Vishay / Dale

800 V, 100 A Bidirectional eFuse

Vishay's eFuse handles continuous power up to 40 kW and operates continuously at full power with less than 25 W of loss

Image of Vishay's 800 V, 100 A Bidirectional eFuseVishay's reference design features an eFuse with SiC MOSFETs and a VOA300 optocoupler designed to handle continuous power up to 40 kW. It has been designed to operate continuously at full power with less than 25 W of losses without requiring active cooling. The design features a preload function, continuous current monitoring, and overcurrent protection. Shutting down after a fault only takes 2.5 µs.

Vishay's eFuse has been designed to safely connect and disconnect a high-voltage power source (typically a high-energy battery pack) to any type of vehicle load using SiC MOSFETs as the primary switches, which can operate up to 50 A continuously. If the current exceeds a predetermined limit, the load is quickly disconnected from the battery pack to protect both the battery pack and the user. The eFuse can also detect excessive load capacitance or a short-circuit during power-up and immediately shutdown.

Features
  • The eFuse is constructed using a standard double-sided, four-layer PCB (FR4) with 70 μm thick copper for each layer. The overall dimensions of the PCB are 150 mm x 90 mm with some extension of the connectors beyond the edges
  • The high-voltage circuitry (12 x SCT4020 SiC MOSFETs) is in the upper part of the PCB. The low-voltage control circuitry with the connectors, control buttons, status LEDs, and multiple test points, is in the lower part of the PCB. In addition, the eFuse can be controlled remotely using a web browser
  • The heat generated by the SiC MOSFETs is transferred to the bottom using thermal vias to a solid layer of copper and then to a heatsink which is electrically isolated from the high voltage
  • The three sockets for the high-voltage connections are included in the demo kit and cables with a cross-section of 16 mm2 must be crimped into a suitable connector. If needed, connectors for wires with a cross section of 4 mm2, 6 mm2, or 10 mm2 are available
  • The high-voltage power source must be connected to the <+HV_IN> socket and the load to the <+HV_OUT> socket. The terminal serves as a reference point for the voltage measurement as well as a discharge path for voltages exceeding the specification
  • The control section of the PCB must be supplied with an external voltage source between 10 V to 16 V and requires approximately 60 mA of current (170 mA to 210 mA if an external controller is connected). The power supply on the PCB is protected against a reverse polarity connection
  • The low-voltage power supply must always be enabled first and then the high-voltage power supply on the input. For safety reasons, an LED will illuminate as soon as the voltage at the input terminal exceeds 50 V
Applications
  • High-voltage sources such as high-energy battery packs

Linear Optocoupler

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-FG-X017TOPTOISO 5.3KV 1CH PHVOLT 8-SMD994 - Immediate$48.98View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-FG-X019TOPTOISO 5.3KV 1CH PHVOLT 8-SMD0 - Immediate$48.98View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-DEFG-X017TOPTOISO 5.3KV 1CH PHVOLT 8-SMD1564 - Immediate$38.77View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-EF-X019TOPTOISO 5.3KV 1CH PHVOLT 8-SMD1 - Immediate$45.19View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-F-X017TOPTOISO 5.3KV 1CH PHVOLT 8-SMD1769 - Immediate$54.08View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-EF-X017TOPTOISO 5.3KV 1CH PHVOLT 8-SMD674 - Immediate$45.19View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-F-X019TOPTOISO 5.3KV 1CH PHVOLT 8-SMD0 - Immediate$28.35View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300-DEFG-X019TOPTOISO 5.3KV 1CH PHVOLT 8-SMD970 - Immediate$38.77View Details
OPTOISO 5.3KV 1CH PHVOLT 8-SMDVOA300OPTOISO 5.3KV 1CH PHVOLT 8-SMD0 - Immediate$28.48View Details

Current Sense Shunt Resistors

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
RES 0.01 OHM 1% 1W 1206WSLP1206R0100FEARES 0.01 OHM 1% 1W 1206188245 - Immediate$5.43View Details
RES 0.05 OHM 1% 1W 1206WSLP1206R0500FEARES 0.05 OHM 1% 1W 1206144103 - Immediate$5.52View Details
RES 0.03 OHM 1% 1W 1206WSLP1206R0300FEARES 0.03 OHM 1% 1W 120611025 - Immediate$5.52View Details
RES 0.02 OHM 1% 1W 1206WSLP1206R0200FEARES 0.02 OHM 1% 1W 120659881 - Immediate$5.76View Details
RES 0.015 OHM 1% 1W 1206WSLP1206R0150FEARES 0.015 OHM 1% 1W 12063583 - Immediate$7.57View Details

