4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision RDS(ON) or DCR Differential Current Sensing
Jump to Page Section:
Overview
Description
The ISL6306 controls microprocessor core voltage regulation by driving up to 4 synchronous-rectified buck channels in parallel. Multiphase buck converter architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple currents. Lower ripple results in fewer components, lower component cost, reduced power dissipation, and smaller implementation area. Microprocessor loads can generate load transients with extremely fast edge rates. The ISL6306 features a high bandwidth control loop and ripple frequencies up to >4MHz to provide optimal response to the transients. today's microprocessors require a tightly regulated output voltage position versus load current (droop). The ISL6306 senses current by utilizing patented techniques to measure the voltage across the on resistance, rDS(ON), of the lower MOSFETs or DCR of the output inductor during the lower MOSFET conduction intervals. Current sensing provides the needed signals for precision droop, channel-current balancing, and overcurrent protection. A programmable internal temperature compensation function is implemented to effectively compensate for the temperature coefficient of the current sense element. A unity gain, differential amplifier is provided for remote voltage sensing. Any potential difference between remote and local grounds can be completely eliminated using the remotesense amplifier. Eliminating ground differences improves regulation and protection accuracy. The threshold-sensitive enable input is available to accurately coordinate the start up of the ISL6306 with any other voltage rail. Dynamic-VID™ technology allows seamless on-the-fly VID changes. The offset pin allows accurate voltage offset settings that are independent of VID setting.
Features
- Precision Multiphase Core Voltage Regulation
- Differential Remote Voltage Sensing
- ±0.5% System Accuracy Over Life, Load, Line and Temperature
- Adjustable Precision Reference-Voltage Offset
- Precision rDS(ON) or DCR Current Sensing
- Accurate Load-Line Programming
- Accurate Channel-Current Balancing
- Differential Current Sense
- Microprocessor Voltage Identification Input
- Dynamic VID™ Technology
- 8-Bit VID Input with Selectable VR11 Code and Extended VR10 Code at 6.25mV per Bit
- 0.5V to 1.6V Operation Range
- Thermal Monitoring
- Integrated Programmable Temperature Compensation
- Threshold-Sensitive Enable Function for Power Sequencing and VTT Enable
- Overcurrent Protection
- Overvoltage Protection
- 2-, 3- or 4-Phase Operation
- Adjustable Switching Frequency Up to 1MHz Per Phase
- Package Option
- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Product Outline
- QFN Near Chip Scale Package Footprint; Improves PCB Efficiency, Thinner in Profile
- Pb-Free (RoHS Compliant)
Documentation
| Title | Type | Date | |
|---|---|---|---|
PDF1.68 MB
|
Datasheet
|
||
PDF509 KB
|
Application Note
|
||
PDF397 KB
|
Application Note
|
||
PDF603 KB
|
End Of Life Notice
|
||
PDF388 KB
|
End Of Life Notice
|
||
PDF326 KB
|
Product Change Notice
|
||
PDF398 KB
|
Product Change Notice
|
||
PDF151 KB
|
Product Change Notice
|
||
PDF222 KB
|
Product Change Notice
|
||
PDF106 KB
|
Product Change Notice
|
||
PDF173 KB
|
Product Change Notice
|
||
PDF248 KB
|
Product Change Notice
|
||
SXSCH373 KB
|
Schematic
|
Design & Development
Software & Tools
Software & Tools
| iSim:PE Offline Simulation TooliSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.Downloads: | Simulator | Renesas |
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.
Product Options
Processing table
| QFN | Tube | 500 | ||
| QFN | Reel | 4000 | ||
| QFN | Reel | 1000 | ||
| QFN | Tube | 500 | ||
| QFN | Reel | 4000 |
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