Multi-channel PMICs

6 February 2013 Power Electronics / Power Management

ON Semiconductor has introduced two new power management integrated circuits (PMICs) optimised for battery powered systems such as smartphones, tablets, digital cameras, GPS systems and other portable electronics. Utilising the latest power management techniques, the NCP6924 and NCP6914 are designed to optimise system efficiency and save battery life.

The NCP6924 integrates two 800 mA, 3 MHz step-down DC-DC converters and four low-dropout (LDO) voltage regulators for a total quiescent current of just 105 μA. The NCP6914 integrates a single 800 mA, 3 MHz step down converter and four LDO regulators to deliver a low quiescent current of just 72 μA.

Featuring five and six voltage rails, both of these devices are ideally sized to supply power to mixed-signal modules such as cameras, or to complement power distribution to an application processor under minimum supervision.

Programming flexibility is offered through a 400 kHz/3,4 MHz I²C interface which controls power-up sequencing, enables and disables output power, and controls individual active output discharges.

Dynamic voltage scaling of the DC-DC converters allows the system to adjust core or I/O voltages to load profiles when, for instance, the system goes into sleep mode. In addition, the onboard LDO regulators can be directly supplied by one of the integrated DC-DC converters, considerably reducing overall power losses.

The DC-DC converters’ output voltage can be programmed from 0,6 V to 3,3 V in 12,5 mV steps and LDO regulators from 1,0 V to 3,3 V in 50 mV steps. Dedicated pins and registers for power-good and interrupt complete the feature set, providing the necessary supervision to report power failure.

Further reading:

ABB’s Mission to Zero drives South Africa’s energy transition
ABB Electrification Products Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.

Read more...

---

Energy harvesting using a battery-less IoT system
NuVision Electronics Editor's Choice Power Electronics / Power Management
Energy Harvesting plays an essential role in the foundation of ambient IoT, a new generation of ultra-low power connected devices that operate by drawing energy from their environment instead of relying on traditional batteries.

Read more...

---

Driving power, defining performance
Future Electronics Power Electronics / Power Management
Vishay’s portfolio of inductors, current sense resistors, and MOSFETs provides a comprehensive solution for intelligent power management.

Read more...

---

Battery simulator module simplifies BMS testing
Test Dynamics Power Electronics / Power Management
The PXI/PXIe solution from Pickering Interfaces offers a scalable, modular design for faster development cycles, lower total cost of ownership, and improved safety.

Read more...

---

DC PSU: The cornerstone for efficient solar-storage systems
Vepac Electronics Power Electronics / Power Management
PV energy storage systems are evolving and DC power supplies, with their technical characteristics that are naturally compatible with new energy, have become a key carrier for improving system energy efficiency.

Read more...

---

Why local manufacturing, maintenance and support are key to the success of South Africa’s energy future
Power Electronics / Power Management
Although new renewable generation capacity is being developed, the current transmission infrastructure may not fully support the connection of these sources to the national grid or adequately deliver power to areas of high demand.

Read more...

---

Converter power modules for 48 V networks
Altron Arrow Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.

Read more...

---

The importance of power integrity
Spectrum Concepts Power Electronics / Power Management
[Sponsored] Behind every high-speed system lies the need for power integrity. Without it, even the cleanest signal paths become compromised.

Read more...

---

Precise multi-vital sign monitoring
Future Electronics Power Electronics / Power Management
The AS7058 by ams OSRAM is an integrated multi-vital sign monitoring device, which provides a complete photoplethysmogram, electrocardiogram, body impedance sensor, and electrodermal activity sensor.

Read more...

---

Automotive battery diagnostics tester
Comtest Power Electronics / Power Management
Midtronics’ MVT handheld battery tester is a revolutionary tool, powered by MDX-AI, which is set to redefine the standards of battery diagnostics and testing in the automotive industry.

Read more...

---