Renesas NP88N055KUG-E1-AY

Overview

NP88N055KUG-E1-AY from Renesas Electronics is an N-channel power MOSFET designed for high-current DC-DC converter primary-side switching and motor drive half-bridge legs. It delivers R_DS(on) = 3.9 mΩ max at V_GS = 10 V and I_D = 44 A, supports 88 A continuous drain current at T_C = 25°C, and operates with 175°C channel temperature rating in TO-263 (MP-25ZK) package.

For engineers reviewing the NP88N055KUG-E1-AY datasheet, NP88N055KUG-E1-AY pinout, NP88N055KUG-E1-AY application, or NP88N055KUG-E1-AY equivalent, key selection criteria include low conduction loss under high-pulse-current conditions (I_D(pulse) = 352 A), avalanche energy rating (E_AR = 250 mJ), and thermal resistance (R_th(ch–C) = 0.75°C/W) for high-power density board layouts.

Technical Context

This MOSFET uses a planar vertical DMOS structure optimized for low R_DS(on) and fast switching in hard-switched topologies. Its gate threshold voltage range (2.0–4.0 V) ensures robust turn-on margin with standard 10 V gate drivers while maintaining noise immunity. The device integrates a body diode with t_rr = 48 ns and Q_rr = 63 nC for synchronous rectification support in buck converters.

Thermal design centers on case-mounted heat dissipation: R_th(ch–C) = 0.75°C/W enables 200 W total power dissipation at T_C = 25°C, while R_th(ch–A) = 83.3°C/W limits ambient operation to low-power derated use. Repetitive avalanche capability is validated at V_DD = 28 V, T_ch ≤ 150°C, and R_G = 25 Ω.

Key Specifications

Pinout & Package

NP88N055KUG-E1-AY is housed in a surface-mount TO-263 (MP-25ZK) package with exposed drain tab for thermal and electrical connection. Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source, Pin 4 = Drain (tab extension). The dual-drain configuration provides low-inductance current return path and enhanced thermal spreading.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel power MOSFET applications.

Compared with IXTH88N055L2 and STP88N55, NP88N055KUG-E1-AY offers the lowest R_DS(on) in surface-mount form factor, enabling higher power density in space-constrained 48 V systems while maintaining full avalanche ruggedness-critical for unregulated battery inputs.

Availability

NP88N055KUG-E1-AY is available at Aetrix Electronics and suitable for high-current DC-DC converters, motor drives, uninterruptible power supplies, and energy storage system protection circuits requiring stable component supply and long-term industrial lifecycle support.

Supply support for NP88N055KUG-E1-AY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

NP88N055KUG-E1-AY belongs to Renesas' legacy power MOSFET product line targeting high-efficiency, high-reliability switching in industrial and computing power systems-designed specifically for ruggedized 48 V infrastructure applications.

FAQ

What is the maximum continuous drain current rating for NP88N055KUG-E1-AY?

The NP88N055KUG-E1-AY supports ±88 A continuous drain current at case temperature T_C = 25°C. This rating assumes direct thermal coupling to a heatsink via the exposed drain tab. At higher case temperatures, current must be derated per the datasheet's "Total Power Dissipation vs. Case Temperature" curve-e.g., ~55 A at T_C = 100°C. The NP88N055KUG-E1-AY is not rated for 88 A at ambient temperature without active cooling.

Does NP88N055KUG-E1-AY have avalanche capability, and how is it specified?

Yes, NP88N055KUG-E1-AY is rated for repetitive avalanche operation with I_AR = 50 A and E_AR = 250 mJ under defined test conditions (T_ch ≤ 150°C, V_DD = 28 V, R_G = 25 Ω). This capability is validated per JEDEC JESD24-11 and enables reliable interruption of inductive currents without external snubbers. The NP88N055KUG-E1-AY datasheet specifies these parameters in Absolute Maximum Ratings, confirming its suitability for flyback and motor drive applications with stored energy.

What is the gate threshold voltage range for NP88N055KUG-E1-AY, and why does it matter?

The gate threshold voltage V_GS(th) for NP88N055KUG-E1-AY is 2.0–4.0 V at I_D = 250 µA. This range ensures reliable turn-on with standard 10 V gate drivers while providing noise margin against spurious turn-on from dv/dt coupling. A 4.0 V upper limit prevents unintended conduction in noisy industrial environments. The NP88N055KUG-E1-AY requires ≥6 V gate drive to achieve specified R_DS(on), making 5 V logic-level drivers insufficient for full performance.

Can NP88N055KUG-E1-AY be used in synchronous rectification topologies?

Yes, NP88N055KUG-E1-AY is suitable for synchronous rectification due to its integrated body diode with t_rr = 48 ns and Q_rr = 63 nC at di/dt = 100 A/µs. These values enable clean commutation in buck and LLC converters without excessive voltage overshoot or shoot-through risk. However, the NP88N055KUG-E1-AY body diode forward voltage is 0.92–1.5 V, so optimal efficiency requires precise gate timing control to minimize reverse recovery losses.

What package type does NP88N055KUG-E1-AY use, and how does it impact thermal design?

NP88N055KUG-E1-AY uses the TO-263 (MP-25ZK) surface-mount package with an exposed drain tab serving as both electrical terminal and thermal path. Its R_th(ch–C) = 0.75°C/W enables 200 W power dissipation at T_C = 25°C when mounted on ≥10 cm² 2-oz copper with thermal vias. Unlike TO-220 or TO-247, this package eliminates leadframe thermal bottlenecks-making the NP88N055KUG-E1-AY ideal for compact, high-power-density PCB layouts where heatsink attachment is constrained.