Toshiba Semiconductor and Storage TPCA8057-H,LQ(M

Overview

TPCA8057-H from Toshiba is a silicon N-channel power MOSFET in the U-MOSⅡ-H series, designed as a high-current, low-R_DS(ON) switching element for synchronous rectification in DC-DC converters. It delivers R_DS(ON) = 2.6 mΩ (typ.) at V_GS = 4.5 V, Q_SW = 14 nC (typ.), and supports continuous drain current up to 42 A with 30 V V_DSS, enabling compact, high-efficiency power stages in space-constrained mobile computing systems.

For engineers reviewing the TPCA8057-H datasheet, TPCA8057-H pinout, TPCA8057-H application, or TPCA8057-H equivalent, key selection criteria include its SOP Advance package thermal performance (R_th(ch-c) = 2.19 °C/W), gate threshold range (1.3–2.3 V), and verified avalanche energy rating (E_AS = 229 mJ), all critical for reliable operation in transient-heavy buck converter topologies.

Technical Context

This MOSFET employs Toshiba's U-MOSⅡ-H trench-gate process to achieve low conduction loss and fast switching with minimal gate charge. Its enhancement-mode operation and 30 V V_DSS rating target mid-voltage point-of-load (POL) conversion where efficiency and thermal management are tightly coupled.

The device integrates an intrinsic body diode with V_DSF = −1.2 V (max) at I_DR = 42 A and supports unidirectional reverse recovery during synchronous rectification. Its SOA is characterized up to T_ch = 150 °C, with derating guidance provided for glass-epoxy board mounting configurations (Fig. 5.1/5.2).

Key Specifications

Pinout & Package

TPCA8057-H uses the SOP Advance surface-mount package (TOSHIBA designation: 2-5Q1S), measuring 4.9 × 6.0 × 1.0 mm with 0.069 g typical mass. The package features exposed drain pads on pins 5–8 for enhanced thermal conduction to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SiR872DP-T1-GE3 and IRLML6344TRPBF, the TPCA8057-H uniquely balances ultra-low R_DS(ON), compact SOP Advance packaging, and moderate gate charge-making it optimal for high-current, space-limited synchronous buck stages where thermal density and layout area are co-constrained.

Availability

TPCA8057-H is available at Aetrix Electronics and suitable for notebook PCs, mobile equipment, and high-efficiency DC-DC converters requiring stable component supply across long production lifecycles.

Supply support for TPCA8057-H 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

Toshiba Electronic Devices & Storage Corporation is a Japanese semiconductor manufacturer specializing in power devices, logic ICs, and storage solutions, with deep expertise in trench-MOSFET process technology.

The TPCA8057-H belongs to Toshiba's U-MOSⅡ-H power MOSFET family, engineered specifically for high-frequency, high-current DC-DC conversion in portable and industrial power systems where efficiency, thermal performance, and small form factor are critical.

FAQ

What is the maximum continuous drain current rating for TPCA8057-H?

The TPCA8057-H has a maximum continuous drain current (I_D) of 42 A at T_c = 25 °C. This rating assumes proper PCB thermal design per Toshiba's recommended mounting on glass-epoxy board (a), with channel temperature limited to 150 °C. Derating applies above 25 °C case temperature, as defined in the thermal characteristics table (R_th(ch-c) = 2.19 °C/W).

Does TPCA8057-H support logic-level gate drive?

Yes, the TPCA8057-H supports logic-level gate drive with a gate threshold voltage (V_th) range of 1.3–2.3 V at V_DS = 10 V and I_D = 0.5 mA. Its R_DS(ON) is specified at V_GS = 4.5 V (2.6 mΩ typ.), confirming full enhancement with standard 3.3 V or 5 V microcontroller outputs without external level shifting.

What is the avalanche energy rating of TPCA8057-H and how is it tested?

The TPCA8057-H is rated for single-pulse avalanche energy (E_AS) of 229 mJ under test conditions of V_DD ≈ 24 V, T_ch = 25 °C (initial), L = 0.1 mH, R_G = 1 Ω, and I_AR = 42 A. This rating validates ruggedness against inductive switching transients in hard-switched topologies such as non-synchronous buck or flyback converters.

How does the SOP Advance package of TPCA8057-H improve thermal performance?

The SOP Advance package (TOSHIBA 2-5Q1S) improves thermal performance via four exposed drain terminals (pins 5–8) that provide low-impedance thermal paths to the PCB copper. With R_th(ch-c) = 2.19 °C/W, it achieves significantly better channel-to-case conduction than standard SO-8 packages, allowing >50 W power dissipation with appropriate board copper area-critical for high-current VRMs.

Is TPCA8057-H suitable for synchronous rectification in DC-DC converters?

Yes, the TPCA8057-H is explicitly optimized for synchronous rectification in high-efficiency DC-DC converters. Its low R_DS(ON), fast switching (t_on = 14 ns typ., t_off = 52 ns typ.), and integrated body diode (V_DSF = −1.2 V max at 42 A) enable high duty-cycle operation with minimal conduction and switching losses in buck and multiphase topologies.