BTS500071LUAAUMA1 - 55A Smart High-Side Switch | Infineon
MPN: BTS500071LUAAUMA1 ✓ Hoạt độngBTS500071LUAAUMA1 Tóm tắt
A high-side smart switch (also called an intelligent high-side switch or IHSS) is a semiconductor power switch placed between the positive supply rail and the load, replacing mechanical relays and discrete MOSFETs with a fully protected solid-state alternative. Within the broader component taxonomy, the BTS500071LUAAUMA1 belongs to: high-side switch -> intelligent load driver -> power distribution switch -> power management IC -> semiconductor device. By integrating the power MOSFET, gate driver, current sensing, and protective logic in one die, smart high-side switches reduce PCB area, eliminate wiring harness weight, and provide MCU-readable fault diagnostics for body-electronics ECUs.
Key features include a 55 A continuous current rating, 0.7 mΩ typical RDS(on) at 25 °C, dedicated current-limit and overload shutdown, over-temperature protection with auto-restart, over-voltage clamp at VDS, and ground-loss robustness. The PG-HSOF-8-5 package provides a top-side exposed pad that delivers an exceptionally low thermal resistance, enabling the 55 A rating without external heatsinking on properly designed copper pours. Reverse ON capability protects the device and downstream loads during accidental reverse-polarity battery connection.
Architecturally, the BTS500071LUAAUMA1 uses Infineon's N-channel Power PROFET+ trench MOSFET with integrated charge pump, current-sense mirror, and embedded protective state machine. The IS pin provides proportional analog load-current feedback to the MCU ADC, enabling closed-loop current monitoring for predictive maintenance and fault pre-warning. The diagnostic pin reports overtemperature, open load, and short-to-ground conditions through standard Infineon KN/SPI protocols.
Typical applications include automotive body control modules, HVAC blower control, seat-heater drivers, and 12 V industrial solenoid/valve drivers. The AEC-Q100 qualification and 12 V optimized RDS(on) make it ideal for replacing electromechanical relays in vehicle electrical systems.
Design considerations include proper PCB thermal design—minimum 6 cm² of 2 oz copper on the exposed pad is recommended for full 55 A operation. Place a 100 nF ceramic decoupling capacitor within 5 mm of the Vbb pin to suppress load-dump transients.
This page synthesizes distributor pricing, parametric alternatives, and practical PCB layout guidance not found in the manufacturer datasheet, plus a comparison with related PROFET+ family members.
Bộ thay thế dễ dàng lắp đặt cho BTS500071LUAAUMA1 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với BTS500071LUAAUMA1 (cùng hình factor và footprint) — khác nhau ở Number of Channels, On-State Resistance (RDS(on)), Operating Temperature, Package.
BTS50010-1LUA
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
BTS50015-1TMA
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
BTS70001EPC
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
BTS70001EPCXUMA1
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
BTS72404EPAXUMA1
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
BTS51202EKAXUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →BTS500071LUAAUMA1 Tỷ lệ tối đa & tính chất điện
| Product Type | Smart High-Side Power Switch |
| Series | Power PROFET+ 12 V |
| Number of Channels | 1 |
| Cấu hình đầu ra | High Side |
| On-State Resistance (RDS(on)) | 0.7 mΩ (typical) |
| Continuous Load Current | 55 A |
| Điện áp cung cấp hoạt động | 5.8 V to 18 V |
| Switch Type | N-Channel Power MOSFET |
| Input Type | Non-Inverting |
| Reverse ON Protection | Yes (Reverse Battery Protection) |
| Nhiệt độ hoạt động | -40 °C to +150 °C (TJ) |
| Hộp | PG-HSOF-8-5 (8-pin + exposed tab) |
| Kiểu lắp đặt | Surface Mount |
| Fault Protection | Current Limiting, Over-Temperature, Over-Voltage, Open Load |
| Automotive Qualification | AEC-Q100 |
| Trạng thái RoHS | Compliant |
Cấu hình chân BTS500071LUAAUMA1
| Chân 1 | OUT — Switched output to load (drain of internal power MOSFET) |
| Chân 2 | IS — Current sense / diagnostic feedback output (analog current mirror) |
| Chân 3 | IN — Logic input - active high enables the switch |
| Chân 4 | GND — Logic ground reference for IN and IS pins |
| Chân 5 | Vbb — Battery / supply voltage input (also connected to exposed pad) |
| Chân 6 | NC — Not connected (per datasheet) |
| Chân 7 | NC — Not connected (per datasheet) |
| Chân 8 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
BTS500071LUAAUMA1 phù hợp cho 6 Áp dụngs: Automotive HVAC Blower Control, Seat Heater Driver, Industrial 12 V Solenoid / Valve Driver, DC Load Switch / Solid-State Relay, LED Lighting Driver (Automotive Headlamp / Tail Lamp), Power Distribution / ECUs.
