TPS53125 Series

4.5-V to 24-V, 350 kHz synchronous dual-D-CAP2 buck controller

Catalog

4.5-V to 24-V, 350 kHz synchronous dual-D-CAP2 buck controller

Part	Frequency - Switching	Output Phases	Output Type	Control Features	Output Configuration	Topology	Synchronous Rectifier	Clock Sync	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case	Number of Outputs	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Mounting Type	Function
Texas Instruments TPS53125PW	350 kHz	1	Transistor Driver	Enable	Positive	Buck			85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm	2	24-TSSOP	4.5 V	24 V	Surface Mount	Step-Down
Texas Instruments TPS53125RGET	350 kHz	1	Transistor Driver	Enable	Positive	Buck			85 °C	-40 °C	24-VFQFN Exposed Pad		2	24-VQFN (4x4)	4.5 V	24 V	Surface Mount	Step-Down

Catalog

4.5-V to 24-V, 350 kHz synchronous dual-D-CAP2 buck controller

Key Features

• D-CAP2™ Mode ControlFast Transient ResponseNo External Parts Required for Loop CompensationCompatible With Ceramic Output CapacitorsHigh Initial Reference Accuracy (±1%)Low Output RippleWide Input Voltage Range: 4.5 V to 24 VOutput Voltage Range: 0.76 V to 5.5 VLow-Side RDS(ON)Loss-Less Current SensingAdaptive Gate Drivers with Integrated Boost DiodeAdjustable Soft StartNon-Sinking Pre-Biased Soft Start350-kHz Switching FrequencyCycle-by-Cycle Over-Current Limiting Control30-mV to 300-mV OCP Threshold VoltageThermally Compensated OCP by 4000 ppm/°C at ITRIPAPPLICATIONSPoint-of-Load Regulation in Low Power Systems forWide Range of ApplicationsDigital TV Power SupplyNetworking Home TerminalDigital Set-Top Box (STB)DVD Player/RecorderGaming ConsolesD-CAP2™ Mode ControlFast Transient ResponseNo External Parts Required for Loop CompensationCompatible With Ceramic Output CapacitorsHigh Initial Reference Accuracy (±1%)Low Output RippleWide Input Voltage Range: 4.5 V to 24 VOutput Voltage Range: 0.76 V to 5.5 VLow-Side RDS(ON)Loss-Less Current SensingAdaptive Gate Drivers with Integrated Boost DiodeAdjustable Soft StartNon-Sinking Pre-Biased Soft Start350-kHz Switching FrequencyCycle-by-Cycle Over-Current Limiting Control30-mV to 300-mV OCP Threshold VoltageThermally Compensated OCP by 4000 ppm/°C at ITRIPAPPLICATIONSPoint-of-Load Regulation in Low Power Systems forWide Range of ApplicationsDigital TV Power SupplyNetworking Home TerminalDigital Set-Top Box (STB)DVD Player/RecorderGaming Consoles

Description

The TPS53125 is a dual, adaptive on-time D-CAP2™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of various end equipment’s power bus regulators with a low external component count and low standby consumption. The main control loop for the TPS53125 uses the D-CAP™ Mode topology which provides a very fast transient response with no external component. The TPS53125 also has a proprietary circuit that enables the device to adapt not only low equivalent series resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The part provides a convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to 5.5 V. The TPS53125 is available in 24-pin RGE and PW packages, and is specified from –40°C to 85°C ambient temperature range. The TPS53125 is a dual, adaptive on-time D-CAP2™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of various end equipment’s power bus regulators with a low external component count and low standby consumption. The main control loop for the TPS53125 uses the D-CAP™ Mode topology which provides a very fast transient response with no external component. The TPS53125 also has a proprietary circuit that enables the device to adapt not only low equivalent series resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The part provides a convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to 5.5 V. The TPS53125 is available in 24-pin RGE and PW packages, and is specified from –40°C to 85°C ambient temperature range.