TLD5190QVXUMA1 - 55V H-Bridge DC-DC LED Controller | Infineon
MPN： TLD5190QVXUMA1 ✓ 啟用中TLD5190QVXUMA1 概覽
An LED driver controller is a power-management IC that regulates current through high-brightness LEDs by converting a variable battery or bus voltage into a precisely controlled output. The TLD5190QVXUMA1 is a controller (not a fully integrated switch) and therefore requires external MOSFETs in an H-bridge topology. The H-bridge architecture enables seamless buck-boost operation, which is critical in automotive applications where the battery voltage can rise to 40 V on load-dump events yet the LED forward voltage may sit below, at, or above the input rail depending on current and temperature.
Key differentiating features include a programmable switching frequency of 200 kHz to 700 kHz, spread-spectrum frequency modulation (SSFM) for EMI reduction, integrated protection (open-LED, short-to-Ground, short-to-Battery, overtemperature), and an analog + PWM dimming interface for brightness control. The device supports both analog (0-100% via external voltage) and digital PWM dimming with high contrast ratios, making it suitable for matrix-LED and adaptive driving beam (ADB) applications.
The TLD5190QVXUMA1 uses a peak-current-mode control architecture with built-in slope compensation and a synchronous rectification gate driver for both high-side and low-side MOSFETs. The H-bridge topology allows the controller to operate as a step-down (buck), step-up (boost), or buck-boost converter without mode-change transients, ensuring smooth LED current during VIN transients such as cranking pulses.
Typical applications include automotive LED headlamps (low beam, high beam, DRL), fog lights, rear combination lamps, signal lighting, and general high-brightness LED drivers where efficiency above 90% is mandatory for thermal management. The wide 4.5V to 40V input range with load-dump tolerance makes it ideal for 12V and 24V automotive electrical systems.
When designing with this controller, pay close attention to the gate-drive layout, MOSFET selection for the chosen switching frequency, and inductor/ capacitor sizing for the target current ripple. The exposed thermal pad of the VQFN-48 must be soldered to a sufficient copper pour to meet the thermal resistance specified in the manufacturer datasheet.
This page synthesizes distributor pricing, drop-in alternatives sourced from cross-reference databases, and practical design notes not consolidated on the manufacturer product page, giving engineers a faster path from MPN to BOM.
直接替換替代品，適用於 TLD5190QVXUMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLD5190QVXUMA1 （相同外形與佔位） — 差異在於 Package, Operating Temperature Range, Family, Input Voltage Range, Topology.
TLD5097EPXUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLD1125ELXUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLD5190QVXUMA1 最大額定值與電氣特性
| 拓撲 | Synchronous H-Bridge (Buck / Boost / Buck-Boost DC-DC Controller) |
| 輸入電壓範圍 | 4.5 V to 40 V (load-dump tolerant up to 55 V transient) |
| 輸出電壓範圍 | 2 V to 55 V |
| 切換頻率 | 200 kHz to 700 kHz (programmable) |
| Peak Efficiency | 96% |
| Dimming Interface | Analog (0-100%) and PWM Dimming |
| Spread-Spectrum Frequency Modulation | Yes (SSFM, EMI reduction) |
| Control Architecture | Peak Current Mode with slope compensation |
| Gate Drivers | Integrated high-side + low-side for 4 external MOSFETs (H-bridge) |
| 封裝 | VQFN-48 (PG-VQFN-48-31) with exposed thermal pad, 7x7 mm |
| AEC-Q100 Qualification | Qualified (automotive grade) |
| 工作溫度範圍 | -40 C to +150 C (junction) |
| Protections | Open-LED, short-to-GND, short-to-Battery, overtemperature, overcurrent |
| MSL 等級 | 3 (per JEDEC J-STD-020) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Family | LITIX Power (Infineon automotive LED driver family) |
TLD5190QVXUMA1 vqfn-48 (pg-vqfn-48-31) with exposed thermal pad, 7x7 mm 腳位配置指南
TLD5190QVXUMA1（vqfn-48 (pg-vqfn-48-31) with exposed thermal pad, 7x7 mm 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： TLD5190QVXUMA1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLD5190QVXUMA1 適用於 7 應用s: Automotive LED Headlamp (Low/High Beam), Daytime Running Light (DRL) Driver, Rear Combination Lamp and Signal Lighting, 24V Commercial Vehicle LED Lighting, Matrix-LED and Adaptive Driving Beam (ADB), Industrial High-Brightness LED Driver, Two-Wheeler and Motorcycle LED Headlamp.
