Dual (180° Out-of-Phase) PWM and Linear Controller

The ISL6442 is a high-performance, triple output controller that provides a single high-frequency power solution primarily for Broadband, DSL and Networking applications. This device integrates complete control, monitoring and protection functions for two synchronous buck PWM controllers and one linear controller. Input voltage ripple and total RMS input current is substantially reduced by synchronized 180° out-of-phase operation of the two PWMs.

Features

? 4.5V to 5.5V or 5.5V to 24V Input Voltage Range

? ±1.5 PWM Switcher Reference Accuracy Over Line and Temperature

? Three Programmable Power Output Voltages

- Two PWM Controllers with Out-of-Phase Operation

- Voltage-Mode PWM Control

- One Linear Controller

? Programmable Switching Frequency from 300kHz to 2.5MHz

? Fast Transient Response

- High-Bandwidth Error Amplifier

? Extensive Circuit Protection Functions

- Overvoltage, Undervoltage, and Overtemperature

- Programmable Overcurrent Limit with Hiccup Mode Operation

- Lossless Current Sensing (No Sense Resistor Needed)

? Externally Adjustable Soft-Start Time

- Independent Enable Control

- Voltage Tracking Capability

- Able to Soft-Start into a Pre-Biased Load

? PGOOD Output with Delay

? 24 Ld QSOP

? Pb-Free (RoHS Compliant)

Applications

? Complete 1 Chip Solution for DSL Modems/Routers

? DSP, ASIC, and FPGA Point of Load Regulation

? ADSL, Broadband and Networking Applications

ISL6442屬于集成電路（IC） > 穩(wěn)壓器 - 線性 + 開關。瑞薩科技有限公司制造生產的ISL6442穩(wěn)壓器 - 線性 + 開關此產品族中的產品用于構建執(zhí)行 DC-DC 轉換或電壓調節(jié)功能的電路，采用的是開關模式和線性穩(wěn)壓器功能的組合。雖然具體的拓撲各不相同，但此類產品的主要目的是將開關模式技術的效率優(yōu)勢與線性穩(wěn)壓技術的低噪聲特性結合在一起。