移动互联网时代，5G建设、数据中心作为重要支柱，传统的CPU、FPGA已无法满足超大数据运算速度的需求，对电源供电提出了更高要求。放置在靠近LSI (如微处理器、DSP、FPGA、ASIC)的DC/DC转换器POL电源如何匹配运用，接下来带大家一起解密。

（一）6-20A：小体积、全国产化、精准可调——K12MT系列

LSI附近的电源设计需要面临体积、兼容、精度等问题，金升阳POL电源K12MT系列可适配需求。该系列具有6A/12A/16A/20A带载能力，输出电压在0.6-5.5V范围内精准可调。

① 小体积

目前，提升电源集成度和微型化是必然趋势。K12MT系列体积超小，集成了完整DC/DC电源解决方案所需的所有无源组件，长度和宽度下降后仅12.2*12.2mm，极大提升了系统板空间利用率。

② 全国产化

该系列采用全国产化设计，器件满足100%国产化，不仅交付有保障，且极大缩短客户产品设计周期。

③ 兼容性

封装满足DOSA、POLA标准，同时在标准基础上增加侧壁沉铜方便客户焊接。

④ 宽电压输出可调

0.6-5.5V输出电压精准可调，可灵活设计应用与0.6/1.2/1.8/2.5/3.3/5V的分布式供电系统，如ASIC，FPGA，DSP，CPU/GPU，RAM。

 

（二）40-100A：超大电流、PMBus、高稳定——KD12T系列

目前对于超大数据运算需求，电源供电有几个特点，对电流需求大，电压需求低，以及负载大跳变，金升阳KD12T系列可破局。

① 超大电流40-100A

供电电流与CPU的运算速度成正比，以i7为例，所需的供电电流在75A。金升阳POL电源KD12T系列有40A、60A、100A可选。

其中40A（产品KD12T-40A）可两模块并联至80A；60A（产品KD12T-60A）双路30A/单路60A，可两模块并联至120A，可满足绝大多数应用。

 

② PMBus 数模混合

KD12T系列具备PMBus 数字通信协议功能，可实现工作状态监控，实时监控读取产品工况，如电压、电流、温度等。以及辅助失效分析，失效后黑匣子数据调用，可确定失效原因和失效前一刻的数据。

同时，好处还包括无需过多的外围模拟器件，通过PMBus指令调节内部参数，提高一致性和稳定性；而上位机也可调节参数（编程题→填空选择题），读取波形数值，降低了操作的繁杂程度。

③ 高精度，低纹波

部分芯片不仅大动态变化，di/dt(上升沿)也会达到非常快的速率，峰峰值要求尽量控制在±3%以内，这对pol电源的精度、纹波、响应速度都有高要求。

KD12T系列满足高精度输出电压低至±10mV，输出纹波低至22 mV。以40A产品为例，Vo=0.6V时，纹波typ是6mV，动态 typ是18mV，在业内居于前位。

 

（三）应用案例：波分板卡

通信领域里，承载网可用于传送各种语音和数据业务，常见设备如光通信设备。其波分板卡需要POL电源，配置3~60A，0.6~5.5Vdc，40A及以上，PMBUS功能。

波分板卡的电源方案可如下图，用一个40A的POL电源KD12T-40A。该产品具备强力优势，包括宽输入电压范围4.5-14.4V，低输出可调电压0.6-4.5V，高精度±2mV、低纹波4mV、低瞬态响应偏差18mV，效率高达 95%（7.5Vin，3.3Vout，100%Io，损耗仅5.9W）。

同时功能丰富，具备PMBus、PGOOD、输出跟踪、远端补偿、时钟同步、多模块并联、电流均流等功能。

 

In the era of mobile Internet, 5G construction and data center are important pillars. The traditional CPU and FPGA can no longer meet the demand for super data computing speed, which puts forward higher requirements for power supply. How to match and use the POL power supply of DC/DC converters placed near LSIs (such as microprocessors, DSPs, FPGAs, ASICs)? Next, let's decrypt it together.

