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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L6722 датащи(PDF) 1 Page - STMicroelectronics |
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L6722 датащи(HTML) 1 Page - STMicroelectronics |
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1 / 34 page  May 2006 Rev 1 1/34 34 L6722 3 Phase controller for DC/DC converters Features ■ 2A integrated gate drivers ■ 0.8V reference ■ 1% output voltage accuracy ■ Adjustable reference offset ■ Precise current sharing and OCP across LS MOSFETS ■ Constant over current protection ■ Feedback disconnection ■ LSLESS allows managing pre-bias startup ■ Preliminary of protection ■ Oscillator internally fixed at 100kHz, externally adjustable ■ Power good ■ Integrated remote sense buffer ■ VFQFPN36 package with exposed pad Applications ■ Memory supply for server and workstation MBs ■ High density DC / DC converters ■ High current pol Description L6722 implements a three-phase step-down controller with 120º phase-shift between each phase with integrated high-current drivers in a compact VFQFPN36 package with exposed pad. L6722 manages output voltages down to 0.8V with ±1% output voltage accuracy over line and temperature variations. Additional programmable offset can be added to the reference voltage with a single external resistor in order to perform margining tests. The controller assures fast protection against load over current and over / under voltage. In case of over-current the system works in Constant Current mode until UVP. Preliminary OVP allows full load protection in case of startup with failed HS. Feedback-disconnection protection prevents from damaging the load in case of misconnections in the remote sense. Pre-bias start-up is also managed thanks to LSLESS. Combined use of DCR and RdsON current sensing assures precision in voltage positioning (by reading droop current across inductors DCR) and safe current sharing and OCP per each phase (by reading the current across LS RdsON). Droop function can be anyway disabled to perform precise and load-insensitive regulation. VFQFPN36 www.st.com Order codes Part number Package Packing L6722 VFQFPN36 Tube L6722TR VFQFPN36 Tape & Reel |
Аналогичный номер детали - L6722 |
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Аналогичное описание - L6722 |
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