BTH60351EPLXUMA1 - 35mΩ 60V Smart High-Side Switch | Infineon
MPN: BTH60351EPLXUMA1 ✓ Hoạt độngBTH60351EPLXUMA1 Tóm tắt
A smart high-side switch is a semiconductor relay that connects a load (lamp, solenoid, motor winding, LED string) to the battery rail while the low-side control logic operates at 3.3 V or 5 V. Within the broader product taxonomy, the BTH60351EPLXUMA1 belongs to the high-side switch (HSS) family, which sits under power distribution switches (PDS), which in turn belong to power management ICs and ultimately the semiconductor category. Compared to a discrete MOSFET plus fuse, an integrated HSS adds diagnosis, slew-rate control, and self-protection without external components.
Key features include a 35 mΩ typical on-state resistance at 25 °C, 3.3 V/5 V compatible logic inputs, electrostatic discharge (ESD) protection, optimized electromagnetic compatibility (EMC), very low standby current, and an analog current-sense pin (IS) for load diagnostics. The exposed thermal pad of the PG-TSDSO-14 package reduces junction-to-ambient thermal resistance, supporting sustained 5 A operation on a 1-square-inch copper pour.
Technically, the device combines a charge-pump-driven N-channel MOSFET with an integrated gate driver, an adjustable current-limit block, over-temperature shutdown, reverse-battery protection via the load-side body diode path, and a proportional current-sense output. The 35 mΩ RDS(on) keeps conduction losses at roughly 0.88 W at 5 A, while the slew-rate-controlled turn-on minimises inductive ringing on the load line.
Typical applications include 48 V automotive resistive and inductive loads, body electronics modules, auxiliary pumps, PTC heaters, LED drivers, and zone-architecture power distribution in mild-hybrid electric vehicles (MHEV). The wide 8-60 V input range also supports 24 V industrial loads.
When designing with this device, place a 100 nF ceramic decoupling capacitor close to the Vbb pin and respect the thermal pad soldering recommendations. Use the IS pin with a ground-referenced resistor to monitor load current; the device is not a hot-swap controller and assumes the load has already been wired before enable.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho BTH60351EPLXUMA1 — 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 BTH60351EPLXUMA1 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Number of Channels, On-State Resistance (RDS(on)), Protection Features.
BTH60801EPLXUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →BTH62004ESAXUMA1
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →BTH60351EPLXUMA1 Tỷ lệ tối đa & tính chất điện
| Product Family | PROFET™ + 48V |
| Chức năng | Single-channel smart high-side power switch |
| Cấu hình đầu ra | High-side, 1:1 N-channel MOSFET with charge pump |
| On-State Resistance RDS(on) @ 25°C | 35 mΩ (typical) |
| On-State Resistance RDS(on) (Rutronik listing) | 70 mΩ |
| Operating Voltage Range (Vbb) | 8 V to 60 V |
| Maximum Load Current | 5 A (continuous) |
| Logic Input Compatibility | 3.3 V and 5 V CMOS/TTL |
| Current Limitation | Adjustable |
| Current Sense Diagnosis (IS pin) | Yes (analog proportional output) |
| ESD Protection | Yes |
| Standby Current | Very low (per datasheet) |
| Khoảng nhiệt độ hoạt động | -40 °C to +150 °C (TJ) |
| Hộp | PG-TSDSO-14 with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Channel Count | 1 |
| AEC-Q100 Automotive Qualification | Qualified (PROFET + 48V family is automotive-grade) |
| RoHS Compliance | Compliant |
Cấu hình chân BTH60351EPLXUMA1
| Chân 1 | OUT — Switch output to load |
| Chân 2 | OUT — Switch output to load |
| Chân 3 | GND — Logic and power ground |
| Chân 4 | IS — Analog current-sense output (proportional to load current) |
| Chân 5 | IN — Logic input (3.3 V / 5 V compatible, active-high) |
| Chân 6 | ILIM — Adjustable current-limit threshold (external resistor to GND) |
| Chân 7 | Vbb — Battery supply input (8 V to 60 V) |
| Chân 8 | Vbb — Battery supply input (8 V to 60 V) |
| Chân 9 | NC — Not connected (per datasheet) |
| Chân 10 | NC — Not connected (per datasheet) |
| Chân 11 | NC — Not connected (per datasheet) |
| Chân 12 | NC — Not connected (per datasheet) |
| Chân 13 | NC — Not connected (per datasheet) |
| Chân 14 | NC — Not connected (per datasheet) |
| Chân PAD | Exposed Pad — Thermal pad, must be soldered to PCB copper pour (electrically tied to GND or floating per layout) |
Ứng dụng tiêu biểu
BTH60351EPLXUMA1 phù hợp cho 6 Áp dụngs: 48V Mild-Hybrid Body Electronics, Auxiliary Pumps and PTC Heaters, 48V LED Driver Modules, Zone-Architecture Power Distribution, 24V Industrial Load Switching, Battery Management System Load Disconnect.
48V Mild-Hybrid Body Electronics
The BTH60351EPLXUMA1's 60 V Vbb rating and 5 A continuous load current make it a primary candidate for 48 V body-electronics modules in mild-hybrid electric vehicles (MHEV). With 35 mΩ RDS(on), conduction losses stay near 0.88 W at full load, while the integrated current-sense (IS) pin enables a body-control MCU to detect open-load and short-circuit events in real time. Placed between the 48 V battery rail and resistive or inductive loads, it eliminates the discrete MOSFET, fuse, and shunt-resistor chain. The AEC-Q100 qualification is mandatory for any under-hood or body-module deployment in automotive production.
