uP1539中文资料Single Phase PWM Controller with Light-Load Efficiency Optimization数据手册uPI(UBIQ)规格书

描述 Description

The uP1539 is a single phase PWM controller withintegrated high-current MOSFET driver. It can work witheither 5V or 12V supplies and converts 1.5V to 19V powerinput. The bootstrap diode is built-in to simplify the circuitdesign and minimize external part count.

The uP1539 implements voltage mode control loop withfast transient response. High light-load efficiency isachieved by the single control loop. The operationfrequency is programmable up to 1000kHz.

The uP1539 provides a programmable dual levelovercurrent protection. The current information ismonitored across the inductor DCR. Other features includepre-bias internal soft-start, power OK indication, UVP, OVPand OTP. With aforementioned functions, this partprovides a compact, high efficiency, well-protected andcost-effective solutions. This part is available in WQFN3x3- 16L package.

特性 Features

·VCC Supply Input from 5V to 12V.
·Power Converter Input from 1.5V to 19V.
·Integrated MOSFET Gate Driver.
·Integrated Bootstrap Diode.
·VIN Detection Function.
·Voltage Mode Control Loop.
·Light-Load Efficiency Optimization.
·0.8V Reference Voltage with 0.5% Accuracy.
·Programmable Operating Frequency from 100kHz to 1000kHz.
·Pre-Bias Start-Up.
·Synchronization Function.
·Precise Lossless Inductor DCR Current Sense.
·Programmable Dual Level OCP.
·OVP, UVP, OTP.
·RoHS Compliant and Halogen Free.
·WQFN3x3 - 16L Package.

应用 Application

·Power Supplies for Microprocessors or Subsystem Power Supplies.
·Cable Modems, Set Top Boxes, and DSL Modems.
·Industrial Power Supplies; General Purpose Supplies.
·Low-Voltage Distributed Power Supplies.
·5V or 12V General DC-DC Controller.