Integrated Voltage Divider

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
RES NTWK 2 RES 500K OHM 2512CDMA500KF1000FE5RES NTWK 2 RES 500K OHM 2512900 - Immediate$25.60View Details
RES NTWK 2 RES 50M OHM 2512CDMA50M0F6000FE5RES NTWK 2 RES 50M OHM 2512885 - Immediate$35.23View Details
RES NTWK 2 RES 8M OHM 2512CDMA8M00F5000DE5RES NTWK 2 RES 8M OHM 2512996 - Immediate$27.00View Details
RES NTWK 2 RES 5M OHM 2512CDMA5M00F2500DE5RES NTWK 2 RES 5M OHM 2512964 - Immediate$36.80View Details
RES NTWK 2 RES 5M OHM 2512CDMA5M00F5000DE5RES NTWK 2 RES 5M OHM 251223 - Immediate$36.80View Details
RES NTWK 2 RES 15M OHM 2512CDMA15M0D2500DE5RES NTWK 2 RES 15M OHM 25120 - Immediate$38.36View Details

Ceramic Capacitor

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CAP CER 0.047UF 2KV X7R 2225VJ2225Y473KXFAT4XCAP CER 0.047UF 2KV X7R 2225994 - Immediate$38.20View Details
CAP CER 0.047UF 2KV X7R 2225VJ2225Y473MXFAT4XCAP CER 0.047UF 2KV X7R 22254370 - Immediate$33.26View Details
CAP CER 0.22UF 500V X7R 1825VJ1825Y224KBEAT4XCAP CER 0.22UF 500V X7R 18253680 - Immediate$34.74View Details
CAP CER 0.1UF 100V X7R 1206VJ1206Y104KBBAT4XCAP CER 0.1UF 100V X7R 12065519 - Immediate$9.55View Details
CAP CER 3300PF 1KV X7R 1812VJ1812Y332KBGAT4XCAP CER 3300PF 1KV X7R 18123385 - Immediate$15.56View Details

Preload Resistor

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
RES SMD 100 OHM 5% 25W TO252DTO025C100R0JTE3RES SMD 100 OHM 5% 25W TO2520 - Immediate$36.30View Details
RES SMD 470 OHM 5% 25W TO252DTO025C470R0JTE3RES SMD 470 OHM 5% 25W TO252100 - Immediate$36.30View Details
RES SMD 47 OHM 5% 25W TO252DTO025C47R00JTE3RES SMD 47 OHM 5% 25W TO252276 - Immediate$36.30View Details
RES SMD 2.2 OHM 5% 25W TO252DTO025C2R200JTE3RES SMD 2.2 OHM 5% 25W TO2520 - Immediate$36.30View Details
RES SMD 4.7 OHM 5% 25W TO252DTO025C4R700JTE3RES SMD 4.7 OHM 5% 25W TO25256 - Immediate$36.30View Details

Pulse-Resistant Resistor

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
RES SMD 1M OHM 1% 1W MELFMMB0207MC1004FB200RES SMD 1M OHM 1% 1W MELF25436 - Immediate$2.55View Details
RES SMD 2.2M OHM 1% 1W MELFMMB0207MC2204FB200RES SMD 2.2M OHM 1% 1W MELF12369 - Immediate$2.55View Details
RES SMD 10M OHM 1% 1W MELFMMB0207MC1005FB200RES SMD 10M OHM 1% 1W MELF3460 - Immediate$2.88View Details
RES SMD 360K OHM 1% 1W MELFMMB0207MC3603FB200RES SMD 360K OHM 1% 1W MELF2672 - Immediate$2.88View Details
RES SMD 1.2M OHM 1% 1W MELFMMB0207MC1204FB200RES SMD 1.2M OHM 1% 1W MELF164 - Immediate$2.88View Details
Published: 2024-04-04

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