SLVSDF3F MARCH 2017 – JANUARY 2019 TPSM846C23
The TPSM846C23 device has two onboard linear regulators to provide suitable power for the internal circuitry of the device. Bypass the BP3 and BP6 pins externally for the converter to function properly. The BP3 pin requires a minimum of 2.2 µF of capacitance connected to BP_RTN. The BP6 pin requires a minimum 4.7µF of capacitance connected to BP6_RTN.
The use of the internal regulators to power other circuits is not recommended because the loads placed on the regulators might adversely affect operation of the controller.
Place bypass capacitors as close as possible to the device pins, with a minimum return loop back to ground and the return loop should be kept away from fast switching voltage and main current path. For more information, see the Layout section. Poor bypassing can degrade the performance of the regulator.