ADI ADP1053三路数字电源控制方案
发布时间：2012-2-7 12:50
发布者：1770309616
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ADI公司的ADP1053是三路数字电源控制器,基于电压模式PWM架构,能对三路单独输出提供控制,监视和保护,其它两路带反馈控制,另一路带固定占空比而未调整电压,三路的开关频率从50kHz到625kHz可单独编程,适用于隔离和非隔离的DC/DC转换器,AC/DC转换器.本文介绍了ADP1053主要特性, 功能方框图, 简化应用电路图以及两种典型应用电路图. The ADP1053, based on a voltage mode PWM architecture, is a flexible, application dedicated digital controller designed for isolated and nonisolated dc-to-dc power supply applications. The ADP1053 enables highly efficient power supply design and facilitates the introduction of intelligent power management techniques to improve energy efficiency at a system level. The ADP1053 provides control, monitoring, and protection of up to three independent channel outputs. The eight flexible PWM outputs can be configured as three independent channels: two regulated channels with feedback control plus one additional unregulated channel with a fixed duty cycle. The frequency of these three channels can be programmed individually from 50 kHz to 625 kHz; all channels can be synchronized internally or to an external signal. All eight PWM outputs can also be assigned to enable a single-channel solution, which may be required in high power, high efficiency applications. Features include differential voltage sensing, fast current sensing, flexible start-up sequencing and tracking, and synchronization between devices to reduce low frequency system noise. Protection and monitoring features include overcurrent protection (OCP), undervoltage protection (UVP), overvoltage protection (OVP), and overtemperature protection (OTP). ADP1053主要特性: Configurable 8-PWM engine with up to 3 channels 2 independent digitally controlled channel outputs Voltage mode PWM control with 625 ps resolution Remote voltage sensing on both channels Programmable compensation filters Voltage feedforward option Flexible start-up sequencing and tracking Switching frequency: 50 kHz to 625 kHz Frequency synchronization Independent channel protections: OVP and OCP 2 independent OTP circuits Programmable fault protection sequence Volt-second balance and dual-phase current balance for interleaved configurations On-board EEPROM PMBus-compliant Graphical user interface (GUI) for ease of programming Available in a 40-lead, 6 mm × 6 mm LFCSP ADP1053应用: AC-to-DC power supplies Isolated dc-to-dc power supplies Intermediate rail power supplies Nonisolated dc-to-dc power converter 
图1.ADP1053功能方框图 
图2.ADP1053简化应用电路图 
图3.ADP1053应用电路(1):降压预调整+固定PWM全桥拓扑和同步整流 
图4.ADP1053应用电路(2):一路全桥整流两路输出 详情请见: 
ADP1053[2].pdf
(1.35 MB)
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