Infineon Technologies BTS7810KNTMA1

Overview

BTS7810KNTMA1 from Infineon Technologies is a quad-channel smart power switch IC integrating two high-side (26 mΩ R_DS(on)) and two low-side (14 mΩ R_DS(on)) N-channel DMOS switches in a single P-TO263-15-1 package, designed for DC motor H-bridge control with integrated open-load detection, overtemperature shutdown, and short-circuit protection. It operates up to 40 V supply, supports 42 A peak current, and delivers diagnostic status flags via open-drain ST1/ST2 outputs.

For engineers reviewing the BTS7810KNTMA1 datasheet, BTS7810KNTMA1 pinout, BTS7810KNTMA1 application, or BTS7810KNTMA1 equivalent, key selection criteria include dual high-side/low-side configuration flexibility, isolated source pins for external current sensing, thermal resistance (R_thjC,H = 0.75 K/W), UVLO hysteresis, and TTL/CMOS-compatible digital inputs IH1/IH2 and IL1/IL2.

Technical Context

The BTS7810KNTMA1 implements a triple-die TrilithIC architecture: one SMART SIPMOS® double high-side die and two S-FET2 logic-level low-side dies, all thermally isolated on separate leadframes. Its functional block integrates Schmitt-trigger inputs with ESD clamping, biasing and protection circuitry, and independent diagnosis logic per high-side channel.

Each high-side switch features dedicated status flag (ST1/ST2) with open-drain Zener-clamped output, while low-side inputs (IL1/IL2) directly drive gate terminals. Overtemperature protection uses hysteresis-based junction monitoring, and open-load detection operates only in off-state by measuring output voltage against a defined threshold.

Key Specifications

Pinout & Package

Packaged in P-TO263-15-1 (PowerPak), a thermally optimized surface-mount outline with three isolated heat slugs (Heat-Slug 1–3) for independent thermal management of high-side and low-side dies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad high-/low-side switch applications.

Compared with SPD30N06S2L-13 and BTS716G, BTS7810KNTMA1 uniquely combines dual high-side + dual low-side integration, embedded diagnostics, and thermal isolation - reducing system-level component count by ≥7 parts and enabling compact, self-monitoring motor modules.

Availability

BTS7810KNTMA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motion control, and medical device actuation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for BTS7810KNTMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with leadership in silicon-based power stages and intelligent switching solutions.

The BTS7810KNTMA1 belongs to Infineon's TrilithIC family - engineered for high-reliability motor control in harsh environments, emphasizing thermal resilience, fault coverage, and board-space efficiency through multi-die integration.

FAQ

What is the maximum continuous current rating per channel?

The BTS7810KNTMA1 supports 25 A continuous drain current per low-side switch at T_C = 85 °C (pulse-tested), and 10 A DC per high-side switch at T_C = 125 °C. Derating is required above ambient temperatures due to R_thjC limits; actual usable current depends on PCB copper area and airflow.

How does open-load detection work and what conditions trigger it?

Open-load detection activates only when the high-side switch is off; the IC measures voltage at SH1/SH2 and compares it to an internal threshold. If voltage exceeds ~V_S − 1.5 V with both low-side switches off, ST1/ST2 pulls low after a fixed delay. It cannot detect open-load during active switching or if low-side paths are enabled.

Can BTS7810KNTMA1 be used in a 3-phase inverter configuration?

No - the BTS7810KNTMA1 contains only two high-side and two low-side switches, insufficient for full 3-phase bridge (which requires six switches). It can drive one phase of a 3-phase motor in conjunction with external half-bridges, but lacks complementary gate drive timing and shoot-through protection for native 3-phase use.

What is the purpose of the three separate heat slugs in the P-TO263-15-1 package?

The three heat slugs (Heat-Slug 1–3) provide independent thermal paths for the two low-side dies and the double high-side die, preventing thermal crosstalk between channels. This allows simultaneous high-current operation of all four switches without shared junction temperature rise, improving reliability in sustained motor stall conditions.