JAJSHS0C March 2019 – March 2021 TPS92682-Q1
PRODUCTION DATA
The TPS92682-Q1 device can be programmed in two-phase mode by setting the 2PH bit to "1" in CFG1 Register. In two-phase mode, the CH1_comp is internally connected to the CH2_comp with 500 Ω (max) of resistance. In this case, the error amplifier of channel-2 is disabled and only the error amplifier of channel-1 connects to both COMP1 and COMP2 pins. TI recommends that external compensators be connected to both COMP1 and COMP2 pins, and that these two pins be shorted together externally.
Two-phase mode uses only the channel-1 soft-start DAC and controls both phases. To generate the channel clocks, only the division factor for the channel-1, programmed in SWDIV Register, is used. The two channel clocks (switching frequency fSW) are the same and are 180° out-of-phase.
In two-phase mode, in the case of internal PWM, only CH1PWM is used for both channels. When external PWM is used, it is recommended to short both PWMx pins together and use only one PWM signal for both channels.
A selected number of the faults (CH2_OV, CH2_UV, CH2_OC, and CH2_UC) have no effect in the operation of two-phase mode. For more detail about faults and diagnostics in TPS92682-Q1, refer to Faults and Diagnostics section.