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Siyuan launched the high-current charging and low-current cut-off chip SY6201 to solve the pain points of battery technology

Release on : Apr 12, 2022

Siyuan launched the high-current charging and low-current cut-off chip SY6201 to solve the pain points of battery technology
Chip SY6201 solves battery technology
With the popularity of smart phones and the advancement of technology, the consumer electronics industry has achieved rapid development in the past 10 years, and the birth of the concept of the Internet of Things has further promoted the application of smart terminal products in more fields.


After years of upgrading and iteration, smart terminal products can carry more and more application functions, and put forward higher requirements for product battery life. With the development of lithium battery technology, fast charging power management technology is adopted by more and more manufacturers. However, in traditional charge management chips, the high-current constant-current charging setting often affects the increase of the cut-off current. In the application of high-rate battery fast charging, the battery cannot be fully charged in order to take into account the fast charging.
Based on this technical pain point, Siyuan launched a 2A, BUCK charge management chip SY6201 with a 10mA cut-off current. This chip can better meet the performance requirements of high-current charging and low-current cut-off.
Founded in 2011, Siyuan is a national high-tech enterprise and a leading power chip company in the TWS industry. It has been focusing on the design of POWER+ power management system chips for battery applications. Committed to providing leading battery management system-on-chip solutions for smart wear, consumer electronics, industry, new energy vehicles and other industries. Including mobile power SoC chip, TWS headset power management chip, lithium battery charging chip, power management PMIC, wireless charging chip, etc.
In the past 11 years, Siyuan has launched a variety of different types of power chips in the market, all of which are widely welcomed by the market. In addition to sharing this newly launched SY6201 chip with you, this article further sorts out the application of Siyuan chips in the market. Condition.
1. Introduction of Siyuan SY6201 chip


SY6201 is a highly integrated single-cell Li-ion/Li-polymer battery switch charging chip with system power path management (NVDC) function, suitable for portable wearable devices with small size and small charging cut-off current. The integrated path management function can ensure the system power supply first, and still meet the requirements of the system supply voltage when the battery is over-discharged, which is plug and play.
In addition, SY6201 also has precharge (PRE.C), fast constant current charge (CC) and constant voltage (CV) adjustment functions, as well as charge end point control and automatic recharge function when the battery voltage drops, SY6201 uses QFN-24 4mm × 4mm package.
Siyuan SY6201 Product Features
Voltage: 3.5V~4.52V charging float voltage, accuracy of ±0.4%, 10mV step; 22V high input withstand voltage;
Current: 5% constant current charging accuracy, 20mA step; charging cut-off current accuracy 20mA±2mA, minimum support 10mA;
Support: safety timing during charging; delay timing mode after charging is completed; battery temperature NTC detection, JEITA curve can be configured;
Integrated charging overvoltage protection; I2C programmable charging voltage, current and temperature thresholds;
The charging current temperature adjustment function, the charging current automatically decreases with the increase of temperature;
With dynamic adjustment function when the input power is insufficient, including IINPDM, VINDPM and timely battery replenishment;
Support comprehensive protection mechanisms, including VSYS over-current and short-circuit protection, battery over-voltage, input over-voltage and over-temperature, etc.;
Support configurable delay to enter ship mode;
10uA standby power consumption, 2uA ship mode power consumption;
Complete status reporting and interruption mechanism;
Comprehensive system reset mechanism, support long-press button/watchdog/VBUS insertion and other configurable system power-off reset functions.
Siyuan SY6201 typical application circuit
The SY6201 integrates an I2C communication module, the host can flexibly configure the charging parameters and obtain the charging status, and can report related interrupts at the same time. Integrate a comprehensive reset function, including charge and discharge watchdog timer reset, key reset, and register reset.


(SY6201 typical application circuit)


(chip pin diagram)
Siyuan SY6201 application scenarios
The excellent charging management performance of SY6201 is especially suitable for portable smart terminal products. Typical applications include but are not limited to the following scenarios:


Small partners who are interested in Siyuan intelligent charging management chip SY6201 are welcome to apply for samples and development boards through [email protected].
2. Market application of Siyuan chip products
Siyuan designed 11 chips in the first year of its establishment, and completed the design and mass production of 60 ICs in the following two years. In 2014, Siyuan entered the fast-exploding mobile power supply market three years after its establishment. MP2310 is Siyuan's first mobile power SoC. Because of its extremely high cost performance, it was adopted by many white-brand market customers. From 2014 to 2015 More than 30 million pieces were sold in two years.
With the rapid growth of the mobile power supply market, Siyuan's products have also been upgraded from linear charging to asynchronous boosting to switching charging + synchronous boosting. In 2017, the monthly shipment of Siyuan mobile power SoC reached 12KK.
From 2017 to 2021, the TWS earphone market continued to explode at a high speed. In the past few years, Siyuan's research and development focus has gradually shifted from the mobile power supply market to the TWS true wireless earphone market. Relying on the accumulation of technology and experience in the mobile power supply market, the product definition, reliability requirements and specifications of Siyuan TWS chips are closer to those of European and American manufacturers, and even better in some details and performance, so they have achieved a good market. feedback.
SY3402 is Siyuan's first explosive product in the TWS earphone market. SY3402 solves the problem of low power consumption and low current shutdown among the first batch of users. Customers can produce quickly, ensuring that the product's time-to-market is fast enough. There are many options for solution providers.
In 2019, the shipment of Siyuan TWS power management chips exceeded 100KK, and the market share ranked first in the industry. In 2020, Siyuan's high-end power chip SY8801 will be mass-produced, with annual sales exceeding 100 million yuan.


