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标题: 基于TPS65000-Q1的具有双路 LDO 和 SVS 的 2.25MHz 降压转换器 [打印本页]

作者: iczoom188    时间: 2018-12-12 17:12
标题: 基于TPS65000-Q1的具有双路 LDO 和 SVS 的 2.25MHz 降压转换器
基于TPS65000-Q1的具有双路 LDO SVS 2.25MHz 降压转换器
  1 特性
  符合汽车应用 要求
  具有符合 AEC-Q100 标准的下列结果:
  器件温度 2 级:
  环境工作温度范围为 –40°C +105°C
  器件人体放电模式 (HBM) 静电防护 (ESD) 分类等级 H2
  器件组件充电模式 (CDM) ESD 分类等级 C4B
  降压转换器:
  VIN 范围从 2.3V 6V
  用于降低电磁干扰 (EMI) 的展频时钟 (SSC) 系列产品
  2.25MHz 固定频率运行
  600mA 输出电流
  LDO
  VIN 范围从 1.6V 6V
  可调输出电压
  高达 300mA 输出电流
  独立电源输入和使能
  3 mm × 3 mm 16 引脚 WQFN
  2 应用
  汽车摄像头模块
  汽车信息娱乐系统
  汽车仪表盘
  汽车传感器融合
  3 说明
  TPS65000-Q1 器件是一款应用于汽车的单片 电源管理集成电路 (IC)。这个器件包含一个带有两个低压降稳压器的单个降压转换器。为了在最大可能的负载电流范围内实现最大效率,这个降压转换器在轻负载时进入低功耗模式。对于低噪声 应用,该器件可通过 MODE 引脚强制进入固定频率 PWM。此降压转换器允许使用小型电感器和电容器,因此可实现较小的解决方案尺寸。电源正常状态输出可用于排序。LDO 可提供 300mA 的电流,且可在 1.6V 6V 的输入电压范围内工作,因此可从降压转换器提供。该降压转换器和 LDO 具有单独的电压输入和使能端,从而实现了设计和排序的灵活性。
  TPS65000-Q1 采用 16 引脚无引线封装 (3mm x 3mm WQFN)
  The TPS65000-Q1 device provides one step-down converter, two low dropout regulators and spread spectrum clock generation. The device has an input voltage range of
  2.3 V to 6 V. This device is intended for (but not limited to) powering automotive camera modules.
  The output voltage of the step-down converter can be selected through resistor networks on the output. To maximize efficiency, there are two modes of operation based on load conditions: PWM or PFM. By pulling the MODE pin high, forced PWM can be achieved. Pulling this pin low results in an automatic adjustment between PFM and PWM modes.
  The two general-purpose low-dropout regulators each have their own separate enables and voltage inputs. The inputs can be tied to the output of the step-down converter or to a separate voltage source. Resistor networks are required on the output of the regulator to set the output voltage.
  The switching frequency of the step-down converter is handled by the oscillator, with a typical frequency of
  2.25 MHz. The spread spectrum clock (SSC) modulates this frequency when the device is in PWM mode. This additional circuit in the oscillator block reduces power that may cause EMI.
The TPS65000-Q1 device also provides a power good signal to monitor the condition of the DC-DC and both LDOs. The DC-DC and LDOs are only monitored if their enable signal is high. If all enabled resources are in regulation, the pin is pulled low. If one or more of the enabled resources are out of regulation, the pin is placed in Hi-Z .
TI产品现货库存在线购买:https://www.iczoom.com/brand/509-c-1-20.html





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