TPS5124 - TPS5124 双通道同步步降 PWM 控制器

TPS5124是TI德州仪器公司的一款控制器（外部开关）产品，TPS5124是TPS5124 双通道同步步降 PWM 控制器，本站介绍了TPS5124的封装应用图解、特点和优点、功能等，并给出了与TPS5124相关的TI元器件型号供参考。

TPS5124 - TPS5124 双通道同步步降 PWM 控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS5124 is dual independent high efficiency synchronous step-down controller. It supports a low-voltage/high-current power supply applications that use either a 5-V or 12-V bus voltage. Since both controllers of the TPS5124 operate 180 degree out-of-phase, the input current ripple is minimized resulting in a smaller input capacitance and reduced power supply cost.

The current protection circuit detects the drain-to-source voltage drop across the high-side and low-side power MOSFET while it is conducting. Also, the current protection circuit has a temperature coefficient to compensate for the RDS(on) variation of the MOSFET. This resistor-less current protection and built-in boost diode simplify the system design and reduces the external parts count. Other features such as undervoltage lockout, overvoltage, undervoltage, and programmable short-circuit protection promote system reliability.

产品特性

High Efficiency – No Current Sense Resistor Required, RDS(on) Overcurrent Detection with Temperature Compensation
Adjustable Output Voltage Down to 0.9 V
Voltage-Mode PWM Control: Maximum 500-kHz Operation
180° Out-of-Phase Control
Individual Standby and Soft-Start for Each Channel - Easy Power Sequencing
Overvoltage and Undervoltage Protection
Built-In Boot-Strap Diode
Built-In 5-V Linear Regulator
Accurate ± 1% 0.85-V Reference
APPLICATIONS
- Consumer Game Systems
- DSP Applications
- Digital Set-Top Box
- VGA and Sound Cards

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