MC33931EK574 - 5A H-Bridge Motor Driver, 5-28V | NXP
N.º de pieza: MC33931EK574 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.45 | $6,45 |
| 10 | $5.81 | $58,10 |
| 100 | $5.17 | $517,00 |
| 500 | $4.64 | $2.320,00 |
| 1.000 | $4.12 | $4.120,00 |
MC33931EK574 Descripción general
A brushed DC motor driver (also known as an H-bridge) is a power-IC topology that uses four switches arranged in an H configuration to drive a DC motor in forward, reverse, or brake modes. The MC33931EK574 sits within the motor driver hierarchy: H-bridge > brushed DC driver > motor driver > power management IC > semiconductor. This monolithic integration eliminates the discrete MOSFET half-bridges typically required in throttle-body designs, simplifying PCB layout and improving reliability.
Key features include 5.0 A continuous DC output current (8.0 A peak transient), 5 V to 28 V operating voltage range, 0.5 A typical Sleep current, integrated current sensing with analog FB output, over-current, short-circuit, and thermal-shutdown fault protection, and a logic-level CMOS parallel interface. The exposed thermal pad of the SOIC-EP package enables direct PCB heat-sinking for sustained 5 A operation.
The device uses an N-channel MOSFET H-bridge output stage driven by a charge-pump gate-drive circuit, with internal dead-time generation to prevent shoot-through. The current-limit threshold and the on-chip current-sense amplifier allow closed-loop throttle position control without external shunt resistors, reducing BOM cost and PCB area.
Typical use cases span electronic throttle bodies (ETB) in drive-by-wire systems, electronic stability program (ESP) brake modulation valves, variable-geometry turbocharger (VGT) vanes, exhaust gas recirculation (EGR) valves, and industrial low-voltage DC servo motor control where AEC-Q100 Grade 1 stress testing is required.
When designing with this device, calculate worst-case power dissipation: at 14 V supply and 5 A load, the H-bridge dissipates approximately 7-10 W; the SOIC-EP package requires substantial PCB copper pour (minimum 4 square inches on top/bottom) to keep junction temperature within the 150 C TJ max for AEC-Q100 Grade 1 (-40 to +125 C TA).
This page synthesizes distributor pricing, drop-in factory variants, design notes, and application guidance not consolidated in the manufacturer datasheet.
Alternativas directas para MC33931EK574 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC33931EK
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC33931EK-R2
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC33931EKR2G
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC33931EK574 Valores máximos y características eléctricas
| Tipo de salida | H-Bridge, Brushed DC |
| Configuración de salida | Half-Bridge (dual, H-bridge integrated) |
| Operating Voltage (VCC) | 5 V to 28 V |
| Continuous Output Current | 5.0 A |
| Peak Output Current | 8.0 A |
| Sleep Current | 0.5 uA typical |
| Logic Input Type | CMOS Parallel |
| Current Feedback | Yes (analog current feedback output) |
| Fault Protection | Over-current, Short-circuit, UVLO, Thermal Shutdown |
| Temperatura de funcionamiento | -40 C to +125 C |
| AEC-Q100 Grade | Grade 1 qualified |
| Encapsulado | 32-SOIC-EP (exposed pad) |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 3 |
| Estado RoHS | Compliant |
| Lead-Free | Yes |
Configuración de pines de MC33931EK574
| Pin 1 | IN1 — Logic input 1 (forward direction) |
| Pin 2 | IN2 — Logic input 2 (reverse direction) |
| Pin 3 | EN — Sleep / enable (active high) |
| Pin 4 | FB — Current feedback analog output |
| Pin 5 | GND — Logic ground |
| Pin 6 | VCC — Logic supply (5V) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | OUT1 — H-bridge output 1 |
| Pin 10 | OUT1 — H-bridge output 1 (continued) |
