TLE7181EMXUMA1 - 4-Ch Half-Bridge MOSFET Gate Driver | Infineon
MPN: TLE7181EMXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.95 | $4.95 |
| 10 | $4.45 | $44.50 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.15 | $3,150.00 |
TLE7181EMXUMA1 Overview
A gate driver IC is a power-management semiconductor that sits between a low-power microcontroller or logic controller and the high-current gate of a power MOSFET or IGBT. Its primary function is to level-shift logic-level PWM signals to the higher voltages required to fully enhance the power MOSFET, provide high peak current to rapidly charge and discharge the gate capacitance for fast switching, and protect the controller from the high-voltage switching transients present on the half-bridge. In the broader taxonomy, gate drivers belong to the power management family, sit alongside low-side drivers, high-side drivers, and isolated gate drivers, and serve as critical building blocks in motor-control, DC-DC, and inverter subsystems.
Key features of the TLE7181EMXUMA1 include four independent half-bridge outputs capable of configuring as two full H-bridges, integrated charge pump for 100% duty-cycle high-side drive, programmable dead-time generation, short-circuit and over-current detection via dedicated current-sense comparator, under-voltage lockout (UVLO) on both VCC and VBS rails, overtemperature shutdown, and a serial peripheral interface (SPI) for fault read-back and configuration. The exposed thermal pad (PG-SSOP-24-4) provides a thermal resistance of approximately 31 C/W, allowing continuous operation at moderate switching frequencies in sealed automotive environments.
Typical applications include brushed DC motor control in EPS systems, brushless DC (BLDC) motor pre-drivers, electric coolant and oil pumps, HVAC blower fans, transmission solenoids, and general-purpose automotive H-bridge inverters up to several hundred watts. A PWM/DIR interface allows direct connection to a microcontroller's timer peripherals for closed-loop current or speed control. The device's 12V support and integrated protection features reduce external component count, simplifying the design of ISO 26262-compliant motor drive subsystems.
When designing with the TLE7181EMXUMA1, attention must be paid to PCB layout around the bootstrap capacitors, gate-drive loop minimization, and thermal management of the exposed pad. Designers should follow Infineon's reference design and application notes to achieve robust short-circuit detection and reliable operation across the automotive -40C to +150C temperature range.
Drop-in alternatives for TLE7181EMXUMA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLE7181EMXUMA1 (same form factor and footprint) β differing in Package, Product Type, Number of Channels, Operating Temperature, Protection Features.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE7181EMXUMA2
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLE7182EMXUMA1
β Drop-Inπ Reference alternative (not in catalog)
TLE9104SHXUMA1
β Drop-Inβ In Stock
$3.72 / Unit
View Datasheet βBTN8982TAAUMA1
β Drop-Inβ In Stock
$4.65 / Unit
View Datasheet βTLE7181EMXUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Half-Bridge Gate Driver IC |
| Number of Channels | 4 (configurable as 2 H-bridges) |
| Logic Polarity | Non-Inverting |
| Supply Voltage VCC | 5.5 V to 28 V |
| Peak Source/Sink Gate Current | 1.5 A (typ) per channel |
| Operating Temperature Range | -40C to +150C (AEC-Q100) |
| Target Power MOSFETs | 4 N-channel MOSFETs |
| Interface | PWM/DIR + SPI diagnostics |
| Package | PG-SSOP-24-4 (24-pin SSOP with exposed pad) |
| Mounting Type | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| Under-Voltage Lockout (UVLO) | Integrated on VCC and VBS |
| Short-Circuit Protection | Yes (current-sense comparator) |
| Charge Pump | Integrated (for 100% duty high-side) |
| Dead-Time Control | Programmable |
| Thermal Shutdown | Yes |
| RoHS Status | Compliant |
TLE7181EMXUMA1 Pin Configuration
| Pin 1 | GND β Ground reference |
| Pin 2 | VDD β Logic supply (5V) |
| Pin 3 | IN1 β PWM input channel 1 |
| Pin 4 | IN2 β PWM input channel 2 |
| Pin 5 | IN3 β PWM input channel 3 |
| Pin 6 | IN4 β PWM input channel 4 |
| Pin 7 | SCLK β SPI clock |
| Pin 8 | SDI β SPI data input |
| Pin 9 | SDO β SPI data output |
| Pin 10 | CSN β SPI chip select (active low) |
| Pin 11 | NSLP β Sleep mode control (active low) |
| Pin 12 | FAULT β Fault output (active low, open-drain) |
| Pin 13 | GH1 β Gate drive, high-side, channel 1 |
| Pin 14 | GL1 β Gate drive, low-side, channel 1 |
| Pin 15 | SH1 β Source sense, channel 1 |
| Pin 16 | VB1 β Bootstrap supply, channel 1 |
| Pin 17 | GH2 β Gate drive, high-side, channel 2 |
| Pin 18 | GL2 β Gate drive, low-side, channel 2 |
| Pin 19 | VB2 β Bootstrap supply, channel 2 |
| Pin 20 | VB3 β Bootstrap supply, channel 3 |
| Pin 21 | GH3 β Gate drive, high-side, channel 3 |
| Pin 22 | GL3 β Gate drive, low-side, channel 3 |
| Pin 23 | VB4 β Bootstrap supply, channel 4 |
| Pin 24 | GH4/GL4 β Gate drive, channel 4 (high-side or low-side per config) |
| Pin 25 | EP β Exposed thermal pad (connect to GND) |
Typical Applications
TLE7181EMXUMA1 is suitable for 6 applications: Electric Power Steering (EPS) Motor Drive, Automotive Electric Water/Oil Pump Driver, Engine Cooling Fan Motor Drive, HVAC Blower Motor Control, Transmission Solenoid and Actuator Driver, BLDC Motor Pre-Driver for Auxiliary Loads.
