TPS6594-Q1中文资料具有 5 个降压转换器和 4 个 LDO 的汽车类 2.8V 至 5.5V 电源管理 IC (PMIC)数据手册TI规格书

描述 Description

TPS6594-Q1 器件提供五个降压转换器，其中四个是灵活多相可配置降压转换器，每相电流为 3.5A；另一个降压转换器的电流为 2A。

All of the bucks can be synchronized to an internal 2.2 MHz or 4.4 MHz or an external 1 MHz, 2 MHz, or 4 MHz clock signal. An integrated spread-spectrum modulation can be added to the synchronized buck switching clock signal to improve the device’s EMC performance, which can also be made available to external devices through a GPIO output pin. The device provides four LDOs: three with 500 mA capability, which can be configured as load switches; one with 300 mA capability and low-noise performance.

Non-volatile memory (NVM) is used to control the default power sequences and default configurations, such as output voltage and GPIO configurations. The NVM is pre-programmed to allow start-up without external programming. Most static configurations can be changed from the default through SPI or I2C registers to configure the device to meet many different system needs. As a safety feature, the NVM contains a bit-integrity-error detection feature to stop the power-up sequence if an error is detected, preventing the system from starting in an unknown state.

The TPS6594-Q1 includes a 32 kHz crystal oscillator, which generates an accurate 32 kHz clock for the integrated RTC module. A backup-battery management provides power to the crystal oscillator and the RTC module from a coin cell battery or a super-cap in the event of power loss from the main supply.

The TPS6594-Q1 device includes protection and diagnostic mechanisms such as register and interface CRC, short-circuit protection, thermal monitoring, and shutdown. The device also includes a Q&A or trigger mode watchdog to monitor for software lockup, and 2 system error monitoring inputs with fault injection options to monitor the error signals from the attached SoC or MCU. The TPS6594-Q1 can notify the processor of these events through the interrupt handler, allowing the processor to take action in response.

特性 Features

• 符合汽车应用标准
• 器件的输入电源电压范围为 3V 至 5.5V
• 器件 HBM 分类等级 2
• SafeTI 半导体元件
• 可帮助使 ISO 26262 系统设计符合 ASIL D 的文档
• 输入电源监控和过压保护
• 集成式 Q&A 或触发模式看门狗模块
• 具有高温报警和热关断功能的温度监控
• 低功耗
• 仅备用电源模式下的典型值为 7µA
• 五个开关模式电源降压稳压器：
• 一个为 4A，三个为 3.5A，一个为 2A
• 具有短路和过流保护
• 开关频率为 2.2MHz/4.4MHz
• 三个具有可配置旁路模式的低压降 (LDO) 线性稳压器
• 旁路模式下的输出电压范围：1.7V 至 3.3V
• 一个具有低噪声的低压降 (LDO) 线性稳压器
• 300mA 电流，具有短路和过流保护
• 电源序列控制：
• 数字输出信号可添加至电源序列
• 32kHz 晶体振荡器，可输出缓冲式 32kHz 时钟输出
• 具有 一个 SPI 或 两个 I2C 控制接口 ，且第二个 I2C 接口专用于 Q&A 看门狗通信
• 8mm × 8mm 56 引脚 VQFNP，间距为 0.5mm