SW6008

5V/3.1A Type-C Solution Power Bank

Copyright © 2022, ZHUHAI ISMARTWARE TECHNOLOGY CO., LTD.

May, 2022 - DS065_v1.3

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9.2. Boost Mode

The SW6008 integrates a synchronous boost with output current up to 3.1A and efficiency is up to

95%.

The synchronous boost works in PSM/PWM mode. It works in PSM mode when in light load and in

PWM mode in heavy load to make a better efficiency. It will automatically change in these two modes

base on output current.

The synchronous boost has battery temperature regulation and protection. When battery temperature

is abnormal,boost will stop to protect battery. While using a typical NTC thermistor of 103AT, When

battery temperature is higher than 60℃ or lower than -20℃, boost will stop and turn off. When battery

temperature enters into normal range, boost will not automatically restart except a start condition such

as short key or load detect occur. Resisters can be in series or parallel with the NTC thermistor to

change the protection temperature range.

The synchronous boost integrates thermal regulation. When die temperature rises to boost thermal

regulation threshold, output voltage will automatically fall down so as die temperature stop increasing.

If die temperature still rises to thermal shutdown threshold, boost will stop and turn off. When die

temperature falls to thermal shutdown hysteresis, boost will not automatically restart except a start

condition such as short key or load detect occur.

The synchronous boost integrates input under voltage, output over voltage, output overload and short

protection.

9.3. Power Path

The SW6008 supports Type-A+Micro-B+Type-C+Lightning. Type-A and Type-C port supports BC1.2,

and Lightning port supports lightning cable decryption. Besides, DPA2/DATA can be configured to

BC1.2 function of the expanded Type-A port, so to supports Type-A1+Type-A2+Micro-B+Type-C.

When short key occurs or load inserts, Type-A port will turn on to power supply extern device, and

light load detection will turn off Type-A/Type-C port while light load current is about 60mA. When

SOURCE is attached, Type-C port will turn on and charger will automatically turn on to charge battery.

When SINK is attached, Type-C port will turn on and boost will automatically turn on to supply device.

When SINK is unattached, Type-C port will turn off and boost will automatically turn off. Type-C port

also support light load detection. When SINK is light load, Type-C port and boost will turn off to

reduce power consumption.When adapter inserts, Micro-B/Lightning port will turn on and charger will

automatically turn on.

The SW6008 supports charging the battery and supplying extern device simultaneously, and light load

detection for output ports will be disabled at this moment. This function can be disabled if not needing.

The SW6008 supports Type-A/Type-C ports supplying extern devices simultaneously.