Digital Triple Output, 12-Phase PWM Controller
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Overview
Description
The ISL68229 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.
The ISL68229 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 Renesas PowerNavigator™ 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
- SMBus/PMBus V1.3 compatible
- Up to 16 user configurations stored in device Non-Volatile Memory (NVM)
Applications
Applications
- DDR memory solutions
- Artificial intelligence/accelerator cards (FPGA, ASIC)
- Network equipment
- Server/storage equipment
- Telecom/datacom equipment
- Point of load power supply (memory, DSP, ASIC, FPGA)
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.
Product Options
Processing table
| QFN | Tube | 37 | ||
ISL68229IRAZ-T Active Samples Available |
QFN | Reel | 4000 | Get Samples, |
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