Single 12V Input Supply Dual Regulator - Synchronous Rectified Buck PWM and Linear Power Controller
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Overview
Description
The ISL6549 provides the power control and protection for two output voltages in high-performance applications. The dual-output controller drives two N-Channel MOSFETs in a synchronous rectified buck converter topology and one N-Channel MOSFET in a linear configuration. The controller is ideal for applications where regulation of both the processing unit and memory supplies is required. The synchronous rectified buck converter incorporates simple, single feedback loop, voltage-mode control with fast transient response. Both the switching regulator and linear regulator provide a maximum static regulation tolerance of ±1% over line, load, and temperature ranges. Each output is user-adjustable by means of external resistors. An integrated soft-start feature brings both supplies into regulation in a controlled manner. Each output is monitored via the FB pins for undervoltage events. If either output drops below 75% of the nominal output level, both converters are shut off and go into retry mode. The ISL6549 is available in a 14 Ld SOIC package, 16 Ld QSOP, or 16 Ld 4x4 QFN packages.
Features
- Single 12V bias supply (no 5V supply is required)
- Provides two regulated voltages
- One synchronous rectified buck PWM controller
- One linear controller
- Both controllers drive low cost N-Channel MOSFETs
- Small converter size
- Adjustable frequency 150kHz to 1MHz
- Small external component count
- Excellent output voltage regulation
- Both outputs: ±1% over temperature
- 12V down conversion
- PWM and linear output voltage range: down to 0.8V
- Simple single-loop voltage-mode PWM control design
- Fast PWM converter transient response
- High-bandwidth error amplifier
- Undervoltage fault monitoring on both outputs
- Pb-free plus anneal available (RoHS compliant)
Applications
Applications
- Processor and memory supplies
- ASIC power supplies
- Embedded processor and I/O supplies
- DSP supplies
Documentation
| Document title | Document type
|
Date Date | |
|---|---|---|---|
| PDF 884 KB | Datasheet | ||
| PDF 509 KB | Application Note | ||
| PDF 397 KB | Application Note | ||
| PDF 603 KB | End Of Life Notice | ||
| PDF 1.17 MB | End Of Life Notice | ||
| PDF 1.19 MB | Manual - Development Tools | ||
| PDF 293 KB | Other | ||
| PDF 106 KB | Product Advisory | ||
| PDF 202 KB | Product Change Notice | ||
| PDF 326 KB | Product Change Notice | ||
| PDF 266 KB | Product Change Notice | ||
| PDF 268 KB | Product Change Notice | ||
| PDF 207 KB | Product Change Notice | ||
| PDF 108 KB | Product Change Notice | ||
| PDF 295 KB | White Paper | ||
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Design & Development
Software & Tools
Software & Tools
| Software title
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Software type
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Company
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|---|---|---|
| iSim:PE Offline Simulation Tool iSim 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.
|
Simulator | Renesas |
1 item
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Boards & Kits
Boards & Kits
Single 12V Input Supply Dual Regulator Evaluation Board
PCI Express is used in many PCs as the interface to the graphics card. Although the new format allows much higher data rate, one consequence is that 5V is no longer...
Featured Documents:
Single 12V Input Supply Dual Regulator Evaluation Board
PCI Express is used in many PCs as the interface to the graphics card. Although the new format allows much higher data rate, one consequence is that 5V is no longer...
Featured Documents:
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
| SOICN | Tube | 1000 | ||
| SOICN | Reel | 10000 | ||
| QFN | Tube | 750 | ||
| QFN | Reel | 6000 | ||
| QSOP | Tube | 980 | ||
| QSOP | Reel | 2500 |
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