SW3518S

Dual Ports Fast Charge Application

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

May, 2022 - DS031_v1.6

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9.2. Power Path

The SW3518S supports Type-A+Type-C dual ports output, and each port supports fast charge output.

Type-A port supports QC3.0/QC2.0/AFC/FCP/SCP/PE2.0/PE1.1/SFCP/VOOC fast charge output.

Type-C port supports PPS/ PD3.0/ PD2.0/ QC4+/ QC4/ QC3.0 /QC2.0/ AFC /FCP/ SCP/ PE2.0/ PE1.1/

SFCP fast charge output.

Type-A port turns on and outputs 5V while Type-C port turns off in default mode. When single port

outputs, it supports fast charge output. When dual ports outputs, it supports 5V output and current

limiting for each port.

When load inserts, Type-A port will turn on to power supply extern device. When Single port outputs,

Type-A port will return to default mode and output 5V if light load detection; When dual ports output,

Type-A port will turn off if light load detection. The light load current will be about 15mA.When SINK

is attached, Type-C port will turn on to supply device. When SINK is detached, or light load is detected,

Type-C port will turn off.

9.3. Type C Interface

The SW3518S integrates Type-C logic controller and supports DFP/SOURCE role. When UFP is

attached, Type-C port will automatically turn on to supply device. When UFP is detached, Type-C port

will automatically turn off.

When SINK is attached and Type-C port turns on , the SW3518S will broadcast power level of 3A.

9.4. PD Fast Charge

The SW3518S integrates PPS/PD3.0/PD2.0 fast charge protocol. PPS supports 3.3~21V@3A output

voltage. PD3.0/PD2.0 supports 5V/9V/12V/15V@3A、20V@5A output voltage, and 100W maximum

output power.

9.5. QC Fast Charge

The SW3518S integrates QC4+/QC4/QC3.0/QC2.0 fast charge protocol. It supports Class A/Class B,

while QC2.0 supporting 5V/9V/12V/20V output voltage and QC3.0 supporting 3.6V~20V output

voltage, 200mV/Step.

QC2.0/QC3.0 will output voltage base on DP/DM voltage: