TPS54495 Series

4.5V to 18V Input, Dual 4A/2A Output, Synchronous Step-Down Converter

Catalog

4.5V to 18V Input, Dual 4A/2A Output, Synchronous Step-Down Converter

Part	Topology	Package / Case	Voltage - Input (Min) [Min]	Voltage - Output (Max) [Max]	Supplier Device Package	Voltage - Input (Max) [Max]	Synchronous Rectifier	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Voltage - Output (Min/Fixed)	Number of Outputs	Output Type	Mounting Type	Current - Output	Function	Frequency - Switching
Texas Instruments TPS54495RSAT	Buck	16-VQFN Exposed Pad	4.5 V	7 V	16-QFN (4x4)	18 V		85 °C	-40 °C	Positive	0.76 V	2	Adjustable	Surface Mount	2 A 4 A	Step-Down	700 kHz
Texas Instruments TPS54495RSAR	Buck	16-VQFN Exposed Pad	4.5 V	7 V	16-QFN (4x4)	18 V		85 °C	-40 °C	Positive	0.76 V	2	Adjustable	Surface Mount	2 A 4 A	Step-Down	700 kHz

Catalog

4.5V to 18V Input, Dual 4A/2A Output, Synchronous Step-Down Converter

Key Features

• D-CAP2 Control ModeFast Transient ResponseNo External Parts Required For LoopCompensationCompatible with Ceramic OutputCapacitorsWide Input Voltage Range : 4.5 V to 18 VOutput Voltage Range: 0.76 V to 7 VHighly Efficient Integrated FETs Optimizedfor Low Duty Cycle Applications90 mΩ (High Side) and 60 mΩ(Low Side)High Initial Reference AccuracySupports Constant 4 A CH1 and 2 A CH2 LoadCurrentLow-Side rDS(on)Loss-Less CurrentSensingAdjustable Soft StartNon-Sinking Pre-Biased Soft Start700 kHz Switching FrequencyCycle-by-Cycle Over-Current Limit ControlOCL/UVLO/TSD ProtectionsHiccup Timer for Overload ProtectionAdaptive Gate Drivers with IntegratedBoost PMOS SwitchOCP Constant Due To Thermally CompensatedrDS(on)with 4000ppm/°C16-Pin HTSSOP, 16-Pin VQFNAuto-Skip Eco-mode　for High Efficiency at Light LoadD-CAP2 Control ModeFast Transient ResponseNo External Parts Required For LoopCompensationCompatible with Ceramic OutputCapacitorsWide Input Voltage Range : 4.5 V to 18 VOutput Voltage Range: 0.76 V to 7 VHighly Efficient Integrated FETs Optimizedfor Low Duty Cycle Applications90 mΩ (High Side) and 60 mΩ(Low Side)High Initial Reference AccuracySupports Constant 4 A CH1 and 2 A CH2 LoadCurrentLow-Side rDS(on)Loss-Less CurrentSensingAdjustable Soft StartNon-Sinking Pre-Biased Soft Start700 kHz Switching FrequencyCycle-by-Cycle Over-Current Limit ControlOCL/UVLO/TSD ProtectionsHiccup Timer for Overload ProtectionAdaptive Gate Drivers with IntegratedBoost PMOS SwitchOCP Constant Due To Thermally CompensatedrDS(on)with 4000ppm/°C16-Pin HTSSOP, 16-Pin VQFNAuto-Skip Eco-mode　for High Efficiency at Light Load

Description

The TPS54495 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54495 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54495 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54495 to maintain high efficiency during lighter load conditions. The TPS54495 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V. The TPS54495 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) package and 4 mm x 4 mm 16-pin VQFN (RSA), and is designed to operate for an ambient temperature range from –40°C to 85°C. The TPS54495 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54495 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54495 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54495 to maintain high efficiency during lighter load conditions. The TPS54495 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V. The TPS54495 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) package and 4 mm x 4 mm 16-pin VQFN (RSA), and is designed to operate for an ambient temperature range from –40°C to 85°C.