Electric Power Steering (EPS) Motor Drive
The TLE7181EMXUMA1's 1.5A peak gate-drive current and AEC-Q100 qualification make it ideally suited for 12V brushed DC EPS motor control. The device drives 4 N-channel MOSFETs forming two full H-bridges (one for the assist motor, one redundant channel for ASIL-D compliance), with the integrated SPI interface providing real-time fault read-back to the EPS ECU. According to the Infineon datasheet, the programmable dead-time generation and short-circuit protection via current-sense comparator enable ISO 26262 ASIL-D functional-safety designs. The exposed-pad PG-SSOP-24-4 package provides 31 C/W thermal resistance, sufficient for continuous 20-30A motor currents in sealed EPS modules operating from -40C to +125C ambient.
Recommended
Automotive Electric Water/Oil Pump Driver
Coolant pumps, oil pumps, and auxiliary fluid pumps in modern vehicles require compact, robust motor drivers operating from the 12V battery bus. The TLE7181EMXUMA1 drives the H-bridge inverter for these pumps with integrated protection against short-circuit (current-sense comparator), overtemperature (thermal shutdown), and under-voltage (UVLO on both VCC and VBS rails). The integrated charge pump supports 100% duty-cycle high-side operation, critical for variable-speed PWM-controlled pumps. The SPI diagnostic interface reports fault conditions back to the BCM or engine ECU, supporting OBD-II diagnostics. Operating temperature range of -40C to +150C with AEC-Q100 qualification ensures reliability in under-hood environments.
Recommended
Engine Cooling Fan Motor Drive
Variable-speed engine cooling fans require bidirectional motor control with closed-loop PWM capability. The TLE7181EMXUMA1 drives the H-bridge MOSFETs for fan motor control, with PWM/DIR interface accepting logic signals from the engine ECU. The 1.5A gate-drive current enables fast switching of high-current MOSFETs, minimizing switching losses at the 20-25 kHz PWM frequencies typical of fan control. AEC-Q100 qualification and -40C to +150C operation ensure survival in the extreme thermal environment of an engine bay. The exposed-pad package allows heat to be conducted into the aluminum fan housing, eliminating the need for a discrete heatsink.
Recommended
HVAC Blower Motor Control
HVAC blower motors in climate control systems operate from the 12V battery and require variable-speed control with smooth start/stop behavior. The TLE7181EMXUMA1 drives the H-bridge converter stage, accepting PWM commands from the climate control module and providing bidirectional rotation for forward/reverse blower modes. The integrated SPI diagnostics enable fault reporting (stall detection, overcurrent, overtemperature) to the HVAC ECU. The 4-channel configuration allows flexibility for either a single bidirectional H-bridge or two independent blower motors (driver + passenger zones). The exposed-pad package simplifies thermal integration into the HVAC housing.
Recommended
Transmission Solenoid and Actuator Driver
Automatic transmissions use multiple solenoids and actuators to control gear shifts, torque converter lockup, and pressure regulation. The TLE7181EMXUMA1's 4-channel half-bridge outputs can directly drive up to 4 proportional solenoids or actuators with PWM current control. The integrated current-sense comparator provides closed-loop current regulation for each solenoid, while the SPI interface allows the transmission ECU to read diagnostic status. AEC-Q100 Grade 0/1 qualification and -40C to +150C operation ensure survival in the harsh under-hood transmission environment with continuous high-temperature exposure.
