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Farnell extends Nordic Semiconductor offering with its first PMIC

Fri, Aug 20, 2021

The first power management IC (PMIC) from Nordic Semiconductor, the nPM1100, is now available from Farnell. Claimed to be the industry’s most compact PMIC, it is intended for wearable electronics, remote controls, personal medical devices and smart home sensors.

The nPM1100 can be used as a generic PMIC for any application using rechargeable Li-ion/Li-Po batteries, advised Farnell. PCB space requirements are as low as 23mm², makes it particularly well suited to be integrated into wearables, connected medical devices and projects which have limited space. No configuration software is required to operate as all settings are pin-configurable. It can be used to conserve energy in designs, and can charge small batteries while providing efficient power management in

The nPM1100-CAAA is a small form factor dedicated PMIC with a dual-mode configurable buck regulator and integrated battery charger. It is a complementary component to Nordic’s SoCs and also has over-voltage protection, low current mode and an operating range of -40 to +85 degrees C.

Farnell also offers the nPM1100 evaluation kit which does not require software to operate and is performance optimised for the PMIC with electrical connectors and physical interfaces for operation. It features switches for all selectable settings, buttons to enter and exit ship mode and connectors for batteries, USB and headers for all pins on the PMIC. The kit may be used with other development kits such as Nordic’s nRF5340-DK or it can be used to test the PMIC’s functionality with non-Nordic products. The kit also includes indicator LEDs for charge and error indication.

Nordic Semiconductor specialises in low power wireless technology with Bluetooth Low Energy solutions, complemented by ANT+, Bluetooth mesh, Thread, and Zigbee products.

Lee Turner, global head of semiconductors and single board computing at Farnell said: “We are pleased to expand our PMIC range with the latest products from Nordic Semiconductor. The . . . nPM1100 is an ideal solution to help our customers reduce energy consumption in their designs. The ability to charge small batteries and extend battery life while providing efficient power management within small, space constrained applications, such as wearables and connected medical devices, is now of critical importance.”

http://www.farnell.com

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Rutronik adds Nordic Semiconductor’s PMIC

Tue, Jul 27, 2021

Offering efficient reliability in confined spaces, the Nordic nPM1100 is a dedicated power management IC (PMIC) with configurable dual-mode buck regulator and integrated battery charger. It is designed as a complementary component to Nordic‘s nRF52 and nRF53 series of SoCs and to ensure reliable power supply and stable operation while maximising battery life through high efficiency and low quiescent currents. It can also be used as a generic PMIC device, says Rutronik, which has added the nPM1100 to its portfolio.

The compact (2.075 x 2.075 mm) WLCSP package can be used in wearable devices, connected medical devices, smart home sensors and controls, remote controls and game controllers, and other size constrained applications, advises Rutronik.

The integrated battery charger is designed to charge lithium-ion and lithium-polymer batteries to a selectable termination voltage of 4.1 or 4.2V and supports cell chemistries with a nominal voltage of 3.6 or 3.7V respectively. The PMICe features thermal battery protection and automatic selection of three charging modes: automatic trickle charge, constant current and constant voltage.

The maximum charging current can be selected via a resistor from 20 up to 400mA. The charger also has a discharge current limiter and is JEITA-compliant.

The high-efficiency step-down regulator can deliver up to 150mA of current at a selectable output voltage of 1.8, 2.1, 2.7 or 3.0V. It features soft start and automatic transition between hysteresis and PWM modes. It also enables a forced PWM mode to ensure clean operation.

The nPM1100 has a low quiescent current, 700nA typical, 470nA in ship mode (deactivates the current output) and 150mA current limit. The PMIC also has over-voltage protection and USB port detection for SDP, CDP and DCP. There is also a driver for charging and error indication LED and the nPM1100 evaluation kit.

http://www.rutronik24.com

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Compact battery chargers are dedicated to charging in tight spaces

Wed, Jul 07, 2021

As wearable, medical and smart sensor products use streamlined power management for energy harvesting hardware, e-peas has developed a family of battery charger devices, dedicated to charging. The company’s existing power management ICs (PMICs) offer direct power delivery to the application, as well as the charging of energy storage elements (such as Li-Ion batteries or super capacitors), but the AEM10900, AEM10300 and AEM30300 are fully dedicated to the charging function. This allows them to be used where a simpler implementation can be used and where there are space or cost constraints.

The PMICs achieve zero quiescent current draw from the battery. In other words, if energy harvesting stops for a prolonged period of time, the energy stored into the battery will not be wasted supplying the PMIC.

