TPS61070
TPS61071
SLVS510 鈥?JUNE 2004
www.ti.com
DETAILED DESCRIPTION (continued)
Power-Save Mode
The TPS61070 is capable of operating in two different modes. At light loads, when the inductor current becomes
zero, it automatically enters the power-save mode to improve efficiency. In the power-save mode, the converter
only operates when the output voltage trips below a set threshold voltage. It ramps up the output voltage with
one or several pulses and returns to the power-save mode once the output voltage exceeds the set threshold
voltage. If output power demand increases and the inductor current no longer goes below zero, the device again
enters the fixed PWM mode. In this mode, there is no difference between the PWM only version TPS61071 and
the power-save mode enabled version TPS61070.
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