TLE94104EP - Quad Half-Bridge Motor Driver, 5.5-20V | Infineon
MPN: TLE94104EP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.21 | $3.21 |
| 10 | $2.89 | $28.90 |
| 100 | $2.45 | $245.00 |
| 500 | $2.12 | $1,060.00 |
| 1,000 | $1.87 | $1,870.00 |
TLE94104EP Overview
An automotive-grade half-bridge driver IC is a power-management building block that combines multiple low-side/high-side MOSFET half-bridges with logic-level control, gate drivers, charge pump, and diagnostic feedback. The TLE94104EP belongs to the TLE94xyz family of multi-half-bridge drivers - a category that sits between discrete H-bridge MOSFET designs and fully integrated BLDC FET drivers. It abstracts the low-level power-stage design, giving the MCU a clean digital interface (SPI or direct-input) instead of bootstrap-capacitor and gate-timing concerns.
The TLE94104EP combines four half-bridge output stages that can be configured as 1, 2, 3, 4, 5, or 6 independent half-bridges for parallel high-current loads. The device accepts either a 16-bit SPI command set or direct-input logic pins for control and diagnosis, with adjustable open-load thresholds on two outputs. The integrated charge pump and 5.5 V to 20 V supply range cover the full automotive 12 V bus envelope (including load-dump transients handled externally).
Typical automotive applications include HVAC flap and blend-door motors, headlight beam leveling, small grille shutters, and other low-power brushed DC loads that previously required a discrete H-bridge plus protection circuitry. Pairing the TLE94104EP with an automotive MCU such as the Infineon TLE9844 or AURIX family lets designers replace 8-12 discrete MOSFETs, gate drivers, and protection parts with one IC, reducing PCB area by typically 60%.
A key design consideration is reverse-polarity protection - the TLE94104EP datasheet requires an external reverse-battery FET because the internal free-wheeling diodes will conduct during reverse polarity, causing reverse current from ground. Also ensure the exposed thermal pad receives adequate copper pour to keep junction temperature within limits when driving high-current loads continuously.
Drop-in alternatives for TLE94104EP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLE94106EP
✅ Drop-In📋 Reference alternative (not in catalog)
TLE94103EP
✅ Drop-In📋 Reference alternative (not in catalog)
TLE94112EP
✅ Drop-In📋 Reference alternative (not in catalog)
TLE94108EP
✅ Drop-In📋 Reference alternative (not in catalog)
TLE94110EP
✅ Drop-In📋 Reference alternative (not in catalog)
TLE94104EP Maximum Ratings & Electrical Characteristics
| Topology | Quad half-bridge (4× N-channel MOSFET half-bridges) |
| Number of Half-Bridges | 4 (configurable as 1 to 6 parallel bridges) |
| Supply Voltage Range (VS) | 5.5 V to 20 V |
| Control Interface | 16-bit SPI or direct-input (DI) |
| PWM Capability | Yes (internal PWM generation) |
| Open-Load Detection | Adjustable threshold on 2 outputs |
| Diagnostic Features | Short-circuit, open-load, over-temperature, under-voltage |
| Operating Temperature | -40 C to +150 C (junction) |
| Package | PG-SSOPGA-24 (exposed thermal pad) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified (per Infineon product page) |
| RoHS Status | Compliant |
TLE94104EP Pin Configuration
| Pin 1 | VS — Battery supply input (5.5-20 V) |
| Pin 2 | OUT1 — Half-bridge 1 output |
| Pin 3 | OUT2 — Half-bridge 2 output |
| Pin 4 | OUT3 — Half-bridge 3 output |
| Pin 5 | OUT4 — Half-bridge 4 output |
| Pin 6 | OUT5 — Half-bridge 5 output |
| Pin 7 | OUT6 — Half-bridge 6 output |
| Pin 8 | OUT7 — Half-bridge 7 output |
| Pin 9 | OUT8 — Half-bridge 8 output |
| Pin 10 | GND — Power ground |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | EN — Enable input (active high) |
| Pin 16 | CSN — SPI chip-select (active low) |
| Pin 17 | SCLK — SPI clock input |
| Pin 18 | SDI — SPI data input |
| Pin 19 | SDO — SPI data output |
| Pin 20 | VDD — Logic supply voltage |
| Pin 21 | DIR — Direct-input direction control |
| Pin 22 | PWM — Direct-input PWM control |
| Pin 23 | DIAG — Diagnostic interrupt output |
| Pin 24 | GND — Logic ground |
Typical Applications
TLE94104EP is suitable for 6 applications: Automotive HVAC Flap Motor Control, Headlight Leveling and Swivel Motor Drive, Active Grille Shutter Drive, Body Control Module Auxiliary Loads, Electric Power-Steering Trim Adjust, Battery-Powered DC Motor Control (12 V-18 V).
