Overview
Description
The ISL68239 is a digital triple output multiphase (X+Y+Z ≤ 12) PWM controller supporting PMBus v1.3/AVSBus interfaces. The controller can be configured to support any phase assignments up to a maximum of twelve phases across the three outputs (X, Y, and Z). For example, 10+1+1, 10+2, 8+2+1, 1+1, or even single output operation as a 12+0 configuration is supported. Increased power density, combined with support for the PMBus v1.3 interface, allows the device to support any demanding power supply requirement.
Additionally, the ISL68239 with AVSBus complements PMBus by providing a common high-speed interface to accelerate point-to-point communication between the controller and load to statically and dynamically control the processor voltage, delivering a balanced, power-efficient design.
The ISL68239 uses the proprietary Renesas digital synthetic current modulation scheme to achieve the industry-best combination of transient response, ease of tuning, and efficiency across the full load range. Diode emulation and automatic phase add/drop features allow you to extract maximum efficiency from the converter regardless of load conditions. You can use the intuitive PowerNavigator™ software to configure and monitor the device.
With minimal external components, easy configuration, robust fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has never been easier.
Features
- Advanced linear digital modulation scheme
- Auto phase add/drop with PFM mode for excellent load vs efficiency profile
- Dual edge modulation with optional diode braking for faster transient response
- Excellent VOUT transition performance
- Zero latency synthetic current control for excellent high-frequency current balance
- Flexible phase assignment from 0 to 12 phases per output
- Up to 2MHz switching frequency operation for high-density designs
- Differential remote voltage sensing supports ±0.5% closed-loop system accuracy over load, line, and temperature
- Highly accurate current sensing for excellent load-line regulation and accurate OCP
- Supports the full range of Renesas Smart Power Stage (SPS) devices
- Comprehensive fault management enables high-reliability systems
- Pulse-by-pulse (per phase) and total output current limiting
- Black Box status recording capability with first fault indicator
- Intuitive configuration using PowerNavigator™ software
- SMBus/PMBus v1.3 compatible
- Up to 16 user configurations stored in device Non-Volatile Memory (NVM)
Comparison
Applications
Documentation
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| Type | Title | Date |
| Datasheet | PDF 1.91 MB | |
| Product Advisory | PDF 100 KB | |
| Product Change Notice | PDF 132 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Support Communities
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Question about the error of ISL68239
I have a question about the error of ISL68239. Our configuration is the following:ISL68239 PWM0-3 -> ISL99390 x 4 Vout1 PWM4,5 -> ISL99390 x 2 Vout2 PWM6 -> ISL99390 x 1 Vout3 PWM7-11 are unused. Vout1 and Vout2 are outputting normally. But Vout3 is not outputting.The Power Navigation ...
Jun 10, 2025 -
latest PowerNavigator doesn't support ISL68239?
Hello community, I'm using the chip ISL68239. However while I download latest PowerNavigator 5.4.139, I found that ISL68239 isn't supported in the software. So how to use ISL68239 in my design?
May 6, 2023