The RAA210870 is a pin-strap configurable 70A step-down PMBus-compliant DC/DC power supply module that integrates a digital PWM controller, synchronous MOSFETs, power inductor, and passive components. Only input and output capacitors are needed to finish the design. Because of its thermally enhanced HDA packaging technology, the module can deliver up to 70A of continuous output current without the need for airflow or additional heat sinking. The RAA210870 simplifies configuration and control of Renesas digital power technology while offering an upgrade path to full PMBus configuration through the pin-compatible ISL8273M.
Operating over an input voltage range of 4.5V to 14V, the RAA210870 offers adjustable output voltages down to 0.6V and achieves up to 93% conversion efficiencies. A unique ChargeMode™ control architecture provides a single clock cycle response to an output load step and can support switching frequencies up to 1MHz. The power module integrates all power and most passive components and requires only a few external components to operate. A set of external resistors allows the user to easily configure the device for standard operation. A standard PMBus interface addresses fault management, as well as real-time full telemetry and point-of-load monitoring.
A fully customizable voltage, current, and temperature protection scheme ensures safe operation for the RAA210870 under abnormal operating conditions. The device is also supported by the PowerNavigator™ software, a full digital power train development environment. The RAA210870 is available in a low profile compact 18mm x 23mm x 7.5mm fully encapsulated thermally enhanced HDA package.
- 70A single channel output current
- 4.5V to 14V single rail input voltage
- Up to 93% efficiency
- Programmable output voltage
- 0.6V to 2.5V output voltage settings
- ±1.2% accuracy over line, load, and temperature
- ChargeMode control loop architecture
- 296kHz to 1.06MHz fixed switching frequency operations
- No compensation required
- Fast single clock cycle transient response
- PMBus interface and/or pin-strap mode
- Programmable through PMBus
- Pin-strap mode for standard settings
- Real-time telemetry for VIN, VOUT, IOUT, temperature, duty cycle, and fSW
- Complete over/undervoltage, current, and temperature protections with fault logging
- PowerNavigator supported
- Thermally enhanced 18mm x 23mm x 7.5mm HDA package
Design Resources and Tools
Featured White Papers
Industry-Leading 10A and 15A Fully Encapsulated PMBus Power Modules
The ISL828xM hybrid digital and ISL821xM analog power modules feature integrated LDOs that enable single-supply operation. They leverage Renesas’ patented R4™ high-speed control loop architecture with inherent line voltage feed-forward, providing designers a unique combination of ultra-fast load transient response and high noise immunity. Their proprietary Grid HDA package offers unmatched electrical and thermal performance through a single-layer conductive package substrate that efficiently transfers heat from the module to the system board, and dissipates it without requiring airflow or heatsinks – even under heavy load conditions.
Key Features of the Newest Power Module Family
|Load Current (A)||15||10||15||10|
|Minimum VIN (V)||4.5||4.5||4.5||4.5|
|Maximum VIN (V)||16.5||16.5||16.5||16.5|
|Minimum VOUT (V)||0.5||0.5||0.5||0.5|
|Maximum VOUT (V)||5||5||5||5|
|Peak Efficiency (%)||95.2||95.2||95.2||95.2|
|Minimum Switching Frequency (kHz)||255||255||255||255|
|Maximum Switching Frequency (kHz)||1130||1130||1130||1130|