NCP5322A中文资料Two-Phase Buck Controller with Integrated Gate Drivers and 5-Bit DAC数据手册ONSEMI规格书

描述 Description

The NCP5322A is a second–generation, two–phase step down controller which incorporates all control functions required to power high performance processors and high current power supplies.Proprietary multi–phase architecture guarantees balanced load current distribution and reduces overall solution cost in high current applications. Enhanced V2™ control architecture provides the fastest possible transient response, excellent overall regulation, and ease of use. The NCP5322A is a second–generation PWM controller because it optimizes transient response by combining traditional Enhanced V2™ with an internal PWM ramp and fast–feedback directly from VCORE to the internal PWM comparator. These enhancements provide greater design flexibility, facilitate use and reduce output voltage jitter. The NCP5322A multi–phase architecture reduces output voltage and input current ripple, allowing for a significant reduction in filter size and inductor values with a corresponding increase in inductorcurrent slew rate. This approach allows a considerable reduction in input and output capacitor requirements, as well as reducing overall solution size and cost.

特性 Features

• Enhanced V2™ Control Method with Internal Ramp
• Internal PWM Ramp
• Fast–Feedback Directly from VCORE
• 5–Bit DAC with 1.0% Accuracy
• Adjustable Output Voltage Positioning
• 4 On–Board Gate Drivers
• 200 kHz to 800 kHz Operation Set by Resistor
• Current Sensed through Buck Inductors or Sense Resistors
• Hiccup Mode Current Limit
• Individual Current Limits for Each Phase
• On–Board Current Sense Amplifiers
• 3.3 V, 1.0 mA Reference Output
• 5.0 V and/or 12 V Operation
• On/Off Control (through Soft Start Pin)
• Power Good Output with Internal Delay
• Pb-Free Packages are Available

简介

NCP5322A属于集成电路（IC）的特殊用途稳压器。由制造生产的NCP5322A特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。