Power Electronics / Power Management


Fully integrated power management IC

25 November 2019 Power Electronics / Power Management

With features including four DC-DC buck converters, a boost DC-DC converter, and six low-dropout regulators (LDOs), the STMicroelectronics STPMIC1 power management IC (PMIC) satisfies the complex power demands of highly integrated application-processor based systems.

The chip is optimised as a companion PMIC for ST’s new STM32MP1 heterogeneous multicore microprocessors, which target a broad range of applications by integrating single or dual Arm Cortex-A7 and Cortex-M4 cores, an optional 3D graphics processing unit, and rich digital and analog peripherals.

More than simply saving board space and BOM cost, compared to arranging the same number of power rails using discrete components, the STPMIC1 also provides power-rail monitoring and protection, handles power-up/down sequencing, and meets the ST32MP1 accuracy and settling-time specifications.

ST authorised partner Octavo Systems has utilised the STM32MP1 and STPMIC1 to create the OSD32MP1x family of microprocessor system-in-package (SiP) devices, which occupy a footprint up to 64% smaller than an equivalent system implemented with discrete components while also addressing engineering challenges such as power sequencing.

In addition to supplying power rails for the microprocessor unit (MPU) and external system components, the STPMIC1 also provides a DDR memory reference voltage, a 500 mA USB OTG power switch, and a general-purpose power switch. An I2C interface and additional pins allow the MPU to manage the PMIC.

The four buck converters in the PMIC are designed for fast transient response and precise output voltage control to handle a wide range of operating conditions. A pulse-frequency modulation mode boosts energy efficiency at low loads. During normal operation, pulse-width modulation (PWM) synchronisation minimises electromagnetic interference (EMI). The boost converter, with bypass-mode capability, can power up to two USB ports and ensures smooth regulation when operating from either a battery or low-cost 5 V AC-DC adapter.

Among the six LDO channels, one is featured for DDR3 termination and can operate in bypass mode for low-power DDR, while another provides automatic source detection to power a USB PHY. The remaining four LDOs are general-purpose outputs.

An evaluation board, STEVAL-PMIC1K1, is also available, which simplifies prototyping with the STPMIC1. The board is easy to use, with pushbuttons and digital I/Os for triggering the PMIC features, and header connectors for accessing the regulators and switches. A USB dongle is also included for configuring the device registers.

The STPMIC1 is in production now and available in a 5 mm x 6 mm x 0,8 mm WFQFN 44-lead package.

For more information contact EBV Electrolink, +27 21 402 1940, capetown@ebv.com, www.ebv.com


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

6U VPX power supply
23 October 2019, Conical Technologies , Power Electronics / Power Management
SynQor announced its new universal 85 to 264 Vrms AC-input VPX power supply for critical military, aerospace and shipboard applications. This 6U VPX power supply, designed to meet VITA 46 standards, allows ...

Read more...
Automotive H-bridge driver
23 October 2019, Altron Arrow , Power Electronics / Power Management
The TLE985x H-bridge MOSFET driver IC product family from Infineon Technologies is an ideal fit for compact and cost-effective motor control solutions. It targets automotive applications such as sunroof, ...

Read more...
Half-bridge driver ICs
25 November 2019, Altron Arrow , Power Electronics / Power Management
The TLE92108 is a family of multi-MOSFET driver ICs introduced by Infineon Technologies, designed to control up to eight half-bridges (up to 16 n-channel MOSFETs) with one packaged device. A 24-bit serial ...

Read more...
Tiny buck-boost converters
25 November 2019, Avnet South Africa , Power Electronics / Power Management
Texas Instruments introduced a family of four high-efficiency, low-quiescent-current (IQ) buck-boost converters that feature tiny packaging with minimal external components for a small solution size. ...

Read more...
NXP further expands LPC5500 MCU family
25 November 2019, EBV Electrolink , DSP, Micros & Memory
NXP Semiconductors announced the availability of its LPC552x/S2x microcontroller (MCU) family, further extending its efficient LPC5500 MCU series with the second of seven families planned for the series. ...

Read more...
Raspberry Pi power management and UPS HAT
25 November 2019, iCorp Technologies , Power Electronics / Power Management
This Raspberry Pi power management and UPS HAT, made by Sixfab, ensures that the device is powered up and that the user has full control over its power supply. The uninterruptible power supply automatically ...

Read more...
STM8 development boards in Nucleo-32 format
25 November 2019, EBV Electrolink , Design Automation
STMicroelectronics is making design starts using 8-bit STM8 microcontrollers (MCUs) faster, more affordable, and more accessible by introducing new development boards in the Nucleo-32 form factor. The ...

Read more...
Military field-grade AC changer
25 November 2019, Conical Technologies , Power Electronics / Power Management
SynQor’s new MAC-4000 is a compact, military field-grade 3-phase to single-phase AC changer. This 4 kW/5 kVA phase/frequency AC changer is designed for the extreme environmental and demanding electrical ...

Read more...
Synchronous step-down regulator
25 November 2019, Altron Arrow , Power Electronics / Power Management
STmicroelectronics’ L6983 is an easy-to-use, synchronous monolithic step-down regulator capable of delivering up to 3 A d.c. to the load. The wide input voltage range makes the device suitable for a broad ...

Read more...
2 W and 3 W DC-DC converters
25 November 2019, Brabek , Power Electronics / Power Management
Recom has extended its range of unregulated DC-DC converters with the RHV2 and RHV3 series which feature ultra-high isolation ratings of 12,5 kV a.c./one minute or 20 kV d.c./one second, in a compact ...

Read more...