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BTS7750GP from INFINEON

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BTS7750GP

Manufacturer: INFINEON, INFNEON

Smart Motorbridges + Driver ICs

Partnumber Manufacturer Quantity Availability
BTS7750GP INFINEON, INFNEON 73 In Stock

Description and Introduction

Smart Motorbridges + Driver ICs The BTS7750GP is a high-current power switch manufactured by Infineon. Here are its key specifications:

- **Manufacturer**: Infineon Technologies  
- **Type**: High-side power switch  
- **Output Current (Continuous)**: Up to 40 A  
- **Output Current (Peak)**: Up to 75 A  
- **Supply Voltage Range**: 4.5 V to 28 V  
- **On-State Resistance (RDS(on))**: Typically 3.5 mΩ (at Tj = 25°C)  
- **Protection Features**:  
  - Overcurrent protection  
  - Overtemperature protection  
  - Short-circuit protection  
  - Undervoltage lockout  
- **Logic Input**: Compatible with 3.3 V and 5 V microcontrollers  
- **Package**: PG-TO263-7 (D2PAK-7)  
- **Operating Temperature Range**: -40°C to +150°C  
- **Diagnostic Features**: Open-load detection in ON and OFF states  

For detailed electrical characteristics and application notes, refer to the official Infineon datasheet.

Application Scenarios & Design Considerations

Smart Motorbridges + Driver ICs# Technical Documentation: BTS7750GP High-Side Power Switch

 Manufacturer : INFINEON  
 Document Version : 1.0  
 Last Updated : October 2023

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## 1. Application Scenarios

### 1.1 Typical Use Cases
The BTS7750GP is a fully integrated, protected high-side power switch designed for robust automotive and industrial applications. Its primary function is to serve as an intelligent switch for resistive, inductive, and capacitive loads.

 Primary Use Cases Include: 
*    Automotive Body Electronics:  Direct control of high-current loads such as:
    *   Heated seats, mirrors, and windows
    *   Power windows and sunroof motors
    *   LED lighting modules (headlights, daytime running lights)
    *   Fan and pump motors (cooling, fuel)
*    Industrial Automation:  Switching solenoids, actuators, small DC motors, and heating elements in PLC output modules.
*    Power Distribution:  Acting as a smart, protected channel in centralized fuse/relay boxes or power distribution units (PDUs), replacing mechanical relays and fuses.

### 1.2 Industry Applications
*    Automotive:  The component is AEC-Q100 qualified, making it suitable for 12V and 24V vehicle systems. It is commonly found in:
    *   Body Control Modules (BCMs)
    *   Seat Control Units
    *   Thermal Management Modules
*    Industrial Control:  Used in factory automation, agricultural machinery, and material handling equipment for reliable load switching.
*    Consumer/Commercial Appliances:  Applicable in high-reliability appliances requiring protected power control.

### 1.3 Practical Advantages and Limitations

 Advantages: 
*    High Integration:  Combines a power MOSFET, charge pump, driver, and comprehensive protection features (overload, short-circuit, over-temperature, undervoltage lockout) in a single PG-TO-263-7 package.
*    Diagnostic Feedback:  Provides a current-sensed analog feedback (IS pin) proportional to the load current, enabling real-time diagnostics and closed-loop control without an external shunt resistor.
*    Low Standby Current:  Ideal for always-on automotive systems where quiescent current is critical.
*    Protected Output:  Active clamp handles inductive turn-off energy, protecting the device and suppressing voltage spikes.
*    Logic Level Input:  Compatible with 3.3V and 5V microcontrollers, simplifying interface design.

 Limitations: 
*    Fixed Configuration:  As a high-side switch only, it is not suitable for H-bridge motor control without complementary low-side switches.
*    Power Dissipation:  While protected, sustained operation near current limits in high ambient temperatures may require significant heatsinking due to the package's thermal resistance.
*    Diagnostic Resolution:  The current sense ratio has a tolerance; applications requiring highly precise current measurement may need external calibration.

---

## 2. Design Considerations

### 2.1 Common Design Pitfalls and Solutions
*    Pitfall 1: Ignoring Inrush Current.  Capacitive or cold filament loads can cause current spikes exceeding the dynamic short-circuit threshold, triggering a shutdown.
    *    Solution:  Implement a soft-start circuit at the load or use the device's diagnostic output to implement a controlled turn-on ramp in software.
*    Pitfall 2: Inductive Load Turn-off.  While the active clamp offers protection, extremely high inductance loads may generate voltage transients exceeding the clamp energy capability.
    *    Solution:  Add an external transient voltage suppression (TVS) diode or a freewheeling diode across the load for additional safety margin.
*    Pitfall 3: Ground Shift.  High load currents flowing through a shared PCB ground plane can cause a voltage shift at the device's G

Alternative Part Number

  • VND5E025AK-E --: High-side driver in the same power-switch class with comparable on-resistance and current capability, suitable as a functional replacement in automotive load-switching applications.
  • MC33984 --: Automotive high-side switch with integrated protection features and similar voltage/current ratings, offering a comparable system-level solution.
  • TPS1H100-Q1 --: AEC-Q100 qualified high-side power switch with comparable RDS(on) and current handling, usable as an alternative with minor circuit adaptation.
  • BTS50085-1TMA --: Infineon PROFET high-side switch with comparable current rating and protection features, suitable replacement in power switch applications.
  • BTS7008-2EPA --: PROFET+2 high-side power switch from a different series, offering similar switching and diagnostic functionality.
  • VND5T100AJ-E --: Automotive high-side driver with comparable voltage and current capability, usable as a cross-manufacturer alternative.
  • VND7050AJTR-E --: High-side driver in the same power-switch class with comparable on-resistance and current capability, suitable as a functional replacement.
  • MC33984BPEK --: Automotive high-side switch with similar voltage and current ratings, offering an alternative source for the same application.
  • TPS1H100AQPWPRQ1 --: Automotive-qualified high-side power switch with comparable RDS(on) and protection features, usable as a cross-vendor substitute.

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