久芯网

TPS40090QPWRQ1

  • 描述:输出类别: 脉冲宽度调制信号 拓扑结构: 美元 输出配置: 阳性的 开关频率: 100千赫兹~1.2MHz 供应商设备包装: 24 TSSOP
  • 品牌: 德州仪器 (Texas)
  • 交期:5-7 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

展开

起订量: 1

数量 单价 合计
1+ 40.12566 40.12566
10+ 36.04791 360.47913
25+ 34.08219 852.05475
100+ 29.53799 2953.79950
250+ 28.02307 7005.76750
500+ 25.14517 12572.58800
1000+ 25.00792 25007.92300
2000+ 25.00792 50015.84600
  • 库存: 12000
  • 单价: ¥40.12567
  • 数量:
    - +
  • 总计: ¥40.13
在线询价

温馨提示: 请填写以下信息,以便客户代表及时与您沟通联系。

规格参数

  • 部件状态 可供货
  • 功能 降压
  • 输出配置 阳性的
  • 拓扑结构 美元
  • 时钟同步 Yes
  • 串口 -
  • 安装类别 表面安装
  • 同步整流装置
  • 制造厂商 德州仪器 (Texas)
  • 输出类别 脉冲宽度调制信号
  • 输出数量 four
  • 输出阶段 four
  • 工作温度 -40摄氏度~125摄氏度(TJ)
  • 控制功能特性 电流限制、启用、频率控制、电源良好、软启动
  • 开关频率 100千赫兹~1.2MHz
  • 最大占空比 87.5%
  • 包装/外壳 24-TSSOP(0.173“,4.40毫米宽)
  • 供应商设备包装 24 TSSOP
  • 电源电压 (Vcc/Vdd) 4.5伏~15伏

TPS40090QPWRQ1 产品详情

(1) Patent pending Predictive Gate Drive is a trademark of Texas Instruments.

Description

The TPS40090QPWRQ1 is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.

Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180° out of phase, a three-phase design operates 120° out of phase, and a four-phase design operates 90° out of phase, as shown in Figure 1.

The number of phases is programmed by connecting the deactivated phase PWM output to the output of the internal 5-V LDO. In two-phase operation the even phase outputs should be deactivated.

The TPS40090QPWRQ1 uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed in series with output inductors or, for improved efficiency, by using the DCR (direct current resistance) of the filter inductors. The latter method involves generation of a current proportional signal with an R-C circuit (shown in Figure 11).

The R-C values are selected by matching the time constants of the R-C circuit and the inductor; R-C = L/DCR. With either current sense method, the current signal is amplified and superimposed on the amplified voltage error signal to provide current mode PWM control.

An output voltage droop can be programmed to improve the transient window and reduce size of the output filter. Other features include a single voltage operation, a true differential sense amplifier, a programmable current limit, soft-start, and a power good indicator.

Feature

  • Qualified for Automotive Applications
  • Two-, Three-, or Four-Phase Operation
  • 5-V to 15-V Operating Range
  • Programmable Switching Frequency Up to 1-MHz/Phase
  • Current Mode Control With Forced Current Sharing(1)
  • 1% Internal 0.7-V Reference
  • Resistive Divider Set Output Voltage
  • True Remote Sensing Differential Amplifier
  • Resistive or DCR Current Sensing
  • Current Sense Fault Protection
  • Programmable Load Line
  • Compatible with UCC37222 Predictive Gate Drive? Technology Drivers
  • 24-Pin Space-Saving TSSOP Package
  • Binary Outputs
  • APPLICATIONS
    • Internet Servers
    • Network Equipment
    • Telecommunications Equipment
    • DC Power Distributed Systems

(1) Patent pending Predictive Gate Drive is a trademark of Texas Instruments.

Description

The TPS40090 is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.

Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180° out of phase, a three-phase design operates 120° out of phase, and a four-phase design operates 90° out of phase, as shown in Figure 1.

The number of phases is programmed by connecting the deactivated phase PWM output to the output of the internal 5-V LDO. In two-phase operation the even phase outputs should be deactivated.

The TPS40090 uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed in series with output inductors or, for improved efficiency, by using the DCR (direct current resistance) of the filter inductors. The latter method involves generation of a current proportional signal with an R-C circuit (shown in Figure 11).

The R-C values are selected by matching the time constants of the R-C circuit and the inductor; R-C = L/DCR. With either current sense method, the current signal is amplified and superimposed on the amplified voltage error signal to provide current mode PWM control.

An output voltage droop can be programmed to improve the transient window and reduce size of the output filter. Other features include a single voltage operation, a true differential sense amplifier, a programmable current limit, soft-start, and a power good indicator.

TPS40090QPWRQ1所属分类:DC - DC开关控制器,TPS40090QPWRQ1 由 德州仪器 (Texas) 设计生产,可通过久芯网进行购买。TPS40090QPWRQ1价格参考¥40.125666,你可以下载 TPS40090QPWRQ1中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询TPS40090QPWRQ1规格参数、现货库存、封装信息等信息!

德州仪器 (Texas)

德州仪器 (Texas)

德州仪器公司(TI)是一家开发模拟IC和嵌入式处理器的全球半导体设计和制造公司。通过雇用世界上最聪明的人,TI创造了塑造技术未来的创新。如今,TI正在帮助超过10万名客户改变未来。

会员中心 微信客服
客服
回到顶部