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 and 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




Type Title Date
Brochure PDF 5.49 MB 日本語
End Of Life Notice PDF 215 KB
Manual - Development Tools PDF 257 KB
Manual - Development Tools PDF 1.64 MB
Datasheet PDF 2.63 MB 日本語 , 简体中文
Manual - Hardware PDF 693 KB
Application Note PDF 509 KB
Application Note PDF 397 KB
8 items

Design & Development

Software & Tools

Software & Tools

Software title
Software type
PowerNavigator Software
Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface.
Monitor Debugger/RAM Monitor Renesas
1 item

Software Downloads

Type Title Date
PCB Design Files ZIP 2.44 MB
Software & Tools - Other Log in to Download ZIP 120.25 MB
Software & Tools - Software Log in to Download ZIP 96.49 MB
Library ZIP 54.93 MB
Library ZIP 119.19 MB
Library ZIP 59.25 MB
Library ZIP 435 KB
Library ZIP 1.75 MB
Library ZIP 166 KB
9 items

Boards & Kits

Boards & Kits