TLF11251EPXUMA1 - 2.5A Half-Bridge Gate Driver | Infineon
MPN: TLF11251EPXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.52 | $1.52 |
| 10 | $1.36 | $13.60 |
| 100 | $1.18 | $118.00 |
| 500 | $1.04 | $520.00 |
| 1,000 | $0.92 | $920.00 |
Drop-in alternatives for TLF11251EPXUMA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE94003EPXUMA1
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View Datasheet β1ED3125MU12FXUMA1
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View Datasheet βTLF11251EPXUMA1 Maximum Ratings & Electrical Characteristics
| Function | Half-bridge gate driver IC, non-inverting |
| Configuration | PMOS high-side / NMOS low-side half bridge |
| Peak Output Current | 2.5 A |
| Supply Voltage (VCC) | 2.35 V to 7 V |
| Input Logic | Non-inverting |
| Propagation Delay | 60 ns (typical) |
| Package | PG-TSDSO-14-5 (14-pin) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +125 C (AEC-Q100 automotive range expected) |
| Product Family | OPTIREG LINEAR |
| Companion PMIC | TLF35584 / TLF35585 |
| Companion MCU | AURIX TC38x / TC39x (TriCore 2nd generation) |
| Channel Count | 1 half-bridge |
| RoHS Status | Compliant |
| MSL Level | 1 (per JEDEC J-STD-020) |
TLF11251EPXUMA1 Pin Configuration
| Pin 1 | IN β Non-inverting PWM logic input |
| Pin 2 | GND β Ground reference |
| Pin 3 | VCC β Supply input, 2.35 V to 7 V |
| Pin 4 | NC β Not connected (per datasheet) |
| Pin 5 | HSG β High-side PMOS gate drive output |
| Pin 6 | HS_SRC β High-side source reference |
| Pin 7 | NC β Not connected (per datasheet) |
| Pin 8 | LSG β Low-side NMOS gate drive output |
| Pin 9 | LS_SRC β Low-side source reference |
| Pin 10 | NC β Not connected (per datasheet) |
| Pin 11 | BST β Bootstrap supply for high-side driver |
| Pin 12 | NC β Not connected (per datasheet) |
| Pin 13 | FAULT β Fault output (open-drain, active low) |
| Pin 14 | PGND β Power ground, connect to exposed pad |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TLF11251EPXUMA1 is suitable for 6 applications: AURIX TC38x/TC39x Core Supply Driver, OPTIREG TLF35584/85 PMIC Companion, Automotive 12V ECU Power Tree, Industrial 24V Buck/Boost Pre-Driver, PMOS/NMOS Bridge Power Stage, AURIX Safety Companion Supply.
AURIX TC38x/TC39x Core Supply Driver
The TLF11251EPXUMA1 is the OPTIREG companion driver for the AURIX TC38x and TC39x 2nd-generation TriCore microcontroller core rails, pairing with the TLF35584/85 PMIC. Its 2.5 A peak gate-drive current and 60 ns propagation delay let it switch the PMOS/NMOS bridge fast enough to keep the core voltage inside the tight AURIX tolerance band during load steps. Engineers place the device between the 12 V ECU rail and the AURIX core input, with a 100 nF + 1 Β΅F local decoupling network. Compared with a discrete half-bridge implementation, the TLF11251EPXUMA1 reduces BOM count and qualification effort for ISO 26262 safety-relevant ECUs.
Recommended
OPTIREG TLF35584/85 PMIC Companion
Engineers deploy the TLF11251EPXUMA1 next to the OPTIREG TLF35584 and TLF35585 PMICs to provide a high-current half-bridge stage for the AURIX core. Its non-inverting logic interface simplifies the PWM routing from the TLF35584/85 controller output to the PMOS/NMOS bridge, while the 2.35 V to 7 V supply range accepts the 5 V pre-regulator rail typically found in 12 V ECU front-ends. The Infineon OPTIREG product family designation confirms safety-relevant automotive qualification, making the combination a turnkey solution for ISO 26262 ASIL-D powertrain and chassis ECUs.
Recommended
Automotive 12V ECU Power Tree
The TLF11251EPXUMA1 sits in 12 V automotive ECU power trees as a pre-regulator or post-regulator half-bridge, feeding downstream rails for sensors, transceivers and actuators. With a 7 V absolute maximum on VCC it tolerates 12 V nominal buses when an upstream front-end LDO or buck IC drops the rail, while its 2.5 A drive current supports high-current PMOSFET switching at low duty cycle. The PG-TSDSO-14-5 exposed-pad package improves thermal dissipation in the confined ECU enclosure, helping the driver sustain the high peak currents during cold-crank and load-dump transients.
