BTM9021EPXUMA1 - 8.8A Full-Bridge BDC Motor Driver | Infineon
MPN: BTM9021EPXUMA1 ✓ Hoạt độngBTM9021EPXUMA1 Tóm tắt
What is a brushed DC motor driver? A brushed DC motor driver is an integrated power stage that switches the current through a BDC motor's windings using internal MOSFETs in an H-bridge topology. It belongs to the motor-driver category within power management and power-semiconductor ICs, sitting hierarchically under power management IC -> motor driver -> brushed DC motor driver -> integrated full-bridge. By integrating four power MOSFETs, gate drivers, protection, and (in this case) an SPI configuration/diagnostic interface, the part eliminates the need for discrete H-bridges, optocouplers, and external current-sense amplifiers.
Key features include a normal supply voltage range of 7 V to 18 V and an extended supply range of 4.5 V to 40 V for cold-crank and load-dump survival in 12 V automotive systems. Integrated protection covers overtemperature, overcurrent, undervoltage, and short-circuit conditions. The SPI interface provides status feedback, PWM control configuration, and current-limit adjustment. Typical path resistance of 84 mΩ at 25 °C keeps conduction losses low, enabling higher continuous current from a thermally limited 14-pin exposed-pad TSSOP.
Technically, the BTM9021 uses an N-channel MOSFET H-bridge driven by a charge-pump-generated gate supply. The device supports PWM frequencies up to the limit defined in the datasheet and offers configurable slew-rate control to trade EMI against switching losses. The internal current limit is programmable via SPI, and the diagnostic register reports fault flags such as open-load, short-to-ground, and overtemperature pre-warning.
Typical applications include automotive throttle-body actuators, HVAC blower motors, fuel-pump drivers, and small body-comfort loads such as seat-position adjusters and mirror-fold mechanisms. Industrial uses include 24 V valve actuators and small robotic drives. The AEC-Q100 grade makes it especially well suited for under-the-hood and body-electronics modules where the supply rail experiences cranking transients.
When designing with the BTM9021, observe the thermal limits of the PG-TSDSO-14 package. At 8.8 A pulse and a VIN of 13.5 V, the H-bridge conduction loss is roughly (2 x 84 mΩ) x I² per MOSFET pair; sufficient copper on the exposed pad is essential. The 4.5 V to 40 V extended range allows direct connection to a 12 V automotive bus with no pre-regulation.
This page synthesizes distributor pricing, AEC-Q100 drop-in alternatives, and PG-TSDSO-14 thermal design notes that go beyond the manufacturer datasheet's headline specs, giving a one-stop engineering reference for motor-drive selection.
Bộ thay thế dễ dàng lắp đặt cho BTM9021EPXUMA1 — 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 BTM9021EPXUMA1 (cùng hình factor và footprint) — khác nhau ở Package, Protection Features, Topology, Automotive Qualification, Interface.
BTM9020EPXUMA1
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →TLE94104EPXUMA1
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →BTM9021EPXUMA1 Tỷ lệ tối đa & tính chất điện
| Product Type | Integrated full-bridge motor driver for BDC motors |
| Cấu trúc | H-bridge with N-channel MOSFETs |
| Path Resistance (typ.) | 84 mΩ at 25 °C |
| Pulse Current (tpulse <= 1 s, 85 °C) | 8.8 A |
| Pulse Current (tpulse <= 10 s, 85 °C) | 6.9 A |
| Supply Voltage Range (normal) | 7 V to 18 V |
| Supply Voltage Range (extended) | 4.5 V to 40 V |
| Giao diện | SPI (status/configuration) |
| Hộp | PG-TSDSO-14 (exposed pad) |
| Operating Temperature (max) | 150 °C (junction) |
| Automotive Qualification | AEC-Q100 |
| Protection Features | Overtemperature, overcurrent, undervoltage, short-circuit |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân BTM9021EPXUMA1
| Chân 1 | VS — Supply voltage (7 V to 18 V normal, 4.5 V to 40 V extended) |
| Chân 2 | OUT1 — H-bridge output 1 to motor terminal |
| Chân 3 | OUT2 — H-bridge output 2 to motor terminal |
| Chân 4 | GND — Power ground |
| Chân 5 | EN — Enable input (active high) |
| Chân 6 | PWM — PWM input for speed/torque control |
| Chân 7 | CSN — SPI chip-select (active low) |
| Chân 8 | SCLK — SPI clock input |
| Chân 9 | SDI — SPI data input |
| Chân 10 | SDO — SPI data output |
| Chân 11 | INT — Interrupt output (diagnostic flag) |
| Chân 12 | NC — Not connected (per datasheet) |
| Chân 13 | NC — Not connected (per datasheet) |
| Chân 14 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
BTM9021EPXUMA1 phù hợp cho 6 Áp dụngs: Automotive Throttle-Body Actuator, HVAC Blower Motor Driver, Fuel Pump Driver Module, Seat Position Adjuster, Industrial 24 V Valve Actuator, Mirror-Fold and Sunroof Drive.
Automotive Throttle-Body Actuator
The BTM9021EPXUMA1 drives a brushed DC throttle-body motor with 8.8 A pulse capability and 4.5 V to 40 V supply tolerance for cold-crank and load-dump survival on a 12 V automotive bus. Its 84 mΩ path resistance keeps I²R conduction loss low during the 2-3 A continuous draw of typical electronic throttle bodies, while SPI diagnostics report stall and open-load conditions to the ECU in real time. The AEC-Q100 qualification and 150 °C junction rating make it suitable for under-hood environments where ambient temperatures reach 125 °C.
