TPS54327

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SLVSAG1C – DECEMBER 2010 – REVISED DECEMBER 2015

Feature Description (continued)

7.3.5 UVLO Protection

than UVLO threshold voltage, the TPS54327 is shut off. This is protection is non-latching.

7.3.6 Thermal Shutdown

TPS54327 monitors the temperature of itself. If the temperature exceeds the threshold value (typically 165°C),

the device is shut off. This is 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

TPS54327 device operates in normal switching mode. Normal continuous conduction mode(CCM) occurs when

the minimum switch current is above 0 A. In CM, the TPS54327 device operates at a quasi-fixed frequency of

650 kHz.

7.4.2 Forced CCM Operation

When the TPS54327 device is in normal CCM operating mode and switch current falls below 0 A, the device

begins operating in forced CCM.

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