Working in conjunction with a single-cell photovoltaic panel, the integrated AEM10900 PMIC boost converter is optimised for solar-based energy harvesting implementations. It has a fast maximum power point tracking (MPPT) functionality designed for objects in movement. This allows the device to get the most energy from the ambient illumination available, storing as much as possible. It also has a 250mV cold start capability, which means it can commence with charging the battery even when light intensities are very low. AEM10900 introduces an I²C interface to minimise the pin count and to offer a larger set of potential configurations. The PMIC includes battery thermal protection, a joule counter to let the user know the amount of energy harvested, and a shipping mode in which the battery cannot be charged. The AEM10900 is suitable for wearable consumer products and body-worn medical monitoring equipment.

The AEM10300 and AEM30300 PMICs both have built-in low power DC/DC converters supporting operation over an input voltage range of 100mV to 4.5V. Adaptive energy management permits these devices to automatically switch between boost, buck-boost and buck operational configurations as deemed appropriate. This ensures that optimal energy transfer is always maintained between the respective inputs and the storage element.

The AEM10900, AEM10300 and AEM30300 battery chargers PMICs only require three external components, advises e-peas, for energy harvesting to be added while keeping the bill of materials costs low and taking up very little board space.

Geoffroy Gosset, CEO and co-founder of e-peas said: “Following on from in-depth consultations with our customer base, it became clear that having compact solutions for charging only was going to be of real value.”

The AEM10300 and AEM30300 PMICs are supplied in a 28-pin QFN package format, measuring 4.0 x 4.0mm and the AEM10900 is available in either the 28-pin QFN package or a 16-pin WLCSP (with 2.0 x 2.0mm dimensions).

http://www.e-peas.com

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Nordic introduces first PMIC for tight spaces

Fri, May 28, 2021

Nordic Semiconductor’s first power management device is the nPM1100, a power management integrated circuit (PMIC). It combines a USB compatible Li-ion/Li-Po battery charger and DC/DC buck regulator in a compact WLCSP for space-constrained applications.

The low IQ PMIC for the company’s nRF52/nRF53 series SoCs and other compatible devices. The 400mA battery charger and 150mA DC/DC step down regulator is integrated with a USB-compatible input regulator with overvoltage protection in a WLCSP which measures 2.075 x 2.075mm. The PMIC ensures reliable power supply and stable operation for the nRF52 and nRF53 series multi-protocol SoCs and maximises the application battery life, says Nordic. It can be used as a generic PMIC for any application using rechargeable Lithium Ion or Lithium Polymer batteries. Its form factor makes it suitable for wearables, connected medical devices, and other space-constrained applications.

The nPM1100’s battery charger can bypass the first regulator stage of Bluetooth Low Energy (BLE) applications based on nRF52 and nRF53 SoCs. In this configuration the buck regulator’s high efficiency reduces overall system power consumption while its 150mA current capability increases the current available for other system components from approximately 10 to 100mA.

The nPM1100 features a low quiescent current (IQ) of 700nA (typicall) which can be further reduced to 470nA in “ship mode” (i.e disabling the power output, removing the need for an external power switch), which minimises battery lifetime impact on products in transit. The power management solution takes up as little as 23mm² of PCB area, including passive components (rising to 27mm² when optimised for performance).

The nPM1100 input regulator draws its power from either a 4.1 to 6.6V USB input or from a 2.3 to 4.35V connected battery input. It can supply a 3.0 to 5.5V unregulated voltage to the application at up to 500mA output current. The PMIC supports USB standard downstream port (SDP), charging downstream port (CDP) and dedicated charger port (DCP) detection. The input regulator includes over-voltage protection for transient voltage spikes up to 20V.

The battery charger is JEITA-compliant and will charge the application’s Li-ion/Li-Po battery with a resistor-selectable charge current from 20 to 400mA and a selectable termination voltage of 4.1 or 4.2V. The charger includes battery thermal protection and automatic selection from three charging modes: automatic trickle, constant current and constant voltage. The charger also features a discharge current limitation.

The DC/DC buck voltage regulator runs at more than 90 per cent efficiency down to below 100 microA load current. It takes its power from the input system regulator and provides up to 150mA current at a selectable 1.8, 2.0, 2.7 or 3.0V regulated output voltage. The regulator features soft start up and automatic transition between hysteretic and pulse width modulation (PWM) modes. It also supports a forced PWM mode for clean power operation.

No configuration software is required as all settings are pin configurable. The PMIC is compatible with all devices designed to operate within the output voltages and supply currents the chip can deliver. The product’s operating temperature range is -40 to 85 degrees C.

Nordic also offers the nPM1100 evaluation kit with switches for all selectable settings, buttons to enter and exit ship mode and connectors for batteries, USB and headers for all pins on the PMIC. It can be powered by USB via the on-board micro-USB port, from an external DC power supply through header pins or from battery power via the battery connectors on one of the headers.

http://www.nordicsemi.com

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Farnell extends Nordic Semiconductor offering with its first PMIC

Rutronik adds Nordic Semiconductor’s PMIC

Compact battery chargers are dedicated to charging in tight spaces

Nordic introduces first PMIC for tight spaces

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