Infineon Technologies BTS7930B

Overview

BTS7930B from Infineon Technologies is a fully integrated automotive-grade high-current PN half-bridge IC comprising a p-channel high-side MOSFET (10 mΩ typ.), an n-channel low-side MOSFET (18 mΩ typ.), and an integrated driver IC in a single P-TO-263-7 package. It delivers 30 A typical current limit, supports PWM up to 25 kHz, and enables EMI-optimized motor drive control via adjustable slew rate and charge-pump-free architecture. Used in automotive seat/mirror actuators and HVAC blower drives.

For engineers reviewing the BTS7930B datasheet, BTS7930B pinout, BTS7930B application, or BTS7930B equivalent, key selection criteria include verified thermal shutdown latch behavior, logic-level IN/INH interface compatibility with 3.3 V/5 V microcontrollers, current-sense-enabled diagnostics, and validated 28 mΩ total path resistance at 25 °C for low conduction loss in 12 V systems.

Technical Context

The BTS7930B implements a monolithic NovalithIC™ architecture with three die-HS p-MOSFET, LS n-MOSFET, and gate driver-mounted on a common leadframe using chip-on-chip and chip-by-chip bonding. Its p-channel high-side eliminates external charge pump circuitry, reducing board area and EMI generation.

Control logic includes programmable dead time generation, adjustable slew rate via external resistor on SR pin, and status flag output with analog current sense (IS pin). Protection functions are hardware-based: overvoltage lockout (45 V), undervoltage shutdown (5.5 V), overtemperature latch (150 °C), and switched-mode current limitation (30 A typ.) with short-circuit detection.

Key Specifications

Pinout & Package

Package: P-TO-263-7 (single-row surface-mount, thermally enhanced, 7-pin outline with exposed drain pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current half-bridge motor drive applications.

Compared with STSPIN32F0A and BTS724G, the BTS7930B uniquely combines 30 A half-bridge switching, analog current sense, and EMI-optimized slew control in one automotive-qualified package-making it irreplaceable for cost-sensitive, high-reliability brushed DC motor drives requiring diagnostics and thermal robustness.

Availability

BTS7930B is available at Aetrix Electronics and suitable for automotive seat actuators, HVAC blower motors, and power sliding door systems requiring stable component supply across extended vehicle lifecycles.

Supply support for BTS7930B 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 qualification standards aligned to AEC-Q100.

The BTS7930B belongs to the NovalithIC™ family-designed specifically for space-constrained, high-reliability automotive motor control applications requiring integrated protection, diagnostics, and EMI-optimized switching in a single package.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The BTS7930B has a maximum junction temperature of 150 °C, with overtemperature protection activating at this threshold and latching off until INH is cycled. This rating is validated per AEC-Q100 Grade 0 and supports operation in under-hood environments up to 125 °C ambient with appropriate PCB copper area and thermal vias.

How does the IS pin provide both current sensing and fault indication?

The IS pin outputs a proportional analog current (1:2000 scaling) during normal operation, allowing real-time load current measurement. During faults-including overcurrent, overtemperature, or short circuit-it switches to open-drain digital flag mode, pulling low to signal error condition to the host controller without requiring additional GPIOs.

Can the BTS7930B be used in an H-bridge configuration?

Yes-two BTS7930B devices can be combined to form a full H-bridge: one controls the high-side left/low-side right legs, the other handles high-side right/low-side left. Inter-device dead time is managed externally via MCU timing or dedicated gate driver logic to prevent shoot-through.

What external components are mandatory for basic operation?

Mandatory components include: a 100 nF ceramic capacitor between VS and GND (close to pin 7), a pull-down resistor on INH for default disable, and an external resistor from SR to GND to set slew rate. No bootstrap capacitor or external gate resistors are required due to integrated driver and p-channel HS architecture.