ルネサス エレクトロニクス株式会社 (Renesas Electronics Corporation)
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ISL6443A

廃止品

300kHz Dual, 180 Out-of-Phase, Step-Down PWM and Single Linear Controller

ISL6443A Datasheet

概要

Support is limited to customers who have already adopted these products.

The ISL6443A is a high-performance, triple-output controller optimized for converting wall adapter, battery or network intermediate bus DC input supplies into the system supply voltages required for a wide variety of applications. Each output is adjustable down to 0.8V. The two PWMs are synchronized at 180° out of phase, thus reducing the RMS input current and ripple voltage. The ISL6443A incorporates several protection features. An adjustable overcurrent protection circuit monitors the output current by sensing the voltage drop across the lower MOSFET. Hiccup mode overcurrent operation protects the DC/DC components from damage during output overload/short circuit conditions. Each PWM has an independent logic-level shutdown input (SD1SD1 and SD2). A single PGOOD signal is issued when soft-start is complete on both PWM controllers and their outputs are within 10% of the set point and the linear regulator output is greater than 75% of its setpoint. Thermal shutdown circuitry turns off the device if the junction temperature exceeds +150 °C.

ISL6443A Functional Diagram
ISL6443A Functional Diagram
  • Wide Input Supply Voltage Range
  • Variable 5.6V to 24V
  • Fixed 4.5V to 5.6V
  • Three Independently Programmable Output Voltages
  • Switching Frequency 300kHz
  • Out of Phase PWM Controller Operation
  • Reduces Required Input Capacitance and Power Supply Induced Loads
  • No External Current Sense Resistor
  • Uses Lower MOSFET's rDS(ON)
  • Bidirectional Frequency Synchronization for Synchronizing Multiple ISL6443As
  • Programmable Soft-Start
  • Extensive Circuit Protection Functions
  • PGOOD
  • UVLO
  • Overcurrent
  • Over-temperature
  • Independent Shutdown for Both PWMs
  • Excellent Dynamic Response
  • Voltage Feed-Forward with Current Mode Control
  • QFN Packages:
  • QFN - Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline
  • Near Chip Scale Package Footprint, which Improves PCB Efficiency and has a Thinner Profile
  • Pb-Free (RoHS Compliant)
  • Power Supplies with Multiple Outputs
  • xDSL Modems/Routers
  • DSP, ASIC, and FPGA Power Supplies
  • Set-Top Boxes
  • Dual Output Supplies for DSP, Memory, Logic, µP Core and I/O
  • Telecom Systems

ドキュメント

ピックアップ
分類 タイトル 日時
データシート
ISL6443A Datasheet
PDF 934 KB
EOL通知
PLC19018 - General 1H PLC Notice
PDF 229 KB
ホワイトペーパー
How Green is Your Cloud?
PDF 295 KB
製品変更通知
PCN13025 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and STATS ChipPAC (SCM) - Kuala Lumpur, Mal
PDF 106 KB
製品変更通知
PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump
PDF 173 KB
製品変更通知
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia
PDF 248 KB
アプリケーションノート
AN1681: Grounding Techniques
PDF 509 KB
アプリケーションノート
AN1684: Nonideality of Ground
PDF 397 KB
8件

設計・開発

ISL6443AEVAL2Z Step-Down PWM & Linear Controller Eval Board

ISL6443AEVAL2Z

Evaluation
詳しくはこちら

300kHz, Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller Evaluation Board

The ISL6443AEVAL2Z evaluation board highlights the operation of the ISL6443A 300kHz, dual, 180° out-of-phase, step-down pulse width modulating (PWM) and single linear...

主要ドキュメント:
ISL6443AEVAL2Z User Guide

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