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

意法半導(dǎo)體為其新款微處理器推出高度集成的電源管理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微處理器的STPMIC25電源管理IC現(xiàn)已上市。該器件具有16個(gè)通道，可在便利型封裝中為所有MPU電源軌和系統(tǒng)外設(shè)供電。STEVAL-PMIC25V1評(píng)估板現(xiàn)可立即用于開發(fā)項(xiàng)目，只需少量的外部組件來(lái)提供濾波和穩(wěn)定性即可完成硬件設(shè)計(jì)。

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.

該IC包含七個(gè)DC/DC降壓轉(zhuǎn)換器和八個(gè)低壓降 (LDO) 穩(wěn)壓器，此外還有一個(gè)額外的LDO為系統(tǒng)DDR3和DDR4 DRAM提供參考電壓 (Vref)。八個(gè)LDO中有一個(gè)專用的3.3V通道，用于提供USB高速和Type-C PHY IC。此外還有通用LDO，可分配給電源電路，如存儲(chǔ)卡接口和以太網(wǎng)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.

降壓轉(zhuǎn)換器經(jīng)過(guò)優(yōu)化，可為MPU的CPU、核心電路、GPU、I/O和模擬域供電，并配有額外的DDR RAM電源通道和通用輔助輸出。轉(zhuǎn)換器的設(shè)計(jì)具有快速瞬態(tài)響應(yīng)和低紋波，適用于各種操作條件，以滿足MPU電源域的特定需求。所有轉(zhuǎn)換器均采用自適應(yīng)恒定導(dǎo)通時(shí)間控制，以實(shí)現(xiàn)高效率，同時(shí)搭載擴(kuò)頻頻率調(diào)制和相移開關(guān)，并運(yùn)用先進(jìn)的同步技術(shù)來(lái)減少EMI。此外，每個(gè)轉(zhuǎn)換器均可在應(yīng)用軟件控制的高功耗或低功耗模式下運(yùn)行，使主機(jī)系統(tǒng)能夠通過(guò)減小轉(zhuǎn)換器靜態(tài)電流來(lái)增強(qiáng)節(jié)能效果。所有降壓和LDO均可獨(dú)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儲(chǔ)器 (NVM) 和I2C接口，可靈活支持各類用途。輸出電壓和上電/下電順序等設(shè)置可通過(guò)軟件進(jìn)行動(dòng)態(tài)編程或配置。內(nèi)置安全功能，包含各輸出的熱保護(hù)和過(guò)電流保護(hù)。

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現(xiàn)已投入生產(chǎn)，采用6.5mm x 6.5mm 56引腳WFQFN封裝（高度僅0.9mm）；千片起訂單價(jià)3.38美元。STEVAL-PMIC25V1現(xiàn)可從電子商城或分銷渠道購(gòu)買。