The NCE6890D is HeroMicro an N-channel enhancement-mode power MOSFET fabricated using advanced trench technology, designed for high-efficiency, high-current switching applications. Featuring ultra-low on-resistance, fast switching speed, and excellent thermal stability, it is ideal for power management, motor drives, DC-DC converters, and battery protection systems. Housed in a TO-220-3L package, it offers superior heat dissipation and is suitable for industrial, consumer, and automotive electronics.
1. Device Overview
Channel Type: N-Channel
Package: TO-220-3L, 3-pin through-hole, RoHS compliant
Key Electrical Parameters:
Typical: 7.5 mΩ @ VGS = 10 V, ID = 20 A
Maximum: 9 mΩ @ VGS = 10 V, ID = 20 A
Drain-Source Breakdown Voltage (BVDSS): 80 V (typical)
Continuous Drain Current (ID): 30 A (TC = 25°C)
Pulsed Drain Current (IDM): 120 A
On-Resistance (RDS(on)):
Gate-Source Voltage (VGS): ±20 V (maximum)
Maximum Junction Temperature (Tj): 175°C
2. Key Usage Guidelines
(1) Gate Drive Design
Use VGS = 10 V for full enhancement and minimum RDS(on).
Input capacitance (Ciss) is 3300 pF, and reverse transfer capacitance (Crss) is 170 pF; be mindful of Miller effect in high-frequency applications.
Total gate charge (Qg) is 35 nC (@ VGS = 10 V). A low gate resistance (e.g., 6 Ω) is recommended to optimize switching speed and reduce losses.
Switching Characteristics (VDD = 30 V, ID = 30 A, VGS = 10 V, RGEN = 6 Ω):
Turn-on Delay Time (td(on)): 15 ns
Rise Time (tr): 94 ns
Turn-off Delay Time (td(off)): 46 ns
Fall Time (tf): 32 ns
(2) Thermal Management
The TO-220-3L package provides good thermal performance, but a heatsink is recommended for high-current operation.
Power dissipation consists of conduction loss (ID² × RDS(on)) and switching loss. In high-frequency applications, switching loss becomes significant; optimize the gate drive circuit accordingly.
Use large copper areas on the PCB for the drain pad, and connect to ground planes via thermal vias to enhance heat dissipation.
(3) Body Diode Characteristics
The integrated body diode supports robust freewheeling:
Source-Drain Forward Voltage (VSD): ≤ 1.2 V (@ IS = 90 A, VGS = 0 V)
Reverse Recovery Time (trr): 78 ns (@ IF = 90 A, di/dt = 100 A/μs)
Reverse Recovery Charge (Qrr): 51 nC
The body diode can provide a freewheeling path in inductive loads, but its reverse recovery may cause voltage spikes and EMI. Consider adding a fast recovery diode or RC snubber if necessary.
(4) Safe Operating Area (SOA)
Refer to the SOA curve (Figure 8) to ensure operation remains within thermal and current limits.
Avoid switching high currents at high voltages to prevent secondary breakdown.
(5) Electrostatic Discharge (ESD) Protection
MOSFETs are ESD-sensitive. Use ESD-safe handling procedures during assembly, soldering, and testing.
3. Typical Applications
Synchronous Rectification in DC-DC Converters
Motor Drives and H-Bridge Circuits
Battery Management Systems (BMS)
Power Switching and Load Control
Solar Inverters and UPS Systems
4. Summary
The NCE6890D offers high efficiency and reliability with its low RDS(on), high current capability, and excellent switching performance. By properly designing the gate drive, optimizing thermal layout, and adhering to SOA limits, engineers can fully leverage its performance in high-power applications. It is a core power device for modern high-efficiency power system designs.