Automotive HVAC Blower Control
The BTS500071LUAAUMA1's 0.7 mΩ RDS(on) and 55 A continuous rating make it well-matched to automotive HVAC blower motor control, where typical load current ranges 15-30 A on cold-start and resistance varies with fan speed. Placed between the 12 V battery rail and the blower motor, the smart switch replaces legacy electromechanical relays and provides MCU-readable current-sense feedback via the IS pin, enabling closed-loop airflow regulation. Compared to a discrete MOSFET + shunt solution, the integrated BTS500071LUAAUMA1 cuts PCB area by roughly 60 % and adds overtemperature, overcurrent, and reverse-battery protection with zero external protection components. Infineon's PROFET+ diagnostic protocol also reports open-load and short-to-ground faults, critical for OEM warranty reduction.
Được đề xuất
Seat Heater Driver
The BTS500071LUAAUMA1 is ideal for automotive seat-heater driver modules, where 8-15 A resistive heating loads demand low conduction loss and AEC-Q100 robustness. With 0.7 mΩ RDS(on) at typical 12 A draw, conduction loss is only ~0.1 W, supporting fully on-state operation with negligible thermal rise on the PG-HSOF-8-5 exposed pad. The integrated current-sense output allows the MCU to detect partial heater-element failures (open-load, increased resistance) before the user notices degraded comfort. Reverse ON protection also guards the seat module against reverse-polarity jump-start events common in service-bay battery replacement.
Được đề xuất
Industrial 12 V Solenoid / Valve Driver
The BTS500071LUAAUMA1 drives 12 V industrial hydraulic solenoids and pneumatic valves at currents up to 55 A, replacing mechanical contactors and reducing switching wear. Its 5.8 V to 18 V supply range covers both nominal 12 V and 24 V industrial battery transients (when protected externally by TVS), while the 0.7 mΩ RDS(on) keeps coil-supply voltage drop under 50 mV even at full load. The device's reverse-polarity protection and ground-loss robustness are critical for field-deployed industrial equipment exposed to wiring faults. Integrated diagnostic feedback enables predictive maintenance to flag degrading solenoid coils before catastrophic failure.
Được đề xuất
DC Load Switch / Solid-State Relay
The BTS500071LUAAUMA1 functions as a solid-state replacement for automotive 12 V electromechanical relays in body control modules, switching resistive and inductive loads without contact bounce or arcing. Its 55 A continuous rating supports applications such as trailer lighting, auxiliary power outlets, and rear-window defrosters where legacy relays would otherwise be needed. Integrated protection (overcurrent, over-temperature, over-voltage clamp) reduces the need for discrete fusing and TVS components, lowering BOM cost and assembly time. Reverse ON ensures the load and switch survive accidental reverse-battery wiring during service.
Được đề xuất
LED Lighting Driver (Automotive Headlamp / Tail Lamp)
The BTS500071LUAAUMA1 drives high-power automotive LED headlamp and tail-lamp modules at typical 5-20 A string currents, providing PWM dimmability via the IN pin at up to 1 kHz with stable current-sense feedback. The 0.7 mΩ RDS(on) and PG-HSOF-8-5 thermal performance support continuous LED-string operation without external heatsinking on 6 cm² copper pours, reducing lamp-housing thermal load. Fault diagnostics detect open-LED-string conditions, critical for safety compliance with FMVSS 108 and ECE R7/R48 photometric standards. The AEC-Q100 qualification also satisfies OEM automotive lighting reliability requirements.
