High-Efficiency, Dual-Channel (5A per Channel), Step-Down DC/DC Converter (Buck)
Jump to Page Section:
Overview
Description
The DA9131 is a high-efficiency, dual-channel, step-down DC/DC (buck) converter with integrated switching FETs delivering 5A per channel. The device can operate at efficiency levels above 90%, reducing the thermal design challenges of powering high current rails in a wide range of high-performance electronic systems.
The DA9131 device has an input voltage range of 2.5V to 5.5V and an output voltage range of 0.3V to 1.9V, making it suitable for a wide variety of low voltage systems. The DA9131 only requires two small 0.10µH inductors, delivering a highly optimized BOM and footprint. Output voltages above 1.9V are supported with an external resistor divider.
The DA9131 device is part of the Renesas family of flexible, scalable, reliable automotive systems and sub-PMICs, enabling an "Exact-Fit" power solution. It is available in a 3.3mm x 4.8mm 24-pin FC-QFN wettable flank package. An automotive-grade version is also available (DA9131-A).
Benefits
- High-efficiency buck converters deliver outstanding thermal performance.
- Fully integrated switching FETs means no external FETs or Schottky diodes are required.
- Remote sensing guarantees the highest accuracy and supports multiple PCB routing scenarios without loss of performance.
- Fully programmable soft-start limits the inrush current from the input to give a slope-controlled output voltage.
- Dynamic voltage control (DVC) enables adaptive adjustment of the device output voltage depending on the load. This increases efficiency when the downstream circuitry enters low power or idle mode, resulting in power savings.
- Configurable GPIOs support a range of features including I2C, DVC and Power-Good indicator.
- Optimized BOM cost and footprint: Each output requires a very small inductor and capacitor delivering parts and cost savings.
- Cycle-by-cycle current limiting for superior overcurrent protection.
Features
- 2.5V to 5.5V input voltage
- 0.3V to 1.9V output voltage
- 4MHz nominal switching frequency
- ±1% accuracy (static)
- ±5% accuracy (dynamic)
- I2C-compatible interface (FM+)
- Programmable GPIOs
- Programmable soft-start
- Voltage, current and temperature supervision
- Key safety features
- Output undervoltage and overvoltage protection
- Input undervoltage protection
- 2-step over-temperature protection
- -40 °C to +85 °C ambient temperature range
Applications
Applications
- Switches and routers
- Smart metering
- Industrial automation
- Wireless
- Consumer products
- SoC/FPGA high-performance processing system requiring efficient, high current, power delivery
Documentation
|
|
Date | |
|---|---|---|
| PDF 844 KB | Datasheet | |
| PDF 5.51 MB 日本語 | Brochure | |
| PDF 439 KB | Application Note | |
| PDF 118 KB | Quick Start Guide | |
| PDF 126 KB | Schematic | |
| PDF 480 KB | Guide | |
6 items
|
||
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| 24-WFQFN | Tray | Get Samples, | |
| 24-WFQFN | Tray | Get Samples, | |
| 24-WFQFN | Tray | Get Samples, | |
| 24-WFQFN | Tape & Reel | Get Samples, | |
| 24-WFQFN | Tape & Reel | Get Samples, | |
| 24-WFQFN | Tape & Reel | Get Samples, |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product
Companion Products
Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| DA9131-XXRT1 | Availability |
| DA9131-XXRT1-A | Availability |
| DA9131-XXRT1-AT | Availability |
| DA9131-XXRT2 | Availability |
| DA9131-XXRT2-A | Availability |
| DA9131-XXRT2-AT | Availability |