TPS61000, TPS61001, TPS61002, TPS61003

TPS61004, TPS61005, TPS61006, TPS61007

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SLVS279D – MARCH 2000 – REVISED AUGUST 2015

Feature Description (continued)

The antiringing switch is turned on by a comparator that monitors the voltage between SW and VOUT. This

voltage indicates when the diode is reverse biased. The ringing on the SW-node is damped to a large degree,

reducing the electromagnetic interference generated by the switching regulator to a great extent.

9.3.6 Adjustable Output Voltage (TPS61000 and TPS61007 Only)

The accuracy of the internal voltage reference, the controller topology, and the accuracy of the external resistor

divider determine the accuracy of the adjustable output voltage versions. The reference voltage has an accuracy

of ±4% over line, load, and temperature. The controller switches between fixed frequency and pulse-skip mode,

depending on load current. This adds an offset to the output voltage that is equivalent to 1% of VO. Using 1%

accurate resistors for the feedback divider, a total accuracy of ±6% can be achieved over the complete

temperature and output current range. The TPS61007 is an improved adjustable output voltage version. Ground

shift in the feedback loop was eliminated by adding a separate ground pin for the feedback resistor divider

(FBGND).

9.4 Device Functional Modes

9.4.1 Power Save Mode

The TPS6100x enters a power-save mode, minimizing switching losses of the converter. In this mode, the

controller only switches if the output voltage trips below a set threshold voltage. It ramps up the output voltage

with one or several pulses, and again goes into the power-save mode once the output voltage exceeds the

threshold voltage.

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Product Folder Links: TPS61000 TPS61001 TPS61002 TPS61003 TPS61004 TPS61005 TPS61006 TPS61007