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参数资料
| 型号： | TPS40120PW |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO14 |
| 封装： | GREEN, PLASTIC, TSSOP-14 |
| 文件页数： | 8/13页 |
| 文件大小： | 474K |
| 代理商： | TPS40120PW |
www.ti.com
DETAILED DESCRIPTION
Operation
Dynamic VID
TPS40120
SLUS616B–JULY 2004–REVISED AUGUST 2004
The digitally programmed feedback divider TPS40120 substitutes for a discrete output voltage set-divider and
allows for multiphase PWM controllers such as the TPS4009x, TPS40130 and with internal reference of 0.7 V to
provide voltage identification (VID) feature to power supply designs.
The TPS40120 operates as a resistive divider with constant value of the upper resistor and variable and code
determined value of the lower resistor, refer to the functional block diagram. The VID code truth table is
presented in Table 1.
Most modern processors adjust their core voltage depending on the workload and clock frequency by
commanding voltage identification (VID) codes to the power supply.The power supply reads these VID codes
and adjusts the output voltage in a control manner per processor requirements. To provide safe transition from
one VID code to another (and to ensure that no erroneous output voltage is produced by the power supply), the
TPS40120 VID inputs have internal anti-skew circuit with approximately 500 ns of filtering time. With a rate of
change of 12.5 mV in 5 s, nothing else is required to achieve smooth upward and downward core voltage
transitions. See Figure 1 and Figure 2.
Figure 1. VID Step-Up Transition
Figure 2. VID Step-Down Transition
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40120PWG4 | 功能描述:DC/DC 开关控制器 Progr Feedback Divider RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40120PWR | 功能描述:DC/DC 开关控制器 Progr Feedback Divider RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40120PWRG4 | 功能描述:DC/DC 开关控制器 Progr Feedback Divider RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40-13 | 制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:40 WATT OPEN - FRAME SWITCHING POWER SUPPLY |
| TPS40130 | 制造商:Texas Instruments 功能描述: |
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