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TPS564201 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS564201 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 25 page 11 TPS564201 www.ti.com SLVSDJ7A – MAY 2016 – REVISED MAY 2016 Product Folder Links: TPS564201 Submit Documentation Feedback 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. |
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