57310001-CC模块控制器
功能描述概述
57310001-CC从5V、12V、15V或24V输入电源提供高达2W的未调节输出功率，典型效率高达89%。这是通过高度集成的封装技术和定制功率级和控制IC的实现来实现的。电路设计采用先进的BiCMOS/DMOS工艺。功率级这使用400kHz的推挽式中心抽头拓扑开关（800kHz振荡器除以2）。振荡器和看门狗板载800kHz振荡器通过2分频电路产生开关频率。振荡器可以与其他DCP02电路或外部电源同步，并用于最小化系统噪声。看门狗电路检查振荡器电路的工作。通过将SYNC引脚拉低，可以停止振荡器。输出引脚将为三态。这将在2µs内发生。热关机57310001-CC由热关机电路保护。如果芯片上温度超过150°C，设备将关闭。一旦温度降至150°C以下，将恢复正常运行。
DC/DC转换器
同步如果船上需要多个DC/DC转换器，可能会产生拍频和其他电气干扰。这是由于DC/DC转换器之间开关频率的变化。57310001-CC通过允许设备彼此同步来克服这一问题。通过将SYNC引脚连接在一起，最多可以同步八个设备，同时注意尽量减少跟踪电容。显著的杂散电容（>10pF）会降低开关频率，甚至停止振荡电路。还建议电源线和地线采用星形连接。如果使用同步装置，应注意，在启动时，所有装置将同时汲取最大电流。这可能导致输入电压下降，如果低于最低输入电压（4.5V），设备可能无法启动。2.2µF电容器应靠近输入引脚连接。如果要同步八个以上的设备，建议由外部设备驱动SYNC引脚。详情见单独的申请公告（AB-153）。结构57310001-CC的基本结构与标准IC相同。模制封装内没有衬底。57310001-CC由IC、整流二极管和引线框上的绕线磁环构成。由于封装内没有焊料，57310001-CC不需要任何特殊的PCB组装工艺。这导致具有固有高可靠性的隔离DC/DC转换器。
Function Description Overview
The 57,310,001-CC provides up to 2W of unregulated output power from 5V, 12V, 15V or 24V input power, with a typical efficiency of up to 89%. This is achieved through highly integrated packaging technology and the implementation of customized power levels and control ICs. The circuit design adopts advanced BiCMOS/DMS process. Power stage This uses a 400kHz push-pull center tap topology switch (800kHz oscillator divided by 2). The oscillator and the watchdog board mounted 800kHz oscillator generate the switching frequency through a 2-frequency divider circuit. The oscillator can be synchronized with other DCP02 circuits or external power supplies and used to minimize system noise. The watchdog circuit checks the operation of the oscillator circuit. The oscillator can be stopped by pulling the SYNC pin down. The output pin will be tri state. This will occur within 2 µ s. The thermal shutdown 57310001-CC is protected by the thermal shutdown circuit. If the temperature on the chip exceeds 150 ° C, the device will shut down. Once the temperature drops below 150 ° C, normal operation will resume.
DC/DC converter
Synchronization If multiple DC/DC converters are required on board, beat frequency and other electrical interference may occur. This is due to the change of switching frequency between DC/DC converters. 57310001-CC overcomes this problem by allowing devices to synchronize with each other. By connecting SYNC pins together, up to eight devices can be synchronized, and the tracking capacitance should be minimized. Significant stray capacitance (>10pF) will reduce the switching frequency and even stop the oscillating circuit. It is also recommended that the power cord and ground wire be connected in a star. If synchronous devices are used, it should be noted that all devices will draw the maximum current at the same time when starting. This may cause the input voltage to drop. If it is lower than the minimum input voltage (4.5V), the device may not start. 2.2 µ F capacitors shall be connected close to the input pins. If more than eight devices are to be synchronized, it is recommended that the SYNC pin be driven by an external device. See the separate application bulletin (AB-153) for details. Structure 57310001-CC has the same basic structure as the standard IC. There is no substrate in the molded package. 57310001-CC consists of IC, rectifier diode and wound magnetic ring on lead frame. Since there is no solder in the package, 57310001-CC does not require any special PCB assembly process. This leads to isolated DC/DC converters with inherently high reliability.