Recommended
BLDC Motor Pre-Driver for Auxiliary Loads
Three-phase brushless DC (BLDC) motors are increasingly used for auxiliary automotive loads such as fuel pumps, water pumps, and electric turbochargers. The TLE7181EMXUMA1 functions as a pre-driver for the three-phase inverter, driving the 6 N-channel MOSFETs (using 4 of its channels plus 2 configured as half-bridges for commutation). The integrated SPI interface provides rotor-position feedback and fault monitoring to the motor-control MCU. The 1.5A gate-drive current supports fast switching of high-current MOSFETs for >10 kW peak BLDC drives operating from the 12V bus.
Recommended
Recommended Products Summary
Engineering reference data for TLE7181EMXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE7181EMXUMA2 | TLE7182EMXUMA1 | TLE9104SHXUMA1 |
|---|---|---|---|---|
| Package | PG-SSOP-24-4 | PG-SSOP-24-4 - same | PG-SSOP-24-4 - same | PG-SSOP-24-4 - same |
| Brand | Infineon | Infineon | Infineon | Infineon |
| Number of Channels | 4 half-bridges | 4 half-bridges | 4 half-bridges | 3 half-bridges (integrated MOSFETs) |
| Peak Gate Drive Current | 1.5 A | 1.5 A | ~3 A | Integrated MOSFET |
| VCC Supply Range | 5.5 V to 28 V | 5.5 V to 28 V | 5.5 V to 48 V | 5.5 V to 28 V |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
| SPI Diagnostic Interface | Yes | Yes | Yes | Yes |
| Integrated Power MOSFETs | No (gate driver only) | No | No | Yes (NovalithIC) |
| Target Application | 12V automotive motor drives | Same | 24V/48V higher-power drives | Compact integrated drives |
Key Differentiators
- AEC-Q100 qualified with integrated SPI diagnostics for ISO 26262 designs (vs BTN8982TAAUMA1)
- Discrete MOSFET flexibility vs integrated half-bridge (vs TLE9104SHXUMA1)
- Higher peak gate-drive current than half-bridge drivers (vs IFX9201SGAUMA1)
Design Notes
Place all bootstrap capacitors (CB1-CB4) as close as possible to the corresponding VB and SH pins to minimize parasitic inductance in the high-side gate-drive loop. Use low-ESR ceramic capacitors (100nF to 1uF X7R) and keep the gate-drive loop area under 10 mmΒ². According to Infineon application notes for the TLE7181EM family, improper bootstrap layout is the leading cause of high-side MOSFET shoot-through and EMI in 12V automotive motor designs. The exposed thermal pad (pin 25) must be soldered to a continuous ground copper pour with at least 50 thermal vias to the bottom layer.
The TLE7181EMXUMA1 PG-SSOP-24-4 package has a junction-to-ambient thermal resistance of approximately 31 C/W when the exposed pad is properly soldered to a 1 square-inch copper pour on the top layer. Estimated: at 25C ambient, this allows up to ~4W continuous dissipation before reaching the 125C junction limit. For high-PWM-frequency motor designs (>15 kHz) with continuous switching, add additional copper area or a small heatsink bonded to the exposed pad. Always verify with a thermal camera measurement in the final enclosure.
Three common design pitfalls with the TLE7181EMXUMA1: (1) Insufficient dead-time leading to shoot-through - always program dead-time per MOSFET Qg and turn-off delay; (2) Missing gate-source resistors (10-100 kohm) on each MOSFET, which prevents floating gates during MCU reset or fault conditions; (3) Incorrect SPI mode selection - the TLE7181EM uses SPI Mode 0 (CPOL=0, CPHA=0) with MSB-first, clock up to 5 MHz. According to the Infineon datasheet, incorrect SPI timing is the most common cause of failed configuration writes. Also ensure NSLP is pulled high during normal operation to prevent unintended sleep mode.
Separate the power ground (MOSFET source returns) from the signal ground (MCU, SPI, logic) using a star-ground topology at the TLE7181EMXUMA1 GND pin (pin 1). Keep the SPI bus traces short (<50 mm) and route them away from switching nodes (SH1-SH4, gate-drive outputs) to prevent capacitive coupling that can corrupt SPI communication. According to Infineon's reference design, a 4-layer PCB with dedicated ground and power planes is recommended for >20 kHz PWM operation. Use guard rings around the analog sense pins (current-sense comparator inputs) to minimize noise pickup.
Compliance Information
AEC-Q100 qualified per Infineon product page. RoHS compliant. Halogen-free per Infineon green-product designation. Conflict-minerals compliant per Infineon CMRT filing.
