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TPS564201

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SLVSDJ7A – MAY 2016 – REVISED MAY 2016

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Copyright © 2016, Texas Instruments Incorporated

Feature Description (continued)

7.3.6 Thermal Shutdown

The device monitors the temperature of itself. If the temperature exceeds the threshold value (typically 172°C),

the device is shut off. This is a non-latch protection.

7.4 Device Functional Modes

7.4.1 Normal Operation

When the input voltage is above the UVLO threshold and the EN voltage is above the enable threshold, the

TPS564201 operates in the normal switching mode. Normal continuous conduction mode (CCM) occurs when

the minimum switch current is above 0 A. In CCM, the TPS564201 operates at a quasi-fixed frequency of 560

kHz.

7.4.2 Eco-mode™ Operation

When the TPS564201 is in the normal CCM operating mode and the switch current falls to 0A, the TPS564201

begins operating in pulse skipping eco-mode. Each switching cycle is followed by a period of energy saving sleep

time. The sleep time ends when the VFB voltage falls below the eco-mode threshold voltage. As the output

current decreases, the perceived time between switching pulses increases.

7.4.3 Standby Operation

When the TPS564201 is operating in either normal CCM or Eco-mode™, it may be placed in standby by

asserting the EN pin low.