Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller Evaluation Board
The ISL9440BEVAL1Z evaluation board is used to evaluate the performance of the ISL9440B quad-output synchronous buck controller.
The ISL9440B is a quad-output...
Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start
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概览
简介
The ISL9440B and ISL9440C are quad-output synchronous buck controllers that integrate three PWM controllers and one low drop-out linear regulator controller, which are full featured and designed to provide multi-rail power for use in products such as cable and satellite set-top boxes, VoIP gateways, cable modems, and other home connectivity products as well as a variety of industrial and general purpose applications. Each output is adjustable down to 0. 8V. The PWMs are synchronized at 180° out-of-phase thus, reducing the RMS input current and ripple voltage. The ISL9440B and ISL9440C offer programmable soft-start, independent enable inputs for ease of supply rail sequencing, and integrated UV/OV/OC/OT protections in a space conscious 5mmx5mm QFN package. An early warning function is offered to output a logic signal to warn the system to back up data when input voltage falls below a certain level. The ISL9440B and ISL9440C utilize internal loop compensation to keep minimum peripheral components for compact design and a low total solution cost. These devices are implemented with current mode control with feed-forward to cover various applications even with fixed internal compensations.
特性
- Three Integrated Synchronous Buck PWM Controllers
- Internal Bootstrap Diodes
- Internal Compensation
- Independent Control for each Regulator and Programmable Output Voltages; Independent Enable/Shutdown/Soft-start
- Fixed Switching Frequency: 300kHz(B), 600kHz(C)
- Adaptive Shoot-Through Protection on all Synchronous Buck Controllers
- Pre-biased Output Start-up Capability
- Out-of-Phase Switching to Reduce Input Capacitance (0°/180°/0°)
- No External Current Sense Resistor
- Uses Lower MOSFET's rDS(ON)
- Current Mode Controller with Voltage Feed-Forward
- Complete Protection
- Overcurrent, Overvoltage, Undervoltage Lockout, Over-Temperature
- Cycle-by-Cycle Current Limiting
- Wide Input Voltage Range
- Input Rail Powers VIN Pin: 5.6V to 24V
- Input Rail Powers VCC_5V Pin (VIN tied to VCC_5V, for 5V input applications): 4.5V to 5.6V
- Early Warning on Input Voltage Failure
- Integrated Reset Function
- Pb-Free (RoHS Compliant)
应用
应用
- Satellite and Cable Set-Top Boxes
- Cable Modems
- VoX Gateway Devices
- NAS/SAN Devices
- ATX Power Supply
文档
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| PDF 2.17 MB | 数据手册 | |
| PDF 5.51 MB 日文 | 手册 | |
| PDF 1.90 MB | 其他 | |
| PDF 326 KB | 产品变更通告 | |
| PDF 295 KB | 白皮书 | |
| PDF 106 KB | 产品变更通告 | |
| PDF 173 KB | 产品变更通告 | |
| PDF 248 KB | 产品变更通告 | |
| PDF 509 KB | 应用文档 | |
| PDF 397 KB | 应用文档 | |
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设计和开发
软件与工具
软件与工具
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Software type
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公司
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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.
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Simulator | 瑞萨电子 |
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开发板与套件
开发板与套件
模型
ECAD 模块
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.
Processing table
| QFN | Tube | 600 | 获取样片, | |
| QFN | Reel | 6000 |
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