钢铁清洗剂
Silabs公司的CRD-06600FF065N是6.6kW高功率密度双向电动汽车车载充电机参考设计,采用Wolfspeed公司的630V C3M™SiC MOSFET和Silicon Labs公司的Si8233BB 4A双路隔离栅极驱动器,以得到大功率密度电动汽车车载充电机(OBC).参考设计采用Wolfspeed 650 V C3M™ SiC MOSFET具有高频开关性能,得到小型和轻的成本效益的系统.峰值效率为96.5%,功率密度为53 W/in^3或3 KW/L.外形尺寸为220mmx180mmx50mm.参考设计采用通用单相输入电压,90V和265V之间.输出电压250 V-450 V DC,充电模式的输出电流为18A,最大输出功率6.6kW.前端AC/DC PFC采用CCM图腾柱双向拓扑,工作频率67kHz,双向DC/DC CLLC谐振转换器,工作频率148-300 KHz.恒流,恒压或恒功率模式,独特的热沉设计能把热量从MOSFET,变压器和电感中散发出去.主要用在汽车车载充电器.本文介绍了参考设计AC/DC模式和DC/AC模式的电性能指标,主要特性和框图,以及电源主板.控制板,辅助电源板的电路图,材料清单以及参考设计建立图.
The 6.6 kW Bi-Directional On-Board Charger (OBC) targetshigh-power-density, high-efficie
ncy on-board chargerapplications and features Wolfspeeds new 650V C3M SiCMOSFETs. The C3M0060650D is a 60mΩ, 650V MOSFET inTO-247 package.
In this high density OBC, all SiC MOSFETs are mounted ona tooled AL heat sink, with all magnetics potted internally.
MOSFETs and magnetics meet thermal requirements ona 65C cooling plate. The system delivers 54W/in3 powerdensity and exceeding 96.5% in peak efficiency with 67kHzswitching frequency for CCM totem pole PFC and 150kHz-300kHz for a CLLC resonant converter.
图1.CRD-06600FF065N6.6kW双向电动汽车车载充电机外形图
This Users Guide provides the schematic, artwork, and test setup necessary to evaluate Crees CRD-06600FF065N, 6.6KW Bi-Directional EV On-board charger (OBC).
吸咪头The design of Crees 6.6KW, Bi-Directional, On-Board Charger (OBC) for electric vehicles (P/N CRD-06600FF065N) is based upon one of Crees newest generation of SiCMosfets - the C3M0060065D (650V, 60mΩ, TO-247). The OBC is designed to operate from a universal, single-phase input and provide an output voltage in the range of 250 VDC to 450 VDC. It can operate in constant-current, constant-voltage or constant power mode. Its output current, voltage and power can all be set through a CAN (Controller Area Network) interface.
The front-end AC/DC PFC(Power Factor Correction) stage uses a CCM(Continious Conduction Mode) Totem-Pole Bi-Directional topology and operates at 67KHz. It creates a DC link voltage that is followed by a Bi-Directional Isolated DC/DC CLLC resonant converter that operates in a 148-300KHz range. The DC link voltage varies between 385
Vdc and 425Vdc in order to optimize the OBCs efficiency as the charging battery voltage varies between 250Vdc and 450Vdc. This allows the peak efficiency of the OBC to reach 96.5% in both charging and discharging modes. Both the input and output sides of the Bi-Directional Isolated DC/DC stage use a full bridge switch arrangement isolated by a high frequency transformer. A unique tooled heatsink was designed to dissipate the heat generated by all of the power MOSFETs and power magnetics. This integrated heatsink approach allows the design to reach a power density of 54 W/in3.
Even though this unit is designed for electric vehicle (EV) applications, there is no battery charging algorithm built in. It must be tested with a resistive load when it is in DC/AC mode (discharging mode). However, an electronic load or a resistive load may be used in AC/DC mode (charging mode). The units output current in charging mode is limited to 18A.
图2.CRD-06600FF065N6.6kW双向电动汽车车载充电机框图
CRD-06600FF065N6.6kW双向电动汽车车载充电机电性能指标(AC/DC模式):
q110
监视门CRD-06600FF065N6.6kW双向电动汽车车载充电机电性能指标(DC/AC模式):
CRD-06600FF065N主要特性:
• Universal AC input voltage range.
Some of the features and the limitations of Crees CRD-06600FF065N reference design board are given below:
• Isolated 250Vdc – 450Vdc output in AC/DC mode.
• Maximum output current is limited to 18A in AC/DC mode whenever the output voltage is between 250Vdc and 366Vdc and the input voltage exceeds 215 VAC.
• Maximum output power is limited to 6.6KW in AC/DC mode whenever the output voltage is between 366Vdc and 430Vdc. It is linearly derated from 6.6 KW to 5KW when the output voltage is between 430Vdc and 450Vdc and the input voltage exceeds 215 VAC.聚氨酯丙烯酸酯
二氯烟酸• Maximum power with a 90 Vac input is limited to 2 KW.
• Output power derating is shown in Figure 2 when the input voltage is between 90Vac and 215Vac. It is linearly derated from 6.6 kW to 2kW based on the input voltage while operating in AC/DC mode.
• Power is limited to 3.3 KW in DC/AC mode.
• Output voltage is targeted at 220Vac/50Hz in DC/AC mode.
• Peak efficiency > 96.5%.
• Various protections as shown in Table 4.
• Auto-selection between AC/DC mode and DC/AC mode on every start-up.
• Synchronous rectification (SR) is automatically controlled with load. SR is typically enabled when the load current exceeds 5A. When it is below 2A, SR is disabled.
