HIP6012数据手册集成电路（IC）的特殊用途稳压器规格书PDF

描述 Description

The HIP6012 provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous-rectified buck topology. The HIP6012 integrates all of the control, output adjustment, monitoring and protection functions into a single package.
The output voltage of the converter can be precisely regulated to as low as 1.27V, with a maximum tolerance of ±1.5% over temperature and line voltage variations. The HIP6012 provides simple, single feedback loop, voltagemode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0% to 100%.
The HIP6012 protects against overcurrent conditions by inhibiting PWM operation. The HIP6012 monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor.

特性 Features

• Drives Two N-Channel MOSFETs
• Operates From +5V or +12V Input
• Simple Single-Loop Control Design
• Voltage-Mode PWM Control
• Fast Transient Response
• High-Bandwidth Error Amplifier
• Full 0% to 100% Duty Ratio
• Excellent Output Voltage Regulation
• 1.27V Internal Reference
• ±1.5% Over Line Voltage and Temperature
• Overcurrent Fault Monitor
• Does Not Require Extra Current Sensing Element
• Uses MOSFETs rDS(ON)
• Small Converter Size
• Constant Frequency Operation
• 200kHz Free-Running Oscillator Programmable from 50kHz to Over 1MHz
• 14 Pin, SOIC and TSSOP Packages
• Pb-Free Available (RoHS Compliant)

应用 Application

• Power Supply for Pentium®, Pentium Pro, PowerPC™ and Alpha™ Microprocessors
• High-Power 5V to 3.xV DC-DC Regulators
• Low-Voltage Distributed Power Supplies