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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SIP11205 датащи(PDF) 2 Page - Vishay Siliconix |
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SIP11205 датащи(HTML) 2 Page - Vishay Siliconix |
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2 / 21 page  www.vishay.com 2 Document Number: 69233 S-81795-Rev. C, 04-Aug-08 Vishay Siliconix SiP11205 TECHNICAL DESCRIPTION SiP11205 is a feed-forward controller on the primary side of a half-bridge intermediate bus converter. With 100 V depletion mode MOSFET in the chip, the SiP11205 is capable of being powered directly from the high voltage bus to VCC through an external PNP pass transistor, or may be powered by an external supply directly to the VCC pin. Without the use of an external pass transistor, failure of the converter output to power VCC above the VREG level will result in over temperature protection activating hiccup operation whenever the pre-regulator power dissipation becomes excessive. The external high- and low-side N-Channel power MOSFETs are driven by a built-in driver with ± 1.6 A peak current capability. SiP11205 is available in the MLP44-16 PowerPAK® package and TSSOP-16 PowerPAK® package and is specified over the ambient temperature range of - 40 °C to 85 °C. SIP11205 BLOCK DIAGRAM Level Shift Pre Reg Driver Control OSC PWM Comp + - Hi-side driver Low-side driver OTP VIN VCC ROSC VREF PGND SS Ramp BST DH LX DL UVLO Over Current protection CS + - AGND VINDET VCC 0.13 V COSC IDSS ISS + - 0.85 VSS 1.2 V+V INDET /2 Le Le EN VREF EN EN ISS 250 mV + - IDSS EN IBIAS DMAX COMP RDB VREF IBIAS VSD EN 0.200 V EN VINDET/2 + - VUV VUV BG + SS Comp VREG - |
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