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TPS40195RGYT Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS40195RGYT Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 44 page 1 2 3 4 EN FB COMP VDD TPS40195 5 6 7 8 ULVO RT ILIM GND 16 15 14 13 HDRV SW BOOT LDRV 12 11 10 9 BP SS_SEL PGOOD SYNC Power Good V OUT UDG-06066 TPS40195 www.ti.com SLUS720E – FEBRUARY 2007 – REVISED JULY 2012 4.5-V TO 20-V SYNCHRONOUS BUCK CONTROLLER WITH SYNCHRONIZATION AND POWER GOOD Check for Samples: TPS40195 1 FEATURES CONTENTS • Input Operating Voltage Range: 4.5 V to 20 V Device Ratings 2 • Output Voltage as Low as 0.591 V ±0.5% Electrical Characteristics 3 • 180° Bi-Directional Out-of-Phase Synchronization Typical Characteristics 5 • Internal 5-V Regulator Terminal Information 10 • High and Low MOSFET Sense Overcurrent Application Information 12 • 100 kHz to 600 kHz Switching Frequency Design Example 21 • Enable and Power Good Additional References 34 • Programmable UVLO and Hysteresis • Thermal Shutdown at 150°C DESCRIPTION • Selectable Soft-Start The TPS40195 is a flexible synchronous buck • Pre-Bias Output Safe controller that operates from a nominal 4.5 V to 20 V supply. This controller implements voltage mode control with the switching frequency adjustable from APPLICATIONS 100 kHz to 600 kHz. Flexible features found on this • Digital TV device include selectable soft-start time, • Entry-Level and Midrange Servers programmable short circuit limit, programmable undervoltage lockout (UVLO) and synchronization • Networking Equipment capability. An adaptive anti-cross conduction scheme • Non-Isolated DC-DC modules is used to prevent shoot through current in the power FETs. Over-current detection is done by sensing the voltage drop across the low-side MOSFET when it is on, and comparing it with a user programmable threshold. SIMPLIFIED APPLICATION DIAGRAM 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2007–2012, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Numéro de pièce similaire - TPS40195RGYT |
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Description similaire - TPS40195RGYT |
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