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BUK9Y14-80E,115-VB Product details
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BUK9Y14-80E,115-VB is a Single N-MOS deeply optimized for high-power-density switching applications, using Trench technology to combine extremely low on-resistance with high switching reliability. The LFPAK56 package achieves an excellent balance between thermal performance and board space. The combination of 80V voltage tolerance, 90A continuous current capability, and 6mΩ-level on-resistance makes it a powerful cost-reduction and performance-enhancing alternative to traditional DPAK/D2PAK devices in high-current power supplies, motor drives, and automotive systems, especially for applications with strict requirements on heat dissipation, space, and efficiency.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| LFPAK56 | Single-N | 80V | 1.4V | 90A | 7.2(mΩ) | 6(mΩ) | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| LFPAK56 | Single-N | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| LFPAK56 | Single-N | 80V | 1.4V | 90A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| LFPAK56 | Single-N | 80V | 1.4V | 90A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| LFPAK56 | Single-N |
- **VDS=80V**: Suitable for 12V/24V/36V/48V systems, provides ample voltage spike margin, significantly reduces avalanche breakdown risk, and enhances system robustness.
- **VGS=±20V**: Compatible with 4.5V~12V logic level drives, can directly connect to MCU/PMIC/PWM controllers, simplifying gate drive circuit design.
- **Vth=1.4V (typical)**: Enters full conduction region even with low-voltage drive, suitable for battery voltage decay scenarios, ensuring excellent current carrying capability at low voltages.
- **RDS(on)=6mΩ @ VGS=10V, 7.2mΩ @ VGS=4.5V**: Ultra-low on-resistance, extremely low temperature rise at full load, can significantly reduce heat sink copper area, while supporting low-voltage logic drive, balancing efficiency and convenience.
- **ID=90A**: Large continuous current margin, capable of handling motor startup, power supply transients, and short-circuit peak current surges.
- **Package LFPAK56**: Low thermal resistance, low parasitic inductance, supports high-frequency switching, saves PCB area, suitable for compact high-power modular designs.
- **VGS=±20V**: Compatible with 4.5V~12V logic level drives, can directly connect to MCU/PMIC/PWM controllers, simplifying gate drive circuit design.
- **Vth=1.4V (typical)**: Enters full conduction region even with low-voltage drive, suitable for battery voltage decay scenarios, ensuring excellent current carrying capability at low voltages.
- **RDS(on)=6mΩ @ VGS=10V, 7.2mΩ @ VGS=4.5V**: Ultra-low on-resistance, extremely low temperature rise at full load, can significantly reduce heat sink copper area, while supporting low-voltage logic drive, balancing efficiency and convenience.
- **ID=90A**: Large continuous current margin, capable of handling motor startup, power supply transients, and short-circuit peak current surges.
- **Package LFPAK56**: Low thermal resistance, low parasitic inductance, supports high-frequency switching, saves PCB area, suitable for compact high-power modular designs.
Domain and module applications：
- **High-Power DC-DC Converters**: Extremely low RDS(on) significantly reduces conduction losses, synchronous rectification can improve full-load efficiency by 2~3%, promoting module miniaturization.
- **Motor Drives and BLDC Control**: 90A high current capability and low switching losses enable smoother motor startup and significantly lower controller temperature rise, suitable for power tools, drones, and robot joints.
- **Automotive Power Supplies and Battery Protection**: 80V voltage margin covers 12V/24V/48V automotive buses, fast turn-off characteristics ensure microsecond-level protection during overcurrent/short circuits, low internal resistance reduces protection board self-heating.
- **Server and Telecom Power Supplies**: LFPAK56 package has low thermal resistance, suitable for high-load continuous output, improving power module power density and long-term reliability.
- **Lithium Battery Charge/Discharge Management**: Low conduction voltage drop reduces charging loop losses, supports high-current fast charging, suitable for energy storage devices and EV BMS.
- **Industrial Automation and Power Interfaces**: Wide voltage range and strong surge withstand capability, suitable for inductive load control such as PLC outputs, solenoid valve drives, air pumps, and hydraulic pumps.
- **Power Tools and Garden Machinery**: High current density and impact resistance characteristics match the repeated start-stop and overload conditions of brushed/brushless motors, extending tool life. **Selection Summary**: BUK9Y14-80E,115-VB achieves a balance between 80V withstand voltage, 90A high current, 6mΩ ultra-low on-resistance, and the advanced LFPAK56 package, making it a high-performance general-purpose choice for high-voltage, high-current switching applications, especially suitable for projects with strict requirements on efficiency, thermal management, and system miniaturization.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
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