32-pin (RSJ) package image

UCD7242RSJR 正在供货

数字双通道同步降压功率驱动器

正在供货 custom-reels 定制 可提供定制卷带

定价

数量 价格
+

其他包装数量 | 包装选项 这些产品完全相同,仅包装类型不同

UCD7242RSJT 正在供货 custom-reels 定制 可提供定制卷带
包装数量 | 包装 250 | SMALL T&R
库存
数量 | 价格 1ku | +

质量信息

等级 Catalog
RoHS 豁免
REACH 受影响
引脚镀层/焊球材料 NIPDAU
MSL 等级/回流焊峰值温度 Level-1-260C-UNLIM
质量、可靠性
和封装信息

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
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更多制造信息

包含信息:

  • 制造厂地点
  • 封装厂地点
查看

出口管制分类

*仅供参考

  • 美国 ECCN:EAR99

封装信息

封装 | 引脚 VQFN-HR (RSJ) | 32
工作温度范围 (°C) -40 to 125
包装数量 | 包装 2,500 | LARGE T&R

UCD7242 的特性

  • Fully Integrated Power Switches With Drivers
    for Dual Synchronous Buck Converters
  • Full Compatibility With TI Fusion Digital Power Supply
    Controllers, Such as the UCD92xx Family
  • Wide Input Voltage Range: 4.75 V to 18 V
    Operational Down to 2.2 V Input With an External Bias Supply
  • Up to 10A Output Current per Channel
  • Operational to 2 MHz Switching Frequency
  • High Side Current Limit With Current Limit Flag
  • Onboard Regulated 6 V Driver Supply From VIN
  • Thermal Protection
  • Temperature Sense Output – Voltage Proportional to Chip Temperature
  • UVLO and OVLO Circuits Ensure Proper Drive Voltage
  • Rated From –40°C to 125°C Junction Temperature
  • RoHS Compliant
  • Accurate On-Die Current Sensing (±5%)
  • APPLICATIONS
    • Digitally-Controlled Synchronous-Buck Power Stages
    • High Current Dual-Phase VRM/EVRD Regulators for Desktop, Server, Telecom and
      Notebook Processors

UCD7242 的说明

The UCD7242 is a complete power system ready to drive two independent buck power supplies. High side MOSFETs, low side MOSFETs, drivers, current sensing circuitry and necessary protection functions are all integrated into one monolithic solution to facilitate minimum size and maximum efficiency. Driver circuits provide high charge and discharge current for the high-side NMOS switch and the low-side NMOS synchronous rectifier in a synchronous buck circuit. The MOSFET gates are driven to +6.25 V by an internally regulated VGG supply. The internal VGG regulator can be disabled to permit the user to supply an independent gate drive voltage. This flexibility allows a wide power conversion input voltage range of 2.2V to 18V. Internal under voltage lockout (UVLO) logic ensures VGG is good before allowing chip operation.

The synchronous rectifier enable (SRE) pin controls whether or not the low-side MOSFET is turned on when the PWM signal is low. When SRE is high the part operates in continuous conduction mode for all loads. In this mode the drive logic block uses the PWM signal to control both the high-side and low-side gate drive signals. Dead time is also optimized to prevent cross conduction. When SRE is low, the part operates in discontinuous conduction mode at light loads. In this mode the low-side MOSFET is always held off.

On-board comparators monitor the current through the high side switch to safeguard the power stage from sudden high current loads. Blanking delay is set for the high side comparator to avoid false reports coincident with switching edge noise. In the event of an over-current fault, the high-side FET is turned off and the Fault Flag (FLT) is asserted to alert the controller.

MOSFET current is measured and monitored by a precision integrated current sense element. This method provides an accuracy of ±5% over most of the load range. The amplified signal is available for use by the controller on the IMON pin.

An on-chip temperature sense converts the die temperature to a voltage at the TMON pin for the controller’s use. If the die temperature exceeds 170°C, the temperature sensor initiates a thermal shutdown that halts output switching and sets the FLT flag. Normal operation resumes when the die temperature falls below the thermal hysteresis band.

定价

数量 价格
+

其他包装数量 | 包装选项 这些产品完全相同,仅包装类型不同

UCD7242RSJT 正在供货 custom-reels 定制 可提供定制卷带
包装数量 | 包装 250 | SMALL T&R
库存
数量 | 价格 1ku | +

包装方式

您可以根据器件数量选择不同的包装方式,包括完整卷带、定制卷带、剪切带、管装或托盘。

定制卷带是从整盘卷带上剪下来的具有连续长度的剪切带,是一种可以对特定数量提供产品批次及生产日期跟踪的包装方式。根据行业标准,使用黄铜垫片在剪切带两端各连接一个 18 英寸的引带和尾带,以直接送入自动组装机。涉及定制卷带的 TI 订单将包含卷带费用。

剪切带是从整盘卷带上剪下来的特定长度的编带。根据所申请器件数量的不同,TI 可能会使用多条剪切带或多个盒子进行包装。

TI 通常会根据库存情况选择将管装托盘器件以盒装或者管装或托盘形式发货。所有器件均会按照 TI 内部规定的静电放电和湿敏等级保护要求进行包装。

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可提供批次和生产日期代码选项

您可在购物车中添加器件数量以开始结算流程,并查看现有库存中可选择批次或生产日期代码的选项。

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