Infineon BTS6163DAUMA1 High-Side Power Switch: Datasheet, Application Circuit, and Pinout Guide
The Infineon BTS6163DAUMA1 is a state-of-the-art, intelligent high-side power switch fabricated using Infineon's proprietary Smart SIPMOS technology. Housed in a compact TO-263-7 (D2PAK-7) surface-mount package, this device is engineered for robust performance in demanding automotive and industrial applications, providing a reliable interface between a low-power microcontroller and a high-power load.
This single-channel switch integrates a vertical N-channel Power MOSFET with a charge pump, offering a low standby current and a wide operational voltage range from 5.5 V to 40 V. Its key strength lies in its comprehensive suite of integrated protection features, including over-current protection (IS) with adjustable limitation levels, over-temperature shutdown (TSD), and over-voltage protection (CLAMP). Furthermore, it provides diagnostic feedback via a dedicated status pin, which signals open-load conditions during switch-off and overload/over-temperature faults during operation, making system diagnostics straightforward and effective.
Pinout Guide (TO-263-7 Package):
Pin 1 (IN): Digital control input. A logic high signal (typically > 3.5V) turns the power MOSFET on.
Pin 2 (GND): Ground reference for the logic and protection circuits.
Pin 3 (IS): Analog diagnostic output. The current flowing through this pin is proportional to the load current.
Pin 4 (SR): Status report output (open-drain). This pin is pulled low to signal a fault condition (e.g., overtemperature, short-circuit) or an open-load condition when the switch is off.
Pin 5 (NC): Not connected internally.
Pins 6, 7, 8 (OUT): Output pin connected to the drain of the power MOSFET. These pins are internally connected and must be tied together on the PCB to handle the high load current.
Application Circuit
A typical application circuit for driving a resistive or inductive load (e.g., a lamp, solenoid, or heater) is straightforward. The microcontroller's GPIO pin is connected to the IN pin to provide the on/off control signal. The load is connected between the OUT pin and ground. The SR pin is typically pulled up to a positive voltage (e.g., 5V) via a resistor (e.g., 10 kΩ) and can be read by the microcontroller to monitor the switch's status.
For current sensing, a precision resistor (R_IS) is connected between the IS pin and ground. The voltage across this resistor (V_IS) is proportional to the load current (I_LOAD), allowing the microcontroller to measure it via an ADC pin. The formula is approximately: I_LOAD = (V_IS / R_IS) k_IS, where k_IS is the current sense ratio found in the datasheet.
Crucial Datasheet Parameters
When designing with the BTS6163DAUMA1, several parameters from the datasheet are critical:
Continuous Current (I_{CON}): Up to 25 A at 85°C, derated at higher temperatures.
On-State Resistance (R_{DS(on)}): Typically 7.5 mΩ, which minimizes conduction losses and heat generation.
Current Sense Ratio (k_IS): Typically 16,500, defining the relationship between load current and sense current.
Over-Current Shutdown: The device limits the output current to a predefined level, protecting itself and the load.
ICGOOODFIND: The Infineon BTS6163DAUMA1 stands out as an exceptionally robust and feature-rich high-side switch. Its high current capability, minimal power dissipation, and extensive diagnostic and protection functions make it an ideal, all-in-one solution for enhancing the reliability and intelligence of power distribution systems in harsh environments like automotive engine control units and industrial automation.
Keywords: High-Side Switch, Over-Current Protection, Diagnostic Feedback, Automotive Grade, Smart Power Switch
