TPS51124 - 用于低压系统电源的双路同步步降控制器

TPS51124是TI德州仪器公司的一款控制器（外部开关）产品，TPS51124是用于低压系统电源的双路同步步降控制器，本站介绍了TPS51124的封装应用图解、特点和优点、功能等，并给出了与TPS51124相关的TI元器件型号供参考。

TPS51124 - 用于低压系统电源的双路同步步降控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品特性

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 RDS(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

产品应用

Notebook I/O and Low-Voltage System Bus

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS51124	VQFN (24)	4.00 mm × 4.00 mm

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