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TPS5124

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15V 双通道同步降压 PWM 控制器

产品详情

Vin (min) (V) 4.5 Vin (max) (V) 15 Vout (min) (V) 0.9 Vout (max) (V) 12 Iout (max) (A) 20 Iq (typ) (mA) 1.1 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 2 Number of phases 1 Rating Catalog Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 15 Vout (min) (V) 0.9 Vout (max) (V) 12 Iout (max) (A) 20 Iq (typ) (mA) 1.1 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 2 Number of phases 1 Rating Catalog Type Controller
TSSOP (DBT) 30 49.92 mm² 7.8 x 6.4
  • 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

  • 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

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.

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.

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS5124 Dual Channel Synchronous Step-Down PWM Controller 数据表 2003年 7月 10日
用户指南 TPS5124 降压控制器评估模块用户指南 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 7月 18日
更多文献资料 Исходные проекты ll 2011年 5月 13日

设计和开发

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参考设计

PMP3199 — 用于银箱的同步降压 (3.3V (25A))

此参考评估模块采用 TPS5124,是 PC(台式机)内部 3.3V 和 5V 电源轨的解决方案。
测试报告: PDF
原理图: PDF
封装 引脚 下载
TSSOP (DBT) 30 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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