Texas Instruments TPIC0108BDWP

Overview

TPIC0108BDWP from Texas Instruments is an intelligent PWM-controlled H-bridge IC for DC motor control, providing forward, reverse, and brake operation modes with integrated DMOS half-bridges. It features 280 mΩ typical rDS(on) at 25°C, 20 µA quiescent supply current, 40 V load dump rating, and operates from –40°C to 125°C case temperature in automotive and battery-powered motor drives.

For engineers reviewing the TPIC0108BDWP datasheet, TPIC0108BDWP pinout, TPIC0108BDWP application, or TPIC0108BDWP equivalent, key selection considerations include its dual Schmitt-trigger logic inputs (IN1/IN2), open-drain STATUS1 and latched push-pull STATUS2 diagnostics, thermal shutdown at 140°C, and fault detection for over-current, over-temperature, under-voltage, and cross-conduction.

Technical Context

The TPIC0108BDWP integrates two independent DMOS half-bridges using TI's LinBiCMOS process, enabling high-side and low-side drive with internal 5 V logic regulation from VCC. Its protection architecture includes dynamic thermal shutdown (160°C), static thermal shutdown (140°C), and current-limiting with 5 A nominal shutdown threshold.

Control logic uses CMOS-compatible Schmitt-trigger inputs with 0.3 V hysteresis for noise immunity, while diagnostics rely on STATUS1 (open-drain, wired-or capable) and STATUS2 (push-pull, latched) outputs. The device supports recirculation current mode during inductive switching transitions to suppress voltage transients without external freewheeling diodes.

Key Specifications

Pinout & Package

The TPIC0108BDWP is housed in a thermally enhanced 20-pin PowerPAD™ SOIC package (DWP) with exposed thermal pad for improved heat dissipation. Four GND pins (7, 9, 12, 14) and four GNDS substrate pins (1, 10, 11, 20) must be connected to system ground; all four VCC pins (2, 4, 17, 19) and dual OUT1/OUT2 terminals are required for full functionality.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar intelligent H-bridge applications.

Compared with DRV8876N and VNH7040AS, the TPIC0108BDWP offers simpler 2-pin logic control and proven thermal robustness in constrained spaces, but lacks current sensing and SPI configurability - making it optimal for cost-sensitive, high-reliability DC motor control where discrete diagnostics suffice.

Availability

TPIC0108BDWP is available at Aetrix Electronics and suitable for automotive HVAC systems, industrial linear actuators, medical infusion pumps, and robotics joint drives requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TPIC0108BDWP 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of automotive-grade product validation.

The TPIC0108BDWP belongs to TI's intelligent power switch family, engineered specifically for robust, low-quiescent-current DC motor control in harsh environments such as automotive cabins and industrial machinery.

FAQ

What is the maximum continuous bridge current supported by the TPIC0108BDWP?

The TPIC0108BDWP supports up to 3 A continuous bridge current at TJ = 125°C with 10,000-hour operational lifetime, as confirmed by electromigration reliability modeling. At lower junction temperatures (e.g., 75°C), continuous current capability increases - reaching approximately 5 A - provided thermal design maintains RθJA ≤ 97°C/W and adequate PCB copper area is used for the PowerPAD™ thermal pad.

How does the TPIC0108BDWP handle inductive kickback during motor direction reversal?

The TPIC0108BDWP implements automatic recirculation current mode: when HSD voltage exceeds VCC + 0.7 V during switching transitions, its internal structure activates a path through the complementary HSD to safely dissipate inductive energy. This eliminates reliance on external freewheeling diodes and prevents destructive voltage spikes - a feature directly implemented in silicon and verified in Figures 2–5 of the SLIS068A datasheet.

Can the TPIC0108BDWP operate with a 5 V logic supply only, or does it require higher VCC?

The TPIC0108BDWP requires VCC between 6 V and 18 V for normal operation; it does not function with only a 5 V supply. Although it internally derives a regulated 5 V rail for logic, that regulation depends on sufficient VCC headroom. Operation below 6 V triggers under-voltage lockout (V(UVCC(OFF)) = 5.0 V), disabling outputs - so 5 V-only systems must use a boost converter or select an alternative driver like the DRV8876N.

What is the purpose of the GNDS pins on the TPIC0108BDWP, and can they be left unconnected?

The GNDS pins (1, 10, 11, 20) connect to the silicon substrate and are mandatory for safe, reliable operation. Leaving them unconnected risks latch-up, inaccurate thermal shutdown triggering, and degraded ESD performance. TI's datasheet explicitly states: "It is mandatory that all four ground terminals plus at least one substrate terminal are connected to the system ground." All GNDS pins must be soldered to a low-impedance ground plane.

Does the TPIC0108BDWP support PWM frequency modulation, and what is its maximum recommended switching frequency?

The TPIC0108BDWP is rated for PWM operation up to 2 kHz, as specified in the "Recommended Operating Conditions" table. While higher frequencies may function, doing so increases switching losses and reduces efficiency due to fixed turn-on/turn-off times (~100 µs). For applications requiring >2 kHz PWM (e.g., audio-frequency motor control), TI recommends alternatives such as the DRV8876N or DRV8874, which support up to 100 kHz with optimized gate drive.