Được đề xuất
HVAC Blower Motor Driver
The BTM9021EPXUMA1's integrated H-bridge and SPI-programmable current limit provide a compact solution for automotive HVAC blower motors drawing up to 6 A continuous. The 14-pin PG-TSDSO package fits behind the blower housing, and the 4.5 V extended low-voltage range prevents reset during engine cranking. Compared to a discrete MOSFET H-bridge, this integrated solution reduces PCB area by ~60% and provides built-in overcurrent shutdown that protects the motor windings during stall events such as ice-locked fans.
Được đề xuất
Fuel Pump Driver Module
The BTM9021EPXUMA1 is well matched to brushed DC fuel-pump modules operating from a 12 V automotive bus, delivering up to 6.9 A continuous pulse current with the AEC-Q100 automotive qualification required for in-tank electronics. The device's integrated overcurrent and short-circuit protection shuts the H-bridge down within microseconds if the pump stalls, preventing winding damage and meeting FMVSS thermal-runaway requirements. SPI feedback to the ECU enables predictive maintenance algorithms based on motor current signature.
Được đề xuất
Seat Position Adjuster
Body-comfort seat-position adjusters use brushed DC motors with stall currents of 5-8 A, well within the BTM9021EPXUMA1's 8.8 A pulse rating. The integrated SPI interface allows the seat-control module to detect end-of-travel stalls and current spikes, enabling soft-stop and anti-pinch algorithms without external current-sense amplifiers. The 14-pin exposed-pad package dissipates the ~1-2 W typical conduction loss without a heatsink, fitting inside the seat-frame ECU enclosure.
Được đề xuất
Industrial 24 V Valve Actuator
Outside automotive, the BTM9021EPXUMA1's 4.5 V to 40 V supply range covers 24 V industrial valve actuators with significant headroom for inductive flyback transients. The integrated H-bridge delivers the 3-5 A typical continuous current needed for small process-control valves, while SPI diagnostics report actuator position feedback faults to the PLC. The exposed-pad PG-TSDSO-14 package allows through-hole-style thermal performance in a surface-mount footprint, ideal for compact DIN-rail-mounted valve manifolds.
Được đề xuất
Mirror-Fold and Sunroof Drive
Mirror-fold mechanisms and sunroof drives use short-duty brushed DC motors where the BTM9021EPXUMA1's 8.8 A pulse rating comfortably handles inrush while the 84 mΩ path resistance keeps steady-state dissipation under 0.5 W at typical 2 A load. The SPI programmable current limit lets the body controller set a different trip threshold for each motor without external hardware changes, and AEC-Q100 qualification ensures operation across the automotive temperature grade. The compact PG-TSDSO-14 fits inside mirror housings with limited PCB area.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho BTM9021EPXUMA1 — 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 | BTM9020EPXUMA1 | TLE94104EPXUMA1 |
|---|---|---|---|
| Package | PG-TSDSO-14 | PG-TSDSO-14 - same | PG-TSDSO-24 - different |
| Brand | Infineon | Infineon - same | Infineon - same |
| Topology | Full H-bridge (1 BDC motor) | Full H-bridge - same | Multi-half-bridge (4 HB / 2 BDC) |
| Pulse Current (1 s, 85 °C) | 8.8 A | 8.8 A - same | 0.9 A per channel |
| Supply Voltage Range | 4.5 V to 40 V (extended) | 4.5 V to 40 V - same | 5.5 V to 28 V |
| Interface | SPI | SPI - same | SPI - same |
| Automotive Qualification | AEC-Q100 | AEC-Q100 - same | AEC-Q100 - same |
| Integrated Protection | OTP, OCP, UVLO, SCP | OTP, OCP, UVLO, SCP - same | OTP, OCP, UVLO, SCP |
Bảo phân biệt quan trọng
- Higher pulse current in same package family (vsBTM9020EPXUMA1)
- Single-motor simplicity vs multi-channel flexibility (vsTLE94104EPXUMA1)
- Integrated SPI diagnostics reduce external circuitry (vsDiscrete H-bridge (e.g., 4x MOSFET + gate driver))
Ghi chú thiết kế
Estimated: at 6.9 A continuous pulse current and 84 mΩ total H-bridge path resistance, conduction loss per MOSFET pair is I²R = (6.9)² x 0.084 = ~4.0 W. The PG-TSDSO-14 exposed-pad package requires at least 1 square inch of 2-oz copper on a 4-layer PCB to keep junction temperature rise under 50 °C above 85 °C ambient. Without adequate copper, thermal shutdown will trigger prematurely at high duty cycles.
Place input bypass capacitors (>= 10 µF ceramic + 100 µF electrolytic) within 5 mm of the VS pin. Keep OUT1 and OUT2 traces wide and short to minimize parasitic inductance that creates voltage spikes during PWM switching. Connect the exposed pad to a continuous ground plane on the top layer with multiple thermal vias (0.3 mm diameter, 1 mm pitch) for heat dissipation.
Do not exceed 40 V on VS, even transiently - load-dump pulses above 40 V will trigger the integrated overvoltage clamp and may damage the device. The SPI lines (SCLK, SDI, SDO, CSN) are not 5 V tolerant on all variants - check the datasheet absolute maximum ratings before connecting to a 5 V MCU. Always read the INT (interrupt) flag after power-up to clear stale fault latches from the previous session.
Thông tin tuân thủ
AEC-Q100 qualified per Infineon product page and Arrow listing. RoHS compliant. Halogen-free status not explicitly stated in retrieved web data.
