DSPC171模块控制器
转换器
附加功能禁用/启用DSPC171可以通过使用开漏CMOS栅极驱动SYNC引脚来禁用或启用。如果SYNC引脚拉低，DSPC171将被禁用。禁用时间取决于外部负载；内部禁用功能在2µs内实现。拆除下拉开关将使DSPC171启用。SYNC引脚上的电容负载应最小化，以防止振荡器频率降低。去耦合纹波降低400kHz的高开关频率允许简单滤波。为了减少纹波，建议在VOUT上使用1µF电容器。双输出均应与引脚5解耦。建议在输入上使用2.2µF电容器。串联连接DSPC171多个DSPC171隔离的2W DC/DC转换器可以串联连接，以提供非标准电压轨。这可以通过利用DSPC171的电流隔离提供的浮动输出来实现。将一个DSPC171的正极VOUT连接到另一个DCP的负极VOUT（0V）。如果SYNC引脚连接在一起，DSPC171的自同步功能将防止电压轨上的拍频。DSPC171的SYNC功能允许在无需外部过滤的情况下轻松串联，从而将成本降至最低。双输出DSPC171版本的输出也可以串联连接，以提供两倍于图2所示的VOUT幅值。例如，可以连接双15V DSPC1712415D，以提供30V导轨。并联连接DSPC171如果一个DSPC171的输出功率不足，则可以并联多个DSPC171s的输出。同样，SYNC功能允许轻松同步，以防止功率轨拍频，而无需额外的滤波成本。
使用说明
警告设备环境所有部件，无论是运输、操作还是储存，都必须处于非腐蚀性环境中。维护期间的触电危险断开电源或采取预防措施，以确保维护时避免接触带电部件。特定警告在MMU背板上安装双列直插式测试仪之前断开电源。否则将导致与机柜区域接触，可能导致严重或致命电击。 切勿在带电的情况下清洁电气部件或组件。这样做会使您面临电击危险。 论何时使用清洁溶剂，都要戴上护目镜。当使用压缩空气从印刷电路板上清除溶剂时，当溶剂从印刷电路上清除时，可能会溅到眼睛 机柜内有外露的交流和直流连接。这些暴露的电气连接存在电击危险，可能导致人身伤害或死亡。 如果在电源输入面板上断开系统电源后，输入或输出电路存在电击危险，则包含这些外部供电电路的机柜门必须标有警告，说明存在多个电源。
converter
Additional function disable/enable DSPC171 can be disabled or enabled by using the open drain CMOS gate to drive the SYNC pin. If the SYNC pin is pulled down, DSPC171 will be disabled. The disable time depends on the external load; The internal disabling function is implemented within 2 µ s. Removing the pull down switch will enable the DSPC171. The capacitive load on the SYNC pin should be minimized to prevent the oscillator frequency from decreasing. Decoupling ripple reduces the high switching frequency of 400kHz allowing simple filtering. In order to reduce ripple, it is recommended to use 1 µ F capacitor on VOUT. Both outputs should be decoupled from pin 5. It is recommended to use 2.2 µ F capacitors on the input. Series connection DSPC171 Multiple DSPC171 isolated 2W DC/DC converters can be connected in series to provide non-standard voltage rails. This can be achieved by using the floating output provided by the current isolation of the DSPC171. Connect the positive VOUT of one DSPC171 to the negative VOUT (0V) of the other DCP. If the SYNC pins are connected together, the self synchronization function of DSPC171 will prevent the beat frequency on the voltage rail. The SYNC function of DSPC171 allows easy concatenation without external filtering, thus minimizing costs. The outputs of the dual output DSPC171 version can also be connected in series to provide twice the VOUT amplitude shown in Figure 2. For example, a dual 15V DSPC1712415D can be connected to provide a 30V rail. If the output power of one DSPC171 is insufficient, multiple DSPC171s can be connected in parallel. Similarly, the SYNC function allows easy synchronization to prevent power track beats without additional filtering costs.a
instructions
Warning All parts of the equipment environment, whether transported, operated or stored, must be in a non corrosive environment. Danger of electric shock during maintenance Disconnect the power supply or take precautions to ensure that contact with live parts is avoided during maintenance. Specific warnings Disconnect the power before installing the dipstick tester on the MMU backplane. Otherwise, it will lead to contact with the cabinet area, which may cause severe or fatal electric shock. Do not clean electrical components or assemblies when they are live. Doing so exposes you to the risk of electric shock. Wear goggles whenever using cleaning solvents. When using compressed air to remove the solvent from the printed circuit board, when the solvent is removed from the printed circuit, it may splash the eyes. There are exposed AC and DC connections in the cabinet. These exposed electrical connections present an electrical shock hazard that may result in personal injury or death. If there is a risk of electric shock in the input or output circuits after the system power is disconnected on the power input panel, the cabinet door containing these external power supply circuits must be marked with a warning that multiple power supplies exist.