| Pin 11 | OUT1 — H-bridge output 1 (continued) |
| Pin 12 | OUT1 — H-bridge output 1 (continued) |
| Pin 13 | OUT1 — H-bridge output 1 (continued) |
| Pin 14 | OUT1 — H-bridge output 1 (continued) |
| Pin 15 | PGND — Power ground (thermal pad bond) |
| Pin 16 | PGND — Power ground (continued) |
| Pin 17 | PGND — Power ground (continued) |
| Pin 18 | VPWR — Motor supply (5-28 V) |
| Pin 19 | VPWR — Motor supply (continued) |
| Pin 20 | VPWR — Motor supply (continued) |
| Pin 21 | VPWR — Motor supply (continued) |
| Pin 22 | VPWR — Motor supply (continued) |
| Pin 23 | OUT2 — H-bridge output 2 (continued) |
| Pin 24 | OUT2 — H-bridge output 2 (continued) |
| Pin 25 | OUT2 — H-bridge output 2 (continued) |
| Pin 26 | OUT2 — H-bridge output 2 (continued) |
| Pin 27 | OUT2 — H-bridge output 2 (continued) |
| Pin 28 | NC — Not connected (per datasheet) |
| Pin 29 | NC — Not connected (per datasheet) |
| Pin 30 | NC — Not connected (per datasheet) |
| Pin 31 | NC — Not connected (per datasheet) |
| Pin 32 | NC — Not connected (per datasheet) |
Área de funcionamiento seguro (DC)
Aplicaciones típicas
MC33931EK574 es adecuado para 6 aplicacións: Electronic Throttle Body (ETB) Control, Electronic Stability Program (ESP) Hydraulic Valve, Variable Geometry Turbocharger (VGT) Vane Actuator, Exhaust Gas Recirculation (EGR) Valve Control, Industrial DC Servo Motor Control, Aerial Drone / UAV Brushless-to-Brushed ESC Adapter.
Electronic Throttle Body (ETB) Control
The MC33931EK574 is NXP's flagship AEC-Q100 Grade 1 H-bridge for drive-by-wire electronic throttle bodies, replacing legacy mechanical throttle cables with closed-loop servo control. Its 5.0 A continuous current drives throttle-plate DC motors across the full 5-28 V automotive supply range including 12 V cranking transients, while the integrated current-sense amplifier with analog FB output enables precision closed-loop position control without external shunt resistors. The H-bridge forward, reverse, brake modes controlled by two CMOS logic inputs map directly to throttle plate open / close commands. AEC-Q100 Grade 1 qualification at 125 C ambient eliminates the need for customer-side qualification cycles in engine bay-mounted designs.
Recomendado
Electronic Stability Program (ESP) Hydraulic Valve
In anti-lock braking and electronic stability program systems, the MC33931EK574 drives the hydraulic-modulation solenoid valves that apply or release brake pressure to individual wheels. The 5 A continuous current and 8 A peak transient rating match the high-inrush demands of solenoid-actuated valves during emergency braking. Built-in over-current and short-circuit protection prevent catastrophic failure in the fault-prone automotive underbody environment, while thermal shutdown protects the IC during sustained ABS cycling. The 32-SOIC-EP package withstands the high-vibration underbody mounting environment when properly soldered to PCB with adequate thermal copper.
Recomendado
Variable Geometry Turbocharger (VGT) Vane Actuator
The MC33931EK574 provides precision closed-loop control of the variable-geometry turbocharger's vane actuator in diesel and gasoline direct-injection engines. VGT vanes require rapid bidirectional actuation with millisecond response to manage boost pressure, and the IC's parallel CMOS interface enables real-time MCU-driven PWM control. AEC-Q100 Grade 1 qualification handles under-hood thermal stress up to 125 C ambient. The analog current feedback output enables position estimation via current sensing, reducing the need for redundant position sensors and lowering system BOM cost in cost-sensitive diesel engine platforms.
Recomendado
Exhaust Gas Recirculation (EGR) Valve Control
The MC33931EK574 drives EGR valve actuators that modulate exhaust gas