TPS51124

ACTIVO

Controlador reductor síncrono doble de 3 V a 28 V para carriles de tensión baja de salida

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Hoja de datos

document-pdfAcrobat TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails datasheet (Rev. C) (Inglés) PDF | HTML

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TPS51124

ACTIVO

Hoja de datos

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Detalles del producto

Rating

Catalog

Topology

Buck

Iout (max) (A)

15

Vin (max) (V)

28

Vin (min) (V)

3

Vout (max) (V)

5.5

Vout (min) (V)

0.76

Control mode

D-CAP

Features

Enable, Light-load efficiency, Power good, Synchronous rectification

Duty cycle (max) (%)

88

Iq (typ) (A)

0.00035

Number of phases

1

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Topology

Buck

Iout (max) (A)

15

Vin (max) (V)

28

Vin (min) (V)

3

Vout (max) (V)

5.5

Vout (min) (V)

0.76

Control mode

D-CAP

Features

Enable, Light-load efficiency, Power good, Synchronous rectification

Duty cycle (max) (%)

88

Iq (typ) (A)

0.00035

Number of phases

1

Operating temperature range (°C)

-40 to 85

VQFN (RGE)

24

16 mm² (4 mm × 4 mm)

High Efficiency, Low-Power Consumption, Shutdowns to <1 µA
Fixed Frequency Emulated On-Time Control, Frequency Selectable
From Three Options
D-CAP Mode Enables Fast Transient Response
Auto-Skip Mode
Less Than 1% Initial Reference Accuracy
Low Output Ripple
Wide Input Voltage Range: 3 V to 28 V
Output Voltage Range: 0.76 V to 5.5 V
Low-Side R_DS(ON) Loss-less Current Sensing
Adaptive Gate Drivers With Integrated Boost Diode
Internal 1.2-ms Voltage-Servo Soft-Start
Powergood Signals for Each Channel With Delay Timer
Output Discharge During Disable, Fault
APPLICATIONS
- Notebook I/O and Low-Voltage System Bus

All other trademarks are the property of their respective owners

High Efficiency, Low-Power Consumption, Shutdowns to <1 µA
Fixed Frequency Emulated On-Time Control, Frequency Selectable
From Three Options
D-CAP Mode Enables Fast Transient Response
Auto-Skip Mode
Less Than 1% Initial Reference Accuracy
Low Output Ripple
Wide Input Voltage Range: 3 V to 28 V
Output Voltage Range: 0.76 V to 5.5 V
Low-Side R_DS(ON) Loss-less Current Sensing
Adaptive Gate Drivers With Integrated Boost Diode
Internal 1.2-ms Voltage-Servo Soft-Start
Powergood Signals for Each Channel With Delay Timer
Output Discharge During Disable, Fault
APPLICATIONS
- Notebook I/O and Low-Voltage System Bus

All other trademarks are the property of their respective owners

The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook 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 TPS51124 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 part provides a 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 TPS51124 is available in 24-pin VQFN package specified from –40°C to 85°C ambient temperature range.

The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook 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 TPS51124 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 part provides a 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 TPS51124 is available in 24-pin VQFN package specified from –40°C to 85°C ambient temperature range.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails datasheet (Rev. C)	PDF \| HTML	31/12/2014
	Guía del usuario	TPS51124 Buck Controller Evaluation Module User's Guide (Rev. B)	PDF \| HTML	3/03/2022
	Nota sobre la aplicación	Intel Core i3, i5, i7 [Arrandale] Reference Design		21/07/2010
	Nota sobre la aplicación	Adaptive Constant On-Time (D-CAPTM) Control Study in Notebook Applications (Rev. B)		4/12/2007

Diseño y desarrollo

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