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TPS560200 Datasheet(PDF) 9 Page - Texas Instruments |
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TPS560200 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 22 page 9 TPS560200 www.ti.com SLVSC81C – SEPTEMBER 2013 – REVISED FEBRUARY 2016 Product Folder Links: TPS560200 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated Feature Description (continued) When the overcurrent condition is removed, the output voltage returns to the regulated value. 7.3.6 Thermal Shutdown TPS560200 monitors the temperature of itself. If the temperature exceeds the threshold value (typically 170°C), the device is shut off. This is nonlatch 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 TPS560200 can operate in its normal switching modes. Normal continuous conduction mode (CCM) occurs when the minimum switch current is above 0 A. In CCM, the TPS560200 operates at a quasi-fixed frequency of 600 kHz. 7.4.2 Eco-Mode Operation When the TPS560200 is in the normal CCM operating mode and the switch current falls to 0 A, the TPS560200 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 TPS560200 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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