Automotive LED Headlamp (Low/High Beam)
The TLD5190QVXUMA1 is purpose-built for automotive LED headlamp low-beam and high-beam drivers. Its 4.5V to 40V input range with 55V load-dump tolerance directly meets ISO 7637-2 12V transients, while the synchronous H-bridge topology keeps LED current constant as the headlamp string voltage crosses the battery rail during cranking pulses. The 96% efficiency keeps dissipation low in the sealed lamp housing, and the integrated analog+PWM dimming interface supports adaptive driving beam (ADB) matrix-LED modulation above 1 kHz PWM without visible flicker.
推薦
Daytime Running Light (DRL) Driver
DRL modules typically operate below 25W total LED power, and the TLD5190QVXUMA1 drives them efficiently with a compact external H-bridge of four small MOSFETs. The 200 kHz to 700 kHz programmable switching range lets designers pick a frequency that avoids AM-band interference, while the integrated spread-spectrum modulation (SSFM) attenuates peak EMI by up to 10 dB, simplifying CISPR 25 Class 5 compliance. Analog dimming through the SET pin enables smooth daylight-to-night brightness transitions in adaptive front-lighting systems.
推薦
Rear Combination Lamp and Signal Lighting
Brake, tail, and turn-indicator LEDs in the rear combination lamp demand high reliability and the ability to handle constant on/off cycling with PWM dimming for sequential turn signals. The TLD5190QVXUMA1's integrated protections - open-LED, short-to-GND, short-to-Battery, and overtemperature shutdown with hysteresis - eliminate the need for external fusing. The H-bridge topology also supports matrix-style tail-light signatures where different LED segments must be driven independently while sharing one DC-DC stage.
推薦
24V Commercial Vehicle LED Lighting
The TLD5190QVXUMA1's 4.5V to 40V continuous input also covers 24V truck and bus electrical systems, including double-battery jump-start conditions and load-dump transients defined by ISO 7637-2 for 24V networks. The buck-boost capability delivers stable LED current regardless of whether the LED string voltage is above or below the bus, which is critical in cold-crank scenarios where 24V battery voltage can sag briefly. AEC-Q100 qualification ensures the part survives the harsher temperature and vibration profiles of commercial vehicle applications.
推薦
Matrix-LED and Adaptive Driving Beam (ADB)
Matrix-LED headlamps dynamically shade pixels to avoid dazzling oncoming traffic, and the TLD5190QVXUMA1 supports this with its analog and PWM dimming interface capable of high contrast ratios at dimming frequencies above 1 kHz. The synchronous H-bridge keeps the LED string voltage stable while individual pixels are switched by external MOSFETs or LED driver ICs, preventing the global current drift that would otherwise be visible as brightness pumping. This combination of efficiency, EMI control, and dimming fidelity is what distinguishes the TLD5190QVXUMA1 from simpler buck LED drivers in the LITIX family.
推薦
Industrial High-Brightness LED Driver
Beyond automotive, the TLD5190QVXUMA1 fits industrial high-bay and outdoor LED luminaires where the wide input range, 96% efficiency, and rich protection set simplify design. The H-bridge buck-boost topology drives LED strings from 24V or 48V industrial rails where the LED forward voltage may sit at any level depending on current and temperature. AEC-Q100 qualification also means the part tolerates harsher thermal environments than consumer-grade LED drivers, extending luminaire lifetime in outdoor installations.
推薦
Two-Wheeler and Motorcycle LED Headlamp
Motorcycle and e-bike headlamps operate from a 12V lead-acid or lithium battery that can swing from 9V during cranking up to 40V on load-dump, and the TLD5190QVXUMA1's 4.5V-40V input plus load-dump tolerance covers this range without external clamping. Its small VQFN-48 footprint and external MOSFET design let designers shrink the driver PCB to fit inside the constrained headlamp housing of two-wheelers. The 96% efficiency reduces thermal stress on the housing, an important consideration when the lamp is sealed against water ingress.
推薦
推薦產品摘要
工程參考資料，適用於 TLD5190QVXUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLD5097EPXUMA1 | TLD1125ELXUMA1 |
|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | VQFN-48 (PG-VQFN-48-31, 7x7 mm) | VQFN-48 - same footprint | VQFN-48 - same footprint |
| Topology | Synchronous H-Bridge (Buck / Boost / Buck-Boost) | Buck-only switching controller | Linear LED driver |
| Switching Frequency | 200 kHz to 700 kHz | 100 kHz to 500 kHz | N/A (linear) |
| Peak Efficiency | 96% | 92% | N/A (linear, V_IN-dependent) |
| Maximum LED Current | Set by external MOSFETs (multi-amp capable) | Set by external MOSFETs | Up to 150 mA |
| AEC-Q100 Qualification | Yes | Yes | Yes |
| Approx. Unit Price (qty 100) | $3.28 | $2.10 | $1.45 |
主要差異化特點
- Synchronous H-bridge buck-boost topology with 96% efficiency (對比TLD5097EPXUMA1)
- Multi-amp output capability via external MOSFETs (對比TLD1125ELXUMA1)
- 200 kHz to 700 kHz programmable frequency plus integrated SSFM (對比TLD5097EPXUMA1)
設計說明
The TLD5190QVXUMA1 does not dissipate significant power itself because the switching MOSFETs are external, but the gate-drive current and quiescent consumption still contribute. Estimated: with a 700 kHz switching frequency, four 30 nC-gate MOSFETs, and 12V gate drive, gate-charge loss is approximately 0.7 W. Solder the exposed thermal pad to a top-layer copper pour of at least 1 square inch to keep junction temperature rise below 30 C at 1 W controller dissipation in the sealed headlamp housing.
Place the four H-bridge MOSFETs symmetrically around the IC to minimize the high-frequency power-loop area, which directly impacts EMI compliance under CISPR 25. The input bulk capacitor must be within 10 mm of the high-side MOSFET sources to suppress switching spikes. Use a 4-layer PCB with a continuous ground plane on layer 2 beneath the switching node to provide a low-impedance return path and avoid coupling into the analog SET/dimming traces.
Do not operate the TLD5190QVXUMA1 in continuous boost mode above 60V output without verifying MOSFET VDS rating - 60V-rated MOSFETs are only marginal at 55V plus ringing. Also, the SSFM feature is enabled by default but should be confirmed by measuring the spectrum at the EMC chamber; some customers disable SSFM in firmware to lock a single frequency for predictable notch placement. Finally, ensure the SET pin current-sense resistor uses a 1% or better tolerance to maintain LED current accuracy across the -40 C to +150 C automotive temperature range.
Keep the analog ground (AGND) and power ground (PGND) nets separated at the IC and joined only at the input bulk capacitor negative terminal, as recommended in the manufacturer datasheet layout guideline. This star-ground topology prevents high di/dt switching currents from injecting noise into the SET pin current-sense amplifier. Route the PWM dimming signal as a guarded trace away from the switching node to avoid capacitive coupling that could appear as flicker at high dimming ratios.
合規資訊
AEC-Q100 qualified per Infineon product brief. RoHS compliant per Arrow and DigiKey listings. Halogen-free status not stated in the provided data and is marked unknown.
