TPS59124 Series
3-V to 28-V, dual-synchronous buck controller for low output voltage rails in embedded computing
Manufacturer: Texas Instruments
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Key Features
• High Efficiency, Low-Power Consumption, Shutdowns to <1 µAFixed Frequency Emulated On-Time Control, Frequency Selectable From Three OptionsD-CAP Mode Enables Fast Transient ResponseAuto-Skip ModeLess Than 1% Initial Reference AccuracyLow Output RippleWide Input Voltage Range: 3 V to 28 VOutput Voltage Range: 0.76 V to 5.5 VLow-Side RDS(on)Loss-less Current SensingAdaptive Gate Drivers With Integrated Boost DiodeInternal 1.2-ms Voltage-Servo Soft StartPower-Good Signals for Each Channel With Delay TimerOutput Discharge During Disable, FaultAPPLICATIONSI/O and Low Voltage System Bus in Embedded Computing SystemsHigh Efficiency, Low-Power Consumption, Shutdowns to <1 µAFixed Frequency Emulated On-Time Control, Frequency Selectable From Three OptionsD-CAP Mode Enables Fast Transient ResponseAuto-Skip ModeLess Than 1% Initial Reference AccuracyLow Output RippleWide Input Voltage Range: 3 V to 28 VOutput Voltage Range: 0.76 V to 5.5 VLow-Side RDS(on)Loss-less Current SensingAdaptive Gate Drivers With Integrated Boost DiodeInternal 1.2-ms Voltage-Servo Soft StartPower-Good Signals for Each Channel With Delay TimerOutput Discharge During Disable, FaultAPPLICATIONSI/O and Low Voltage System Bus in Embedded Computing Systems
Description
AI
The TPS59124 is a dual, adaptive on-time D-CAP mode synchronous buck controller. This device enables system designers to cost effectively complete the suite of embedded computer power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed-frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high-efficiency down to milliampere range. The main control loop for the TPS59124 uses the D-CAP mode that optimized for low-ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing. The device provides convenient and efficient operation with supply input voltages (V5IN, V5FILT) ranging from 4.5 V to 5.5 V, conversion voltages (drain voltage for the synchronous high-side MOSFET) from 3 V to 28 V and output voltages from 0.76 V to 5.5 V.
The TPS59124 is available in 24-pin QFN package specified from –40°C to 85°C ambient temperature range.
The TPS59124 is a dual, adaptive on-time D-CAP mode synchronous buck controller. This device enables system designers to cost effectively complete the suite of embedded computer power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed-frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high-efficiency down to milliampere range. The main control loop for the TPS59124 uses the D-CAP mode that optimized for low-ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing. The device provides convenient and efficient operation with supply input voltages (V5IN, V5FILT) ranging from 4.5 V to 5.5 V, conversion voltages (drain voltage for the synchronous high-side MOSFET) from 3 V to 28 V and output voltages from 0.76 V to 5.5 V.
The TPS59124 is available in 24-pin QFN package specified from –40°C to 85°C ambient temperature range.