SLUSCE3C October 2015 – August 2020 TPS2549-Q1
PRODUCTION DATA
As previously discussed, the TPS2549-Q1 device integrates an auto-detect state machine that supports all the DCP charging schemes. The auto-detect state machine starts in the Divider3 scheme. However, if a BC1.2 or YD/T 1591-2009 compliant device is attached, the TPS2549-Q1 device responds by turning the power switch back on without output discharge and operating in 1.2-V mode briefly before entering BC1.2 DCP mode. Then the auto-detect state machine stays in that mode until the device releases the data line, in which case the auto-detect state machine goes back to the Divider3 scheme. When a Divider3-compliant device is attached, the TPS2549-Q1 device stays in the Divider3 state.