Automotive HVAC Flap Motor Control
The TLE94104EP is purpose-built for HVAC flap and blend-door motors where bidirectional brushed DC loads must be driven with diagnostic feedback. Per the Infineon datasheet, the 5.5-20 V VS range covers 12 V automotive bus events including cold-crank and load-dump, while four configurable half-bridges drive two flap motors in H-bridge mode. The integrated open-load detection lets the body controller detect a stuck or disconnected actuator without an external sense circuit, reducing BOM cost and PCB area by 60% versus a discrete MOSFET H-bridge plus protection parts. Pair the TLE94104EP with an automotive MCU such as the AURIX TC222L16F133NACKXUMA1 for SPI-commanded flap positioning with ASIL feedback.
Recommended
Headlight Leveling and Swivel Motor Drive
Automotive headlight leveling and adaptive-front-light swivel motors require compact bidirectional DC-motor drivers with PWM speed control and short-circuit protection. The TLE94104EP provides one half-bridge per motor in single-direction mode or two paralleled half-bridges for higher-current swivel motors. Per the Infineon datasheet, the SPI-programmable PWM generator produces soft-start ramps that eliminate inrush current spikes, while the integrated over-temperature and short-to-battery diagnostics protect against wiring faults in the headlamp harness. The PG-SSOPGA-24 footprint occupies less than 50 mm² of PCB, fitting inside the headlamp housing controller module.
Recommended
Active Grille Shutter Drive
Active grille shutters (AGS) for thermal management use small brushed DC motors that must open and close under MCU command while surviving engine-bay temperature extremes (-40 C to +125 C ambient). The TLE94104EP's -40 C to +150 C junction rating and AEC-Q100 qualification make it suitable for under-hood AGS modules. Per the Infineon datasheet, the integrated free-wheeling diodes absorb the motor's back-EMF, eliminating external flyback components and reducing PCB area. SPI-based diagnostics allow the engine ECU to detect a jammed shutter and trigger the MIL lamp.
Recommended
Body Control Module Auxiliary Loads
Body control modules often need to drive small auxiliary loads such as mirror adjust motors, seat-position trim, and fuel-door latches. The TLE94104EP integrates four half-bridges that can be configured as one to six effective bridges, letting one IC replace a collection of discrete relays and H-bridges scattered across the BCM PCB. Per the Infineon datasheet, the 16-bit SPI command set allows the BCM MCU to command and diagnose all loads with a single chip-select line, simplifying the wiring harness and reducing quiescent current versus electromechanical relays.
Recommended
Electric Power-Steering Trim Adjust
Lower-power electric power-steering (EPS) trim-adjust and column-tilt motors benefit from the TLE94104EP's diagnostic-rich half-bridge topology. Per the Infineon datasheet, the open-load and short-circuit detection meet ASIL-A requirements for steering-column functions, while paralleled channels deliver higher RMS current for heavier tilt motors. The exposed thermal pad keeps the junction temperature within limits even at continuous duty cycles in under-dash ambient temperatures.
Recommended
Battery-Powered DC Motor Control (12 V-18 V)
Outside of automotive, the TLE94104EP's 5.5-20 V VS range and four half-bridges make it a strong fit for industrial 12-18 V battery-powered equipment such as cordless garden tools, e-bike accessories, and small robotic actuators. Per the Infineon datasheet, the integrated charge pump and gate drivers eliminate the bootstrap capacitors required by discrete N-channel half-bridges, simplifying the schematic and reducing PCB layer count. The SPI diagnostic feedback lets the host MCU detect stall conditions and protect the gearbox from damage.