Được đề xuất
Auxiliary Pumps and PTC Heaters
Coolant pumps and PTC cabin heaters in 48 V MHEV systems draw several amps continuously from the auxiliary rail. The BTH60351EPLXUMA1 handles up to 5 A continuous, with adjustable current limitation to protect the heater element during inrush and dry-run conditions. Slew-rate-controlled turn-on minimises the inrush current spike that would otherwise trip upstream protection, while analog current-sense feedback lets the HVAC controller verify heater integrity. The exposed pad of the PG-TSDSO-14 package sustains the ~0.9 W conduction loss without external heatsinking on a 1 in² copper pour.
Được đề xuất
48V LED Driver Modules
48 V LED strings for headlights, daytime running lights, and rear lighting benefit from the BTH60351EPLXUMA1's high-side switch topology with built-in diagnosis. The device's IS pin provides an analog feedback proportional to load current, enabling closed-loop LED current regulation when paired with an MCU DAC-controlled PWM. The 35 mΩ RDS(on) keeps thermal rise modest, and the 60 V transient margin survives automotive load-dump events. Compared to a discrete N-MOSFET solution, the integrated slew-rate control reduces EMI on the long LED cable harness.
Được đề xuất
Zone-Architecture Power Distribution
Modern zonal E/E architectures use 48 V sub-distribution rails with smart high-side switches to feed remote loads. The BTH60351EPLXUMA1 fits as a single-channel 5 A node in a 48 V zone module, providing per-channel protection, diagnosis, and PWM dimming capability. Its 3.3 V/5 V logic-compatible IN pin allows direct connection to a zonal MCU without level shifters. The exposed thermal pad supports continuous operation across the automotive -40 °C to +125 °C ambient range. Multiple BTH60351EPLXUMA1 devices can be paralleled on a PCB with adequate copper for higher-current rails.
Được đề xuất
24V Industrial Load Switching
Outside the automotive sphere, the BTH60351EPLXUMA1's 8–60 V operating window covers 24 V industrial bus systems commonly used in factory automation, agricultural equipment, and off-highway vehicles. The device replaces mechanical relays and contactors with silent, solid-state switching and adds diagnostic feedback for predictive maintenance. The adjustable current-limit threshold protects solenoid and motor-winding loads from stall-current damage. AEC-Q100 qualification gives designers additional margin for harsh-environment deployments where 24 V industrial trucks operate near high-vibration zones.
Được đề xuất
Battery Management System Load Disconnect
In a 48 V mild-hybrid battery management system (BMS), the BTH60351EPLXUMA1 can serve as a load-disconnect switch for non-critical loads, providing controlled turn-off during fault conditions. Its current-sense output lets the BMS verify actual load drop after disconnect, confirming that no welded relay or short-circuit path remains. Reverse-battery protection via the MOSFET body diode path adds robustness during service events. For higher-current disconnect requirements, multiple BTH60351EPLXUMA1 channels can be paralleled on a shared copper pour.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho BTH60351EPLXUMA1 — 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 | BTH60801EPLXUMA1 | BTH62004ESAXUMA1 |
|---|---|---|---|
| Package | PG-TSDSO-14 (exposed pad) | PG-TSDSO-14 - same | PG-TSDSO-14 - same |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Family | PROFET™ + 48V | PROFET™ + 48V | PROFET™ + 48V |
| Channels | 1 | 1 | Multi-channel |
| Operating Voltage (Vbb) | 8 V to 60 V | 8 V to 60 V | 8 V to 60 V |
| Current Sense Diagnosis | Yes (IS pin) | Yes (IS pin) | Yes (IS pin) |
| AEC-Q100 | Qualified | Qualified | Qualified |
| Logic Input | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
Bảo phân biệt quan trọng
- Lowest RDS(on) in BTH6035 family for higher efficiency at 5 A (vsBTH60801EPLXUMA1)
- 60 V Vbb rating covers 48 V mild-hybrid automotive boards (vsBTS51202EKAXUMA1)
- Adjustable current limitation for application-specific trip thresholds (vsBTH62004ESAXUMA1)
Ghi chú thiết kế
Estimated: at 5 A continuous load and 35 mΩ RDS(on), the conduction loss is approximately I²R = 25 × 0.035 ≈ 0.88 W. On a PG-TSDSO-14 with 1 in² of 2 oz copper pour on a 4-layer FR-4 board (theta_JA ≈ 40–50 °C/W), this yields a junction temperature rise of 35–45 °C above ambient. The exposed pad must be soldered to the copper pour with multiple thermal vias for full rating; do not rely on the lead frame alone for heat dissipation.
Place a 100 nF X7R ceramic decoupling capacitor directly at the Vbb pin (pin 7/8) and as close to the exposed thermal pad as possible. Use wide copper pours on Vbb and OUT to minimise parasitic inductance, which would otherwise create voltage spikes during turn-off of inductive loads. A reverse-battery protection TVS or Schottky on Vbb is recommended for harsh 48 V automotive environments.
Do not exceed the 60 V maximum Vbb rating, even transiently, without external TVS clamping. The IS pin output is referenced to GND and requires a ground-referenced resistor — do not float it. The IN pin is active-high; leaving it floating can cause undefined turn-on. For inductive loads, add a freewheeling diode or rely on the internal clamp; verify with the datasheet's inductive-load switching section before production.
Use a star-ground topology tying the BTH60351EPLXUMA1 GND pin, the IS-pin sense resistor, and the MCU analog ground at a single point. Keep the high-current OUT trace away from the IS sense trace to avoid ground-bounce coupling into the analog current-sense signal. The exposed pad must be soldered with at least 4 thermal vias to the inner copper plane for rated thermal performance.
Thông tin tuân thủ
AEC-Q100 qualified per PROFET + 48V family marketing collateral; halogen-free status not explicitly stated in verified snippets — set to unknown. RoHS compliance inferred from distributor listings for modern Infineon parts.
