TPS40054 Datasheet | Texas Instruments

Features - New products available - LM5145 75-V synchronous buck controller with wide input voltage and duty cycle ranges - LM5146 100-V synchronous buck DC/DC controller with wide duty-cycle range - Operating input voltage 8 V to 40 V - Input voltage feedforward pensation - < 1% internal 0.7-V reference - Programmable fixed-frequency up to 1-MHz voltage mode controller - Internal gate-drive outputs for high-side and synchronous N-channel MOSFETs - 16-pin Power PAD™ package (RθJC = 2°C/W) - Thermal shutdown - Externally synchronizable - Programmable high-side sense short-circuit protection - Programmable closed-loop soft start - TPS40054 source only - TPS40055 source and sink - TPS40057 source and sink with VO prebias 2 Applications - Power modules - Networking and tele - Industrial and servers 3 Description The TPS4005x is a family of high-voltage, wideinput (8 V to 40 V), synchronous, step-down controllers. The TPS4005x family offers design flexibility with a variety of user-programmable functions, including soft start, UVLO, operating frequency, voltage feedforward, high-side current limit, and loop pensation. The TPS4005x uses voltage feedforward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients. Near-constant modulator gain with input variation eases loop pensation. The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation using an internal fault counter for longer duration overloads. The new products, LM5145 and LM5146, offer reduced BOM cost, higher efficiency, and reduced solution size among many other features . Start a WEBENCH® design with LM5145 and LM5146. Part Number TPS40054 TPS40055 TPS40057 Device Information Package(1) Body Size (NOM) HTSSOP (16) 5.00 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. TPS4005x PWP + 1 KFF ILIM 16 VIN ± 2 RT 3 BP5...