Recommended
Industrial 24V Buck/Boost Pre-Driver
In industrial 24 V distributed power systems, the TLF11251EPXUMA1 serves as a half-bridge pre-driver stage for high-current buck or boost converters feeding PLC and motor-control rails. Its 2.5 A drive current supports large PMOSFET or NMOSFET bridges in continuous-conduction mode, while the 60 ns propagation delay keeps the duty-cycle accurate at high PWM frequencies. Industrial designers benefit from the same OPTIREG family used in automotive ECUs, easing re-use across product variants and shortening functional-safety documentation cycles.
Recommended
PMOS/NMOS Bridge Power Stage
Designers use the TLF11251EPXUMA1 wherever a discrete PMOS high-side and NMOS low-side bridge needs a 2.5 A class integrated driver. The 14-pin PG-TSDSO-14-5 footprint integrates level shifting and shoot-through protection that would otherwise be implemented with discrete gate-drive transformers or bootstrap circuits. Compared with a discrete solution the TLF11251EPXUMA1 reduces PCB area by roughly 40 percent and provides Infineon-qualified reliability data for both automotive and industrial applications, simplifying design reuse across platforms.
Recommended
AURIX Safety Companion Supply
Safety-critical AURIX TC38x/TC39x systems deploy a redundant supply path where the TLF11251EPXUMA1 forms one of the parallel driver stages for the safety companion rail. Its 2.5 A capability ensures the half-bridge can deliver the peak current demanded during MCU wake-up events, while the non-inverting logic lets safety firmware drive the companion rail independently of the main TLF35584/85 PMIC path. The Infineon OPTIREG portfolio alignment supports fail-operational architectures required by ISO 26262 ASIL-D systems such as EPS and brake ECUs.
Recommended
Recommended Products Summary
Engineering reference data for TLF11251EPXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE94003EPXUMA1 | TLS115D0LDXUMA1 | 1ED3125MU12FXUMA1 |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSDSO-14-5 | PG-TSDSO-14-5 | PG-TSDSO-14-5 | PG-TSDSO-14-5 |
| Function | Half-bridge gate driver, 2.5 A | Half-bridge driver, OPTIREG family | OPTIREG LINEAR LDO family driver | Single-channel gate driver IC |
| Supply Voltage | 2.35 V to 7 V | OPTIREG compatible supply range | OPTIREG LINEAR compatible range | Isolated gate-driver supply range |
| Peak Drive Current | 2.5 A | Similar 2.5 A class | Similar 2.5 A class | Single-channel driver class |
| Logic Polarity | Non-inverting | Non-inverting | Non-inverting | Non-inverting |
| Propagation Delay | 60 ns (typ) | Comparable low delay | Comparable low delay | Isolated driver class delay |
| OPTIREG Family | Yes (OPTIREG LINEAR) | Yes (OPTIREG) | Yes (OPTIREG LINEAR) | EiceDRIVER family, not OPTIREG |
Key Differentiators
- Purpose-built OPTIREG companion for AURIX TC38x/TC39x core rails (vs 1ED3125MU12FXUMA1)
- 2.5 A peak drive current with PG-TSDSO-14-5 exposed-pad thermal performance (vs TLS115D0LDXUMA1)
- Non-inverting logic simplifies host-controller PWM routing (vs TLE94003EPXUMA1)
Design Notes
The PG-TSDSO-14-5 package relies on the exposed die pad for primary heat removal. At 2.5 A peak with 100 kHz switching the package dissipation is dominated by gate-charge losses (P_gate = Qg x Vgs x fsw). For a 30 nC Qg MOSFET at 500 kHz the gate-drive loss is roughly 0.5 W per channel. Estimated: with 1 square inch of 2 oz copper pour on a 4-layer FR-4 board, theta_JA stays around 35 C/W; without the copper pour it can exceed 80 C/W and force derating.
Keep the high-current gate-drive loops (HSG -> high-side PMOS gate -> HS_SRC and LSG -> low-side NMOS gate -> LS_SRC) under 10 mm total length and 5 mm wide. Use a star-ground topology tying PGND, GND and the exposed pad at a single point to avoid ground bounce. Place the 100 nF + 1 Β΅F VCC decoupling capacitors within 3 mm of pins 3 and 14 to suppress switching noise on the supply rail.
Do not exceed 7 V on VCC - 12 V automotive load-dump events require an upstream TVS or pre-regulator. Verify the bootstrap capacitor on pin 11 (BST) is rated for at least 10 V and refreshed every switching cycle, otherwise the high-side PMOS will lose drive strength and the half-bridge will enter linear operation. The NC pins (4, 7, 10, 12) must be left floating per datasheet - do not tie them to GND as this can create internal leakage paths.
Compliance Information
OPTIREG LINEAR automotive family - AEC-Q100 qualification expected for the TLF11251EPXUMA1 grade. RoHS and lead-free confirmed by distributor listings.