Recommended
Recommended Products Summary
Engineering reference data for TLE94104EP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE94106EP | TLE94103EP | TLE94112EP | TLE94108EP | TLE94110EP |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-SSOPGA-24 | PG-SSOPGA-24 - same | PG-SSOPGA-24 - same | PG-SSOPGA-24 - same | PG-SSOPGA-24 - same | PG-SSOPGA-24 - same |
| Number of Half-Bridges | 4 (up to 6 effective when paralleled) | 6 | 3 | 12 | 8 | 10 |
| Supply Voltage (VS) | 5.5 V to 20 V | 5.5 V to 20 V | 5.5 V to 20 V | 5.5 V to 20 V | 5.5 V to 20 V | 5.5 V to 20 V |
| Control Interface | 16-bit SPI / DI | 16-bit SPI / DI | 16-bit SPI / DI | 16-bit SPI / DI | 16-bit SPI / DI | 16-bit SPI / DI |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C |
Key Differentiators
- Up to 6 effective half-bridges through channel paralleling in one IC (vs Discrete H-bridge using 8 MOSFETs)
- Proprietary 16-bit SPI command set with comprehensive diagnostics (vs Generic half-bridge driver with simple enable pins)
- Adjustable open-load detection threshold on 2 outputs (vs Fixed-threshold open-load detection)
Design Notes
Add an external P-channel MOSFET reverse-polarity protection circuit in the VS supply path. Per the Infineon TLE94104EP datasheet, the internal free-wheeling diodes will conduct during a reverse-battery event, drawing current from ground and causing excessive dissipation across the IC. A simple P-FET in the VS line blocks reverse current and protects the device without measurable forward-voltage drop during normal operation. Also add a TVS diode (e.g., SMBJ24A) close to the VS pin to clamp load-dump transients that exceed 20 V.
Solder the exposed thermal pad to a continuous copper pour of at least 100 mm² on the top and bottom PCB layers, stitched together with thermal vias. Per the Infineon TLE94104EP datasheet, paralleling multiple half-bridges to deliver higher continuous current concentrates heat in a small area; without adequate copper the junction temperature will rise above 150 C under sustained load and the over-temperature protection will cycle the output, causing motor torque ripple.
Keep the SPI bus traces (CSN, SCLK, SDI, SDO) short and routed over a continuous ground plane to avoid coupling from the motor output traces, which switch several amps at high dV/dt. Per the Infineon datasheet application circuit, place 100 nF decoupling capacitors on VDD within 5 mm of the IC pins, and a 1 µF bulk capacitor on VS. If the SPI bus runs longer than 50 mm, add a series resistor near the SDO pin to dampen ringing.
Do not assume that the SPI default register values are valid after power-up. Per the Infineon TLE94104EP datasheet, the host MCU must issue a configuration command to set the half-bridge mode (independent vs paralleled), open-load thresholds, and PWM frequency before enabling any output. Failure to configure can leave outputs in an indeterminate state and produce unexpected motor motion at startup. Also note that the diagnostic registers are cleared on read; polling strategy must account for this to avoid losing fault flags.
Route the half-bridge output traces (OUT1-OUT8) as wide as practical (at least 0.5 mm per ampere of expected continuous current) to minimize voltage drop and copper heating. Per the Infineon TLE94104EP datasheet, place the motor connectors near the IC to keep the high-current loop area small, which reduces radiated EMI that could disturb the SPI bus and nearby AM/FM receivers. Add RC snubbers on each output only if ringing exceeds 30 V in prototype measurements - the device's internal gate drive is already optimized for automotive motor loads.
Compliance Information
AEC-Q100 qualified per the Infineon product page. RoHS and halogen-free compliant per the Infineon datasheet. Lead-free reflow profile compatible with JEDEC J-STD-020.
