Infineon Technologies BTS7904BATMA1

Overview

BTS7904BATMA1 from Infineon Technologies is a dual-channel automotive-grade half-bridge power switch integrating complementary P- and N-channel OptiMOS™ Trench MOSFETs in a single PG-TO263-5-1 package. It delivers ±40 A continuous drain current at T_C = 25 °C, ultra-low R_DS(on) of 12.7 mΩ (P-channel) and 11.7 mΩ (N-channel) at rated V_GS, and operates up to 150 °C junction temperature - enabling high-efficiency motor control in engine cooling fans and HVAC actuators.

For engineers reviewing the BTS7904BATMA1 datasheet, BTS7904BATMA1 pinout, BTS7904BATMA1 application, or BTS7904BATMA1 equivalent, key selection criteria include bidirectional current capability, AEC-Q101 qualification, thermal resistance (R_thJC = 1.3 K/W for P-channel), integrated reverse diode performance, and gate charge values (Q_g = –121 nC / +123 nC) critical for PWM-driven load switching.

Technical Context

This device implements a monolithic half-bridge topology with independently controllable high-side (P-channel) and low-side (N-channel) switches sharing a common source terminal. Its gate drive architecture supports standard logic-level inputs (V_GS(th) = –1.5 V to –2.1 V for P, +1.7 V to +2.2 V for N) and withstands ±16 V gate-source voltage.

It features built-in avalanche energy rating (E_AS = 350 mJ for P, 200 mJ for N), fast switching (t_r = 94 ns / t_f = 150 ns for P; t_r = 77 ns / t_f = 8 ns for N), and reverse recovery characteristics (t_rr = 41 ns / 47 ns) optimized for inductive load commutation in 12 V automotive systems.

Key Specifications

Pinout & Package

Package: PG-TO263-5-1 (D²PAK-5), surface-mount, thermally enhanced with exposed drain pad for both channels.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge power switching applications.

Compared with BTS7904BATMA1, BTS7960B trades higher current capacity for slightly reduced efficiency, while TPS2HB35-Q1 replaces discrete control flexibility with integrated safety logic and smaller size - making each optimal for distinct subsystem priorities: raw power density, thermal headroom, or functional safety integration.

Availability

BTS7904BATMA1 is available at Aetrix Electronics and suitable for engine cooling fan control, HVAC blower motor drive, steering column lock actuation, and transmission solenoid driver applications requiring stable component supply across automotive production lifecycles.

Supply support for BTS7904BATMA1 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 global manufacturing and quality certification aligned to IATF 16949.

The BTS7904B belongs to Infineon's OptiMOS™ Trench power MOSFET product line, engineered specifically for high-current, high-temperature automotive power stages requiring low conduction loss and robust avalanche ruggedness.

FAQ

What is the maximum allowable gate-source voltage for BTS7904BATMA1?

The absolute maximum gate-source voltage is –16 V to +16 V for the P-channel and –16 V to +5 V for the N-channel, as specified in the datasheet's "Maximum Ratings" table. Exceeding these limits risks permanent gate oxide damage. Recommended operating range is –10 V to –4.5 V for P-channel and +4.5 V to +10 V for N-channel to ensure reliable R_DS(on) and switching behavior.

Does BTS7904BATMA1 include built-in protection features like overcurrent or thermal shutdown?

No, BTS7904BATMA1 is a bare half-bridge power stage without integrated protection circuitry. It relies on external current sensing, microcontroller-based fault detection, and thermal monitoring. Protection must be implemented externally using shunt resistors, analog comparators, or dedicated gate drivers with fault feedback (e.g., Infineon's TLE7181F).

Can BTS7904BATMA1 be used in a full H-bridge configuration?

Yes - two BTS7904BATMA1 devices can be combined to form a full H-bridge: one provides high-side P-channel and low-side N-channel for one leg, the second provides the complementary leg. This configuration supports bidirectional motor control with independent PWM on all four switches, leveraging the device's matched R_DS(on) and thermal symmetry.

What is the recommended PCB layout practice for thermal management?

Use a minimum 4 cm² copper pour connected directly to the exposed drain pad (pins 3 and 4) with ≥6 thermal vias (0.3 mm diameter, 0.8 mm pitch) to an internal ground plane. Maintain ≥0.5 mm clearance between gate traces and high-dV/dt nodes. Route high-current paths (source–drain) with ≥1 mm trace width and avoid sharp corners to reduce EMI and inductance.