Infineon Technologies TLE7188F

Overview

TLE7188F from Infineon Technologies is a 3-phase high- and low-side MOSFET bridge driver IC for automotive motor control, featuring six independent gate drivers (3 high-side + 3 low-side), integrated charge pumps for high-side operation down to 5.5 V supply, 150 ns typical rise/fall times, and built-in short-circuit, overcurrent, overvoltage, undervoltage, and thermal protection. It drives external N-channel MOSFETs with up to 400 nC gate charge in cooling fans, water pumps, and electric power steering systems.

For engineers reviewing the TLE7188F datasheet, TLE7188F pinout, TLE7188F application, or TLE7188F equivalent, key selection criteria include its VQFN-48 package with exposed thermal slug, TTL-compatible logic inputs, 0–100% PWM duty cycle support, integrated current-sense amplifier chain (3× shunt signal conditioning), and AEC-Q100 qualification for automotive 12 V power net environments.

Technical Context

The TLE7188F implements dual independent charge pump circuits (CH1/CL1/CB1 and CH2/CL2/CB2) enabling high-side gate drive at VS as low as 5.5 V, with internal dead-time insertion and shoot-through prevention logic between complementary IHx/ILx input pairs. Each of the six output stages delivers ±1 A peak gate current with rail-to-rail voltage capability (VGH up to 55 V, VGL up to 18 V).

It integrates three precision current-sense amplifiers (VO1–VO3) with dedicated ISPx/ISNx inputs and reference buffer (VRI/VRO), supporting bidirectional shunt-based phase current measurement. Fault management includes two ERR pins with prioritized diagnostic reporting (ERR1 for critical faults like short circuit or overtemperature; ERR2 for warnings like overcurrent or UVLO).

Key Specifications

Pinout & Package

VQFN-48 package with 7 mm × 7 mm body, 0.5 mm pitch, and exposed thermal pad (EP) on underside for enhanced PCB heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase gate driver applications.

Compared with BD9M500MUV and UCC27211, the TLE7188F uniquely integrates automotive-grade protection, charge-pump-enabled low-voltage operation, and three-channel current sensing in one VQFN-48 package - eliminating four external ICs and reducing PCB area by >35% in AEC-Q100-compliant motor modules.

Availability

TLE7188F is available at Aetrix Electronics and suitable for cooling fan control, electric power steering, and water pump drive applications requiring stable component supply, long-term automotive lifecycle support, and RoHS-compliant green manufacturing.

Supply support for TLE7188F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with leadership in high-reliability automotive-grade silicon.

The TLE7188F belongs to Infineon's TLE automotive power driver family, engineered specifically for robust 3-phase motor control in 12 V vehicle networks - emphasizing functional safety, cold-crank resilience, and integration density for space-constrained ECUs.

FAQ

What is the minimum supply voltage for reliable high-side gate drive?

The TLE7188F maintains functional high-side gate drive down to VS = 5.5 V thanks to its dual integrated charge pumps, which generate ≥10 V gate-source voltage for external N-channel MOSFETs even during automotive cold-crank conditions. This is verified in Section 4.2 (Functional Range) and Figure 12 of the datasheet, where V_GS(HS) remains ≥10 V across the full 5.5–45 V input range.

How does the short-circuit protection operate without external components?

Short-circuit protection uses internal desaturation detection by monitoring VDH (high-side drain voltage) during the on-state. When VDH exceeds a threshold set by the SCDL pin voltage, the driver disables the affected high-side output within 1 µs and asserts ERR1. No external comparators or timers are needed - all logic and timing are embedded in the IC per Section 5.2.1.

Can the TLE7188F drive MOSFETs with gate charges exceeding 400 nC?

No - the datasheet specifies 400 nC as the maximum gate charge supported with guaranteed 150 ns rise/fall times and thermal stability. Driving higher-Q devices risks excessive switching losses, gate driver thermal overload, and potential violation of the ±1 A peak output current limit. For >400 nC MOSFETs, external gate resistors or parallel drivers are required, but not validated by Infineon.

Is the VQFN-48 package lead-free and RoHS compliant?

Yes - the TLE7188F is explicitly marked "Green Product (RoHS compliant)" in the Overview section of the datasheet (page 3), and its package marking "TLE7188F VQFN-48" conforms to JEDEC standard MS-012AC with lead-free solderable terminations. The device meets EU RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21.