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TPS5124

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15V 双通道同步降压 PWM 控制器

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TPS5124

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产品详情

Vin (min) (V) 4.5 Vin (max) (V) 15 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Rating Catalog Vout (min) (V) 0.9 Vout (max) (V) 12 Iq (typ) (A) 0.0011 Duty cycle (max) (%) 80
Vin (min) (V) 4.5 Vin (max) (V) 15 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Rating Catalog Vout (min) (V) 0.9 Vout (max) (V) 12 Iq (typ) (A) 0.0011 Duty cycle (max) (%) 80
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

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

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
应遵守 TI 评估类商品的标准条款与条件。

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

支持和培训

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