Datenblatt-Suchmaschine für elektronische Bauteile |
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MP2131 Datenblatt(PDF) 12 Page - Monolithic Power Systems |
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MP2131 Datenblatt(HTML) 12 Page - Monolithic Power Systems |
12 / 16 page MP2131 – 4A, 5.5V, 1.2MHZ SYNCHRONOUS STEP-DOWN SWITCHER MP2131 Rev.1.0 www.MonolithicPower.com 12 5/6/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. to ground by an internal MOSFET. The MOSFET as a maximum Rdson of less than 100 Ω. Current Limit The MP2131 has a typical 7.5 A current limit for the HS-FET and a 3.5 A current limit for the LS- FET. Once the HS-FET hits the current limit, the HS-FET is turned off, and the LS-FET is turned on, reducing the inductor current. The LS-FET is turned off if the current drops to the valley current limit, which turns on the HS- FET. If the HS-FET hits the peak current limit and the LS-FET hits the valley current limit every cycle for 150 µs, the MP2131 will remain at the hiccup threshold until the current decreases. This prevents the inductor current from continuing to build up, which results in damage to the components. Short Circuit and Recovery If the output voltage of the buck converter is shorted to GND, the current limit is triggered. Once the current limit is triggered every cycle for 150 µs, the MP2131 enters hiccup mode; the MP2131 disables the output power stage, discharges the soft-start capacitor, and then automatically tries to soft-start again. If the short-circuit condition still holds after the soft- start ends, the MP2131 repeats this operation cycle until the short circuit is removed, and the output rises back to the regulation level. |
Ähnliche Teilenummer - MP2131 |
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Ähnliche Beschreibung - MP2131 |
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