意法半导体为其新款微处理器推出高度集成的电源管理IC

ST launches highly-integrated power-management IC for its latest microprocessors

意法半导体为其新款微处理器推出高度集成的电源管理IC

The STPMIC25 power-management IC for STM32MP2 microprocessors is now available, with 16 channels to supply all the MPU power rails as well as system peripherals in one convenient package. Completing the hardware design requires only a small number of external components to provide filtering and stabilization and the STEVAL-PMIC25V1 evaluation board is available now to start development immediately.

STM32MP2微处理器的STPMIC25电源管理IC现已上市。该器件具有16个通道，可在便利型封装中为所有MPU电源轨和系统外设供电。STEVAL-PMIC25V1评估板现可立即用于开发项目，只需少量的外部组件来提供滤波和稳定性即可完成硬件设计。

The IC contains seven DC/DC buck converters and eight low-dropout (LDO) regulators, with an additional LDO to provide the reference voltage (Vref) for system DDR3 and DDR4 DRAMs. Among the eight LDOs is a dedicated 3.3V channel to supply USB High-speed and Type-C PHY ICs. There are also general-purpose LDOs that can be assigned to power circuitry such as memory card interfaces and Ethernet ports.

该IC包含七个DC/DC降压转换器和八个低压降 (LDO) 稳压器，此外还有一个额外的LDO为系统DDR3和DDR4 DRAM提供参考电压 (Vref)。八个LDO中有一个专用的3.3V通道，用于提供USB高速和Type-C PHY IC。此外还有通用LDO，可分配给电源电路，如存储卡接口和以太网端口。

The buck converters are optimized to power the MPU’s CPU, core circuitry, GPU, I/O and analog domains, with additional channels for DDR RAM supply and a general-purpose auxiliary output. The converters are designed with fast transient response and low ripple across a wide range of operating conditions, to meet specific demands of the MPU’s power domains. All converters use adaptive constant on-time control for high efficiency, with spread-spectrum frequency modulation and phase-shifted switching with an advanced synchronization technique to minimize EMI. In addition, each converter can operate in high-power or low-power mode, controlled by the application software, allowing the host system to enhance energy savings by minimizing converter quiescent currents. All bucks and LDOs can be enabled and disabled independently.

降压转换器经过优化，可为MPU的CPU、核心电路、GPU、I/O和模拟域供电，并配有额外的DDR RAM电源通道和通用辅助输出。转换器的设计具有快速瞬态响应和低纹波，适用于各种操作条件，以满足MPU电源域的特定需求。所有转换器均采用自适应恒定导通时间控制，以实现高效率，同时搭载扩频频率调制和相移开关，并运用先进的同步技术来减少EMI。此外，每个转换器均可在应用软件控制的高功耗或低功耗模式下运行，使主机系统能够通过减小转换器静态电流来增强节能效果。所有降压和LDO均可独立使能和禁用。

With non-volatile memory (NVM) on-chip and an I2C interface, the STPMIC25 allows flexibility to support a wide range of uses. Settings such as output voltages and power-up and power-down sequencing can be programmed or configured dynamically through software. Safety features including thermal protection and overcurrent protection for each output are built in.

STPMIC25具有片上非易失性存储器 (NVM) 和I2C接口，可灵活支持各类用途。输出电压和上电/下电顺序等设置可通过软件进行动态编程或配置。内置安全功能，包含各输出的热保护和过电流保护。

The STPMIC25 is in production now, packaged in a 6.5mm x 6.5mm 56-lead WFQFN just 0.9mm high, from $3.38 for orders of 1000 pieces. The STEVAL-PMIC25V1 is available in the eStore or through distributors.

STPMIC25现已投入生产，采用6.5mm x 6.5mm 56引脚WFQFN封装（高度仅0.9mm）；千片起订单价3.38美元。STEVAL-PMIC25V1现可从电子商城或分销渠道购买。