Synchronous Buck Pulse-Width Modulator (PWM) Controller
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Overview
Description
The ISL8104 is a 8V to 14V synchronous PWM controller with integrated MOSFET drivers. The controller features the ability to safely start-up into prebiased output loads and provides protection against overcurrent fault events. Overcurrent protection is implemented using top-side MOSFET rDS(ON) sensing, eliminating the need for a current sensing resistor. The ISL8104 employs voltage-mode control with dual-edge modulation to achieve fast transient response. The operating frequency is adjustable from 50kHz to 1.5MHz with full (0% to 100%) PWM duty cycle capability. The error amplifier features a 15MHz (typ) gain-bandwidth product and 6V/µs slew rate enabling high converter bandwidth. The output voltage of the converter can be regulated to as low as 0.597V with a tolerance of ±1.0% over the commercial temperature range (0°C to +70°C), and ±1.5% over industrial temperature range (-40°C to +85°C). Provided in the QFN package, a SS pin and REFIN pin enable supply sequencing and voltage tracking functionality.
Features
- +8V ±5% to +14V ±10% Bias Voltage Range
- 1.5V to 15.4V Input Voltage Range
- 0.597V Internal Reference Voltage
- ±1.0% Over the Commercial Temperature Range
- ±1.5% Over the Industrial Temperature Range
- Voltage-Mode PWM Control with Dual-Edge Modulation
- 14V High Speed N-Channel MOSFET Gate Drivers
- 2.0A Source/3A Sink at 14V Bottom-Side Gate Drive
- 1.25A Source/2A Sink at 14V Top-Side Gate Drive
- Fast Transient Response
- 15MHz (typ) Gain-Bandwidth Error Amplifier with 6V/µs slew rate
- Full 0% to 100% Duty Cycle Support
- Programmable Operating Frequency from 50kHz to 1.5MHz
- Lossless Programmable Overcurrent Protection
- Top-Side MOSFET's rDS(ON) Sensing
- ~120ns Blanking Time
- Sourcing and Sinking Current Capability
- Support for Start-Up into Prebiased Loads
- Soft-Start Done and an External Reference Pin for Tracking Applications are Available in the QFN Package
- Pb-free available (RoHS compliant)
Applications
Applications
- Test and Measurement Instruments
- Distributed DC/DC Power Architecture
- Industrial Applications
- Telecom/Datacom Applications
Documentation
| Document title | Document type
|
Date Date | |
|---|---|---|---|
| PDF 775 KB | Datasheet | ||
| PDF 509 KB | Application Note | ||
| PDF 397 KB | Application Note | ||
| PDF 603 KB | End Of Life Notice | ||
| PDF 106 KB | Product Advisory | ||
| PDF 363 KB | Product Advisory | ||
| PDF 326 KB | Product Change Notice | ||
| PDF 266 KB | Product Change Notice | ||
| PDF 398 KB | Product Change Notice | ||
| PDF 106 KB | Product Change Notice | ||
| PDF 173 KB | Product Change Notice | ||
| PDF 108 KB | Product Change Notice | ||
| PDF 248 KB | Product Change Notice | ||
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Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| 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 |
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Boards & Kits
Boards & Kits
Synchronous Buck PWM Controller Evaluation Board
The ISL8104EVAL1Z evaluation board highlights the operations of the ISL8104 controller in a DC/DC application. The ISL8104 is a simple single-phase pulse width...
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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 | 1500 | Get Samples, | |
| QFN | Reel | 6000 | ||
| QFN | Reel | 6000 |
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