SW6206

Bidirectional Fast Charge Power Bank

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

May, 2022 - DS047_v1.5

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The switching charger integrates thermal regulation. When die temperature rises to the charge thermal

regulation threshold, charge current will automatically fall down so the die temperature stops

increasing. If temperature continues rising to thermal shutdown temperature, charger will stop and the

SW6206 powers off.

The switching charger integrates over time protection. When charging remains in trickle charge beyond

the trickle charge over time, tTC_OT, or charging remains in constant current charge beyond the constant

current charge over time, tCC_OT, charger will terminate. Charger will restart only when re-inserting the

adapter.

9.2. Boost Mode

The SW6206 integrates a synchronous boost with output power up to 22.5W 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 supports CC/CV mode. When output current is lower than CC limited current,

output voltage will keep constant. When output current reaches CC limited current, output voltage will

drop to keep output current constant. The CC limited current value is set according to the output voltage.

The higher the output voltage, the lower CC limited current value.

The synchronous boost has battery temperature 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 SW6206 supports Type-A1+Type-A2+Micro-B+Type-C+Lightning. Type-A1 and Type-A2 port