As of March 31, 2022, I learned from the dismantling report of I Love Audio Network that Siyuan's TWS headset power management chip, lithium battery charging management chip and protection device have obtained 55 TWS headsets under at least 35 brands. Product adoption, including:
Mobile phone brands: Xiaomi, OPPO, OnePlus, Meizu, realme, Transsion, Motorola, HTC;
Audio brands: Edifier, Soundkuo, Wanmo, Baseus, 233621, Xiaodu, QCY, Netease Cloud Music, SONG X, Marshall, JBL, Innovative Technology, Sony Ericsson, Philips, Jabra, Magic Sound;
Other 3C digital peripheral brands: Lvlian, Bull, Fenda Technology, Rapoo, Feizhi, TOZO, Amazon, Item Technology, LEANTS, Magic Banquet, noise.
3. Application Cases of Siyuan Chip Products
The dismantling report information of I Love Audio Network shows that the chip product series models used by Siyuan by many TWS headset brands include:
TWS headset power management chip: SY8825, SY8821, SY8815, SY8810, SY8803, SY8802, SY8801, SY7638, SY7636, MP5330, MP3401A, MP3407, SY6103
Lithium battery charging management chip: SY5500, SY7612, SY7618, SY8602;
Protection devices: SY5320, SY8702, SY8701.
TWS headset power management chip


1. Siyuan SY8801
(1) Marshall Mode II True Wireless Bluetooth Headphones
(3) OnePlus OnePlus Buds Z True Wireless Bluetooth Headphones
(5) OPPO Enco Free2 True Wireless Noise Cancelling Headphones
(7) Xiaomi True Wireless Bluetooth Headset Air2 SE
(9) Feizhi X1 Gaming Bluetooth Wireless Headset
(11) Baseus Bowie E2 True Wireless Headphones
(13) PHILIPS Philips Fidelio T1 True Wireless Noise Cancelling Headphones
2. Siyuan SY8802
(1) 1MORE ColorBuds True Wireless Bluetooth Headphones
(2) 233621 Zen True Wireless Noise Cancelling Headphones
(4) realme Buds Air Pro true wireless noise-cancelling headphones
(6) TECNO Hipods H2 True Wireless Bluetooth Headset
(8) Motorola MOTO BUDS CHARGE true wireless Bluetooth headset
(2) QCY T13 True Wireless Headphones
(2) MONSTER CLARITY 8.0 ANC true wireless earphones
6. Siyuan SY8821
(1) Fenda Technology E2 True Wireless Bluetooth Headset
(3) Transsion TECNO Buds 2 True Wireless Bluetooth Headphones
(5) noise Air Buds true wireless earphones
7. Siyuan SY8825
(1) BULL Bull TWS Pure Tone Headphones VTA10H
8. Siyuan SY6103
(1) Tezo Nutmeg Light Bean True Wireless Bluetooth Headphones
10. Siyuan SY7636
(1) NetEase Cloud Music Oxygen True Wireless Bluetooth Headset LITE+ Version
(3) LEANTS SPECIAL TWS true wireless Bluetooth headset
12. Siyuan MP3401A
(1) LEANTS SPECIAL TWS true wireless Bluetooth headset
Lithium battery charge management chip


1. Siyuan SY8602
(1) OPPO Enco Free2 True Wireless Noise Cancelling Headphones
(3) OPPO Enco Air2 True Wireless Earphones
2. Siyuan SY5500
(1) Feizhi X1 Gaming Bluetooth Wireless Headset
(3) Soundcore Liberty 3 Pro has a wide and small golden cavity
3. Siyuan SY7618
(1) Sony Ericsson True Wireless Bluetooth Headset T1S
4. Siyuan SY7612
(1) HTC TWS True Wireless Headphones Plus
2. Siyuan SY8702
(1) Baseus Encok WM01 True Wireless Bluetooth Headset
I love audio network summary
Siyuan SY6201 is a new chip with QFN-24 4mm×4mm package, a highly integrated single-cell lithium-ion/lithium-polymer battery switch charging chip with system power path management function, suitable for portable batteries with small size and small charging cut-off current. wearables. Support safe timing during charging and delay timing mode after charging is completed; battery temperature NTC detection, configurable JEITA curve; VSYS overcurrent and short circuit protection, battery overvoltage, input overvoltage, overtemperature protection; charging voltage, current and temperature thresholds I2C programmable; the charging current automatically decreases as the temperature rises, etc.
As of press time, it was learned from the dismantling database of I Love Audio Network that Siyuan's TWS earphone power management chip, lithium battery charging management chip and protection device have been adopted by at least 55 TWS earphone products under 35 brands. One of the TWS earphone power management chips, SY8801, is Siyuan's hot-selling chip and has been adopted by at least 14 TWS earphone products.
Founded in 2011, Siyuan is a national high-tech enterprise and a leading power chip company in the TWS industry. It has been focusing on the design of POWER+ power management system chips for battery applications. Committed to providing leading battery management system-on-chip solutions for smart wear, consumer electronics, industry, new energy vehicles and other industries. Its chip products have repeatedly broken through technical barriers in the market and have had a significant impact on the industry.
Dong Guanbin, the founder of Siyuan, believes that the way out for chip design companies lies in value innovation. We believe that in the future, Siyuan will still be able to lay out its product structure according to market changes and bring innovative products to the market.