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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT9618GS датащи(PDF) 1 Page - Richtek Technology Corporation |
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RT9618GS датащи(HTML) 1 Page - Richtek Technology Corporation |
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1 / 12 page  RT9618/A 1 DS9618/A-04 March 2007 www.richtek.com Features Drives Two N-Channel MOSFETs Adaptive Shoot-Through Protection Embedded Boot Strapped Diode Support High Switching Frequency Fast Output Rise Time Small SOP-8 Package Tri-State Input for Bridge Shutdown Supply Under Voltage Protection Upper MOSFET Direct Shorted Protection RoHS Compliant and 100% Lead (Pb)-Free Applications Core Voltage Supplies for Desktop, Motherboard CPU High Frequency Low Profile DC-DC Converters High Current Low Voltage DC-DC Converters Synchronous-Rectified Buck MOSFET Drivers General Description The RT9618/A is a high frequency, dual MOSFET driver specifically designed to drive two power N-Channel MOSFETs in a synchronous-rectified buck converter topology. This driver combined with Richtek ’ s series of Multi-Phase Buck PWM controller form a complete core- voltage regulator solution for advanced micro-processors. The RT9618/A drives both the lower/upper gate in a synchronous-rectifier bridge with 12V. This drive-voltage flexibility provides the advantage of optimizing applications involving trade-offs between switching losses and conduction losses. RT9618A has longer UGATE/LGATE deadtime which can drive the MOSFETs with large gate RC value, avoiding the shoot-through phenomenon. RT9618 is targeted to drive low gate RC MOSFETs and performs better efficiency. The output drivers in the RT9618/A can efficiently switch power MOSFETs at frequency up to 500kHz. Switching frequency above 500kHz has to take into account the thermal dissipation of SOP-8 package. RT9618/A is capable to drive a 3nF load with a 30ns rise time. RT9618/ A implements bootstrapping on the upper gate with an external capacitor and an embedded diode. This reduces implementation complexity and allows the use of higher performance, cost effective N-Channel MOSFETs. Adaptive shoot-through protection is integrated to prevent both MOSFETs from conducting simultaneously. Pin Configurations (TOP VIEW) SOP-8 Ordering Information 2 3 4 5 8 7 6 BOOT VCC OD PWM UGATE LGATE PGND PHASE Note : RichTek Pb-free and Green products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100% matte tin (Sn) plating. RT9618/A Package Type S : SOP-8 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) Long Dead Time Short Dead Time |
Аналогичный номер детали - RT9618GS |
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Аналогичное описание - RT9618GS |
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