Onsemi NCP1034高压100V PWM控制器解决方案
Onsemi公司的NCP1034高压PWM控制器,用于输入电压高达100V的高性能同步降压DC/DC应用. NCP1034驱动一对外接N-MOSFET.开关频率从25kHz到500kHz可编,可灵活调整效率和尺寸.同步特性允许开关频率由外接源来设定,或输出同步信号到多个NCP1034控制器.输出电压采用内部调整1.25V低压应用的基准电压来精密地调整.保护特性包括用户可编欠压锁住和打嗝电流限制.高压工作电压高达100V,2A输出驱动能力,具有预偏压负载能力的可编软起动,可编过流保护和可编欠压保护,采用MOSFET RDS(on) 检测的打嗝电流限制,外接频率同步,采用16引脚SOIC封装.主要用在48V非隔离DC/DC转换器,嵌入通信系统,网络和计算电压稳压器,分布式电负载电源架构以及通用高压DC/DC转换器.本文介绍了NCP1034主要特性,框图和典型应用电路,以及评估板STR-10-16V-BLDC-MDK-GEVK主要特性,电路图和材料清单.
The NCP1034 is a high voltage PWM controller designed for high performance synchronous Buck DC/DC applications with input voltages up to 100 V. The NCP1034 drives a pair of external N−MOSFETs. The switching frequency is programmable from 25 kHz up to 500 kHz allowing the flexibility to tune for efficiency and size. A synchronization feature allows the switching frequency to be set by an external source or output a synchronization signal to multiple NCP1034 controllers. The output voltage can be precisely regulated using the internally trimmed 1.25 V reference voltage for low voltage applications. Protection features include user programmable undervoltage lockout and hiccup current limit.
NCP1034主要特性:
..