（1） 6-20A: Small volume, nationwide production, precise adjustability - K12MT series

The power supply design near LSI needs to face issues such as volume, compatibility, and accuracy, and the K12MT series of Jinshengyang POL power supply can adapt to these requirements. This series has a load capacity of 6A/12A/16A/20A, and the output voltage is precisely adjustable in the range of 0.6-5.5V.

① Small volume

At present, improving power integration and miniaturization is an inevitable trend. The K12MT series has an ultra small size and integrates all the passive components required for a complete DC/DC power solution. The length and width have been reduced to only 12.2 * 12.2mm, greatly improving the utilization of system board space.

② National industrialization

This series adopts a nationwide production design, and the components meet 100% localization requirements. Not only is delivery guaranteed, but it also greatly shortens the customer's product design cycle.

③ Compatibility

The packaging meets DOSA and POLA standards, and side wall copper sinking is added on the basis of the standards to facilitate customer welding.

④ Wide voltage output adjustable

The output voltage of 0.6-5.5V is precisely adjustable and can be flexibly designed for applications in distributed power supply systems such as ASIC, FPGA, DSP, CPU/GPU, RAM, and 0.6/1.2/1.8/2.5/3.3/5V.

（2） 40-100A: Ultra high current, PMBus, high stability - KD12T series

At present, there are several characteristics of power supply for ultra large data computing needs, such as high current demand, low voltage demand, and large load fluctuations. The Jinshengyang KD12T series can break through this situation.

① Ultra high current 40-100A

The power supply current is directly proportional to the computing speed of the CPU. Taking i7 as an example, the required power supply current is 75A. The KD12T series of Jinshengyang POL power supply has options of 40A, 60A, and 100A.

Among them, 40A (product KD12T-40A) can be connected in parallel with two modules up to 80A; 60A (product KD12T-60A) dual 30A/single 60A, can be connected in parallel with two modules up to 120A, which can meet the vast majority of applications.

② PMBus Digital Analog Hybrid

The KD12T series has the PMBus digital communication protocol function, which can achieve work status monitoring, real-time monitoring and reading of product conditions, such as voltage, current, temperature, etc. And auxiliary failure analysis, black box data call after failure, can determine the cause of failure and the data from the moment before failure.

Meanwhile, the benefits also include not requiring too many peripheral simulator components, adjusting internal parameters through PMBus instructions, improving consistency and stability; The upper computer can also adjust parameters (programming questions → fill in the blank multiple-choice questions), read waveform values, and reduce the complexity of operations.

③ High precision, low ripple

Some chips not only undergo large dynamic changes, but also reach a very fast rate of di/dt (rising edge). The peak to peak value is required to be controlled within ± 3% as much as possible, which has high requirements for the accuracy, ripple, and response speed of the POL power supply.

The KD12T series meets the requirements of high-precision output voltage as low as ± 10mV and output ripple as low as 22 mV. Taking the 40A product as an example, when Vo=0.6V, the ripple typ is 6mV and the dynamic typ is 18mV, ranking among the top in the industry.

（3） Application case: Wavelength division board card

In the field of communication, carrier networks can be used to transmit various voice and data services, with common devices such as optical communication devices. The wavelength division board requires a POL power supply, configured with 3~60A, 0.6~5.5Vdc, 40A and above, and PMBUS function.

The power supply scheme for the wavelength division board card can be shown in the following figure, using a 40A POL power supply KD12T-40A. This product has strong advantages, including a wide input voltage range of 4.5-14.4V, low output adjustable voltage of 0.6-4.5V, high precision ± 2mV, low ripple 4mV, low transient response deviation of 18mV, and an efficiency of up to 95% (7.5Vin, 3.3Vout, 100% Io, loss of only 5.9W).

At the same time, it has rich functions, including PMBus, PGOOD, output tracking, remote compensation, clock synchronization, multi module parallel connection, current sharing, and other functions.