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TPS54327DDAR Datasheet(PDF) 7 Page - Texas Instruments |
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TPS54327DDAR Datasheet(HTML) 7 Page - Texas Instruments |
7 / 29 page SW VBST EN VFB GND VO 4 5 6 2 1 7 VIN SS VIN VREG5 EN Logic SW PGND Protection Logic Ref SS UVLO UVLO Softstart SS REF TSD Ref VREG5 8 VIN Ceramic Capacitor 3 SGND SGND PGND PWM + - + OCP + - VREG5 XCON VREG5 Control Logic 1 shot ON TPS54327 www.ti.com SLVSAG1C – DECEMBER 2010 – REVISED DECEMBER 2015 7 Detailed Description 7.1 Overview The TPS54327 device is a 3-A synchronous step-down (buck) converter with two integrated N-channel MOSFETs. It operates using D-CAP2 mode control. The fast transient response of D-CAP2 control reduces the output capacitance required to meet a specific level of performance. Proprietary internal circuitry allows the use of low ESR output capacitors including ceramic and special polymer types. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 PWM Operation The main control loop of the TPS54327 is an adaptive ON-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2 mode control. D-CAP2 mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component count configuration with both low ESR and ceramic output capacitors. It is stable even with virtually no ripple at the output. Copyright © 2010–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TPS54327 |
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