, and has rapidly expanded in this emerging market. It has successively launched several automotive grade chips, such as SC8701Q/SC8101Q/SC5003Q/SC2021Q, and has passed AEC-Q100 certification.

Recently, Nanxin Technology has launched a heavyweight new product:SC8741Q, a synchronous voltage rise and fall control chip with high support for 100W peak output power, has passed AEC-Q100 vehicle specification certification.

This product meets the requirements of high working voltage support up to 36V, integrates 2 MOSFETs, supports high-power support of 100W, peak efficiency can reach over 95%, supports I2C control mode, and has functions such as frequency spreading and low power consumption mode. It can be widely used in intelligent cabins, ADAS, wireless charging in vehicles, wired charging in vehicles, and other fields.

SC8741Q Fixed Output 5V Efficiency Curve

SC8741Q VIN=12V VOUT=20V3A class 5 standard EMC test (voltage method)

SC8741Q VIN=12V VOUT=20V3A class 5 standard EMC test (current method)

Product features

-SC8741Q meets the AEC-Q100 standard for automotive applications:

• Temperature level: TA range: -40° C to 125° C

-Integrated high edge gate driver

-Input voltage range: 4V~36V (Rising) 3.7V VIN input (Falling)

-Output voltage range: 1V to 22V

-Programmable Power Supply (PPS) provides support for USB power transfer

• Programmable reference voltage range: 0.1V -1.123V, resolution of 1mV

• Programmable output current limit up to 6.35A, with an accuracy of 50mA

• 5% output current limit accuracy

--The I2C interface can be used for:

• 280k/420k/560kHz frequency optional

• Auto PFM/Forced PWM

• Frequency broadening

• Line loss compensation

• Output current limiting

-Short circuit protection function between battery and casing

-Support external VCC to achieve higher efficiency

-Supports OCP/SCP/OVP/OTP protection