Được đề xuất
Power Distribution / ECUs
The BTS500071LUAAUMA1 serves as the primary or secondary high-side switch in 12 V automotive power distribution ECUs, energizing downstream sub-modules (lighting controllers, sensor nodes, accessory modules) with full diagnostic feedback to the central BCM. With 0.7 mΩ RDS(on) and 55 A continuous rating, a single BTS500071LUAAUMA1 can replace an entire relay-and-fuse sub-assembly. The reverse ON capability protects the ECU during jump-start polarity reversals. AEC-Q100 qualification and the wide 5.8 V-18 V operating range also make it suitable for off-road, agricultural, and marine 12 V power distribution.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho BTS500071LUAAUMA1 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | BTS50010-1LUA | BTS50015-1TMA | BTS70001EPC | BTS51202EKAXUMA1 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-HSOF-8-5 (8+Tab) | PG-HSOF-8-5 - same | PG-HSOF-8-5 - same | PG-HSOF-8-5 - same | PG-HSOF-8-5 - same |
| On-State Resistance (typ) | 0.7 mΩ | 0.7 mΩ | 0.7 mΩ | 1.6 mΩ | 12 mΩ |
| Continuous Load Current | 55 A | 40 A | 55 A | 17 A | 5.5 A (per channel) |
| Operating Voltage | 5.8 V to 18 V | 5.8 V to 18 V | 5.8 V to 18 V | 5.8 V to 18 V | 5.8 V to 18 V |
| Reverse Battery Protection | Yes (Reverse ON) | No | Yes | No | No |
| Number of Channels | 1 | 1 | 1 | 1 | 2 |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Reverse ON capability for reverse-battery robustness (vsBTS50010-1LUA)
- 55 A continuous current in PG-HSOF-8-5 footprint (vsBTS70001EPC)
- Ultra-low 0.7 mΩ RDS(on) (vsBTS51202EKAXUMA1)
Ghi chú thiết kế
Estimated: at 30 A continuous load with 0.7 mΩ RDS(on), conduction loss is P = I² × RDS = 30² × 0.0007 ≈ 0.63 W. The PG-HSOF-8-5 exposed pad requires a minimum 6 cm² of 2 oz copper on top + bottom PCB layers to keep junction temperature rise below 50 °C. For sustained 55 A operation, expand the copper pour to 10 cm² or add a thermal via array (≥25 vias, 0.3 mm drill) directly under the exposed pad to inner copper planes.
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the Vbb pin to absorb load-dump and reverse-battery transient energy. Use wide copper traces (≥3 mm per 10 A) on OUT and Vbb to minimize parasitic inductance. Keep the IS pin trace short and away from switching nodes to prevent capacitive coupling that distorts current-sense readings. The exposed pad must be soldered with a thermal pad land pattern per Infineon's PG-HSOF-8-5 footprint recommendation.
Do not parallel multiple BTS500071LUAAUMA1 devices without current-balancing resistors - the 0.7 mΩ tolerance band allows significant current hogging. The IS pin is a current mirror output, NOT a logic level; route through a small-signal resistor (typically 1 kΩ) to a microcontroller ADC, not directly to a digital input. Reverse ON means the device conducts during reverse-battery events; place an inline fuse upstream to limit fault current and protect downstream wiring harnesses. Always verify the IS pin diagnostics on prototype units - some MCU ADC channels require scaling resistor tuning to use the full diagnostic dynamic range.
The BTS500071LUAAUMA1 can generate fast dV/dt edges (typically 1-5 V/ns) on the OUT pin during turn-off, especially with inductive loads. Add a snubber network (1 kΩ + 10 nF) or TVS diode (e.g., 24 V SMAJ24A) across inductive loads to suppress ringing and meet CISPR 25 automotive EMC requirements. For PWM dimming, limit switching frequency to ≤1 kHz for LED loads and ≤400 Hz for solenoid/relay loads to keep EMI below automotive emission limits.
Thông tin tuân thủ
AEC-Q100 qualified per Infineon product page for automotive applications. RoHS and REACH compliant per distributor listings (DigiKey, Mouser, Arrow).
