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AC/DC 和 DC/DC 控制器 (外部 FET)

TPS5124

現行

15-V 雙通道同步降壓 PWM 控制器

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產品規格表

TPS5124

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 4.5 Vin (max) (V) 15 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode Voltage mode Topology Buck Rating Catalog Vout (min) (V) 0.9 Vout (max) (V) 12 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Iq (typ) (µA) 1100 Duty cycle (max) (%) 80 Number of phases 1
Vin (min) (V) 4.5 Vin (max) (V) 15 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode Voltage mode Topology Buck Rating Catalog Vout (min) (V) 0.9 Vout (max) (V) 12 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Iq (typ) (µA) 1100 Duty cycle (max) (%) 80 Number of phases 1
  • 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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* Data sheet TPS5124 Dual Channel Synchronous Step-Down PWM Controller datasheet 2003年 7月 10日

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  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

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