Configurable dual-phase PWM buck control ICs

19 September 2007 Power Electronics / Power Management

International Rectifier has introduced two dual-channel synchronous buck control ICs with integrated high performance drivers for medium to high current point-of-load (POL) buck converters used in networking, computing, and communications systems.

The IR3622MPbF and IR3622AMPbF can be configured to support a single output in current share mode, capable of delivering up to 80 A, or to support two independent outputs. The independent channels run 180° out of phase, and reduce the required input capacitance requirement. A significant reduction in output ripple voltage is achieved in single output mode.

The IR3622MPbF targets 12 V single input applications while the IR3622AMPbF can support 5 V and 12 V applications. Key protection features include selectable hiccup or latched current limit, pre-bias start-up, thermal shutdown protection and under- and over-voltage protection.

The devices feature a programmable switching frequency up to 600 kHz to reduce input and output filtering requirements, and minimise the size and number of external filter capacitors and inductors needed. Available in a 32-lead MLPQ package, the new ICs also feature two independently programmable soft-start functions to allow system level sequencing of output voltages in various configurations critical for system level start-up.

The IR3622 family is well suited to multirail applications that require sophisticated power-up and power-down tracking and sequencing of multiple rails by offering a combination of track, sequencing, enable, and 'power good' output features that can be used to trigger a sequential rise of output voltages across multiple POL converters.

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...

---