What is the BTN8982TA Bridge and How Does it Work?
18 January 2024
Ⅲ. Specifications of BTN8982TA
Ⅳ. Working principle of BTN8982TA
Ⅴ. BTN8982TA symbol, footprint and pin configuration
Ⅶ. Application fields of BTN8982TA
BTN8982TA is a high-performance automotive-grade dual-channel low-side switch produced by Infineon. This switch has many advantages, such as low-side switching frequency, high reliability, and easy integration, making it widely used in automotive electronics, industrial electronics, and consumer electronics. In this article, we will explore in depth the working principle and application fields of BTN8982TA.
The BTN8982TA is an integrated high-current half-bridge driver for motor drive applications. The chip integrates two N-type MOSFETs and two P-type MOSFETs with low on-resistance and high switching speeds, and is capable of withstanding voltages up to 40 V and currents up to 25 A. The BTN8982TA includes a variety of protection and diagnostic functions, making it ideal for safety-related applications such as electric parking brakes, active suspension control, and fuel pumps. Because of its durability and simplicity, the NovalithIC BTN8982TA is also well suited for use in electronic seatbelt pretensioners, T-Cases, HVAC control modules, and more.
Replacements and equivalents:
• BTN8962TAA
The BTN8982TA belongs to the NovalithIC™ family and combines three individual chips within a single package. It includes a p-channel highside MOSFET, an n-channel lowside MOSFET, and a driver IC, forming an integrated high-current half-bridge. All three chips are mounted on a common lead frame using chip-on-chip and chip-by-chip technology. The power switches employ vertical MOS technologies to ensure optimal on-state resistance. The presence of the p-channel highside switch eliminates the need for a charge pump, minimizing electromagnetic interference. The integrated driver IC facilitates easy interfacing with a microcontroller, offering logic-level inputs, current sense diagnosis, slew rate adjustment, dead time generation, and protection against overtemperature, undervoltage, overcurrent, and short circuit. Additionally, multiple BTN8982TA units can be combined to create H-bridge and 3-phase drive configurations.
• The BTN8982TA is manufactured by Infineon.
• It operates from a supply voltage of 8V to 18V.
• It has an operating temperature of -40°C to 150°C.
• It uses SMD or SMT mounting.
• It has 8 pins in a TO-263-7 package and Tape & Reel (TR) packaging.
• The BTN8982TA measures 10 mm in length, 10.3 mm in width and 4.4 mm in height.
The BTN8982TA incorporates both a P-channel high-side MOSFET and an N-channel low-side MOSFET, along with an integrated driver IC. Its operational principle is based on the interaction of its internal P-channel high-side MOSFET and N-channel low-side MOSFET. By controlling the switching state of these two MOSFETs, it can realize the control of loads, such as motors. Specifically, when the P-channel high-side MOSFET is on and the N-channel low-side MOSFET is off, the upper side of the motor coil will be connected to the positive terminal of the power supply, and the lower side will be connected to the negative terminal of the power supply to drive the motor to rotate positively. Conversely, when the P-channel high-side MOSFET is off and the N-channel low-side MOSFET is on, the upper side of the motor coil will be connected to the negative terminal of the power supply and the lower side will be connected to the positive terminal of the power supply, thereby driving the motor to rotate in the reverse direction. Furthermore, the BTN8982TA incorporates various protective features, including safeguards against over-temperature, under-voltage, over-current, and short-circuit situations, among others. These features guarantee the secure and stable operation of loads, such as motors, across diverse operating conditions. Additionally, the utilization of a P-channel high-side switch in the BTN8982TA eliminates the need for a charge pump, thereby minimizing electromagnetic interference (EMI).
The above figure shows the symbol, footprint and pin configuration of the BTN8982TA, which has 8 pins with the following names and functions:
Pin 1 (GND): Ground
Pin 2 (IN): Input, defines whether high- or lowside switch is activated
Pin 3 (INH): Inhibit, when set to low device goes in sleep mode
Pin 4 (OUT): Power output of the bridge
Pin 5 (SR): The slew rate of the power switches can be adjusted by connecting a resistor between SR and GND.
Pin 6 (IS): Current sense and diagnostics
Pin 7 (VS): Supply
Pin 8 (OUT): Power output of the bridge
• BTN8982TA is a dual-channel low-voltage side switch that can control two loads at the same time.
• BTN8982TA is suitable for 12V and 24V automotive electrical systems.
• It has low quiescent current, giving it a clear advantage in energy saving.
• It usually has over-current and over-temperature protection functions to ensure that the equipment is safe and reliable when working.
• BTN8982TA usually adopts low power consumption design to reduce the energy consumption of the entire system.
BTN8982TA is mainly used in the following fields:
• Industrial electronics: BTN8982TA is used in industrial automation, Internet smart manufacturing and other fields, allowing the controller to have high-speed, high-voltage, high-current and other characteristics, and is suitable for applications such as motor drivers, DC-DC converters, and switch controllers.
• Consumer electronics: High density, high performance and high reliability are the characteristics of BTN8982TA in the field of consumer electronics. For example, in the field of smart home, BTN8982TA can provide high-efficiency power control signals and is suitable for applications in energy management, smart security, etc. At the same time, in household appliances, BTN8982TA can provide high-efficiency power management modules to help save energy and improve the performance of appliances.
• Automotive electronics: BTN8982TA can solve high-voltage and high-current load problems in vehicles, and is suitable for controllers, power locks, power converters and other fields in automotive electronics. For example, in electric vehicles or hybrid vehicles, BTN8982TA can drive high-power motors to ensure the stability and energy efficiency of the vehicle. At the same time, BTN8982TA can also provide reliable driving signals for vehicle controllers such as air conditioning systems, lighting systems, and entertainment systems in automobiles.
Frequently Asked Questions
1. What is half bridge driver?
Our half-bridge drivers integrate a high-side and low-side driver and reduce switching losses, handle noisy environments and improve system efficiency.
2. What is BTN8982TA?
BTN8982TA is a fully integrated high-current half-bridge for motor drive applications. It is often used in automotive systems for driving DC motors.
3. What is the replacement and equivalent of BTN8982TA?
You can replace the BTN8982TA with BTN8960TA, BTN8960TAAUMA1, BTN8962TAA, BTN8962TAAUMA1, BTN7970SAKSA1 or BTN8982TA.
4. Is the BTN8982TA part of the novalithic family?
The BTN8982TA is part of the NovalithIC™ family containing three separate chips in one package: One p-channel highside MOSFET and one n-channel lowside MOSFET together with a driver IC, forming an integrated high current half-bridge.
