Calculation tool
FET-INRUSH-SOA-CALC — FET SOA margin calculator for dvdt based startup
The design calculator allows user to estimate the FET SOA margin while starting up with dVdt based startup for inrush current control
TPS4811-Q1
Automotive, 3.5V to 100V high-side driver with protection and diagnostics
Data sheet
TPS4811-Q1
- AEC-Q100 qualified with the following results
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Functional Safety-Capable
- 3.5V to 80V input range (100V absolute maximum)
- Output reverse polarity protection down to –30V
- Integrated 12V charge pump with 100µA capacity
- Low 1.6µA shutdown current (EN/UVLO = Low)
- Strong pull up (3.7A) and pull down (4A) gate driver
- Drives external back-to-back N-channel MOSFETs
- Variant with integrated pre-charge switch driver (TPS48111-Q1) to drive capacitive loads
- Two-level adjustable overcurrent protection (IWRN, ISCP) with adjustable circuit breaker timer (TMR) and fault flag output (FLT_I)
- Fast short-circuit protection: 1.2µs (TPS48111-Q1), 4µs (TPS48110-Q1)
-
Accurate analog current monitor output (IMON): ±2% at 30mV VSNS
- Accurate, adjustable undervoltage lockout (UVLO) and overvoltage protection (OV): < ±2%
- Remote overtemperature sensing (DIODE) and protection with fault flag output (FLT_T)
The TPS4811x-Q1 family is a 100V smart high side driver with protection and diagnostics. With wide operating voltage range of 3.5V–80V, the device is suitable for 12V, 24V, and 48V system designs.
It has a strong 3.7A peak source (PU) and 4A peak sink (PD) GATE driver that enables power switching using parallel FETs in high current system designs. Use INP as the gate driver control input.
The device has accurate current sensing (±2%) output (IMON) enabling system designs for energy management. The device has integrated two-level overcurrent protection with FLT_I output with complete adjustability of thresholds and response time. Auto-retry and latch-off fault behavior can be configured. The device features remote overtemperature protection with FLT_T output.
The TPS48111-Q1 integrates a pre-charge driver (G) with control input (INP_G). This features enables designs that must drive large capacitive loads. In shutdown mode, the controller draws a total shutdown current of 1.6µA at 48V supply input.
The TPS4811x-Q1 is available in a 19-pin VSSOP package with a pin removed between adjacent high voltage and low voltage pins, providing 0.8mm clearance.
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Technical documentation
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View all 6 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS4811-Q1 100V Automotive Smart High-Side Driver With Protection and Diagnostics datasheet (Rev. D) | PDF | HTML | 02 Apr 2024 |
| Application brief | Realizing Remote Temperature Sensing and Protection Using TI High-Side Switch Controllers | PDF | HTML | 17 Oct 2024 | |
| Application note | Achieving Reverse Battery Protection Using TI High Side Switch Controllers | PDF | HTML | 25 Apr 2023 | |
| User guide | TPS48110Q1EVM: Evaluation Module for Smart High-Side Driver TPS48110-Q1 (Rev. A) | PDF | HTML | 21 Oct 2022 | |
| User guide | TPS48111Q1EVM: Evaluation Module for Smart High-Side Driver TPS48111-Q1 (Rev. A) | PDF | HTML | 21 Oct 2022 | |
| Functional safety information | TPS4811x-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 27 May 2022 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
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Evaluation board
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Calculation tool
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Supported products & hardware
Products
High-side switch controllers
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGX) | 19 | Ultra Librarian |
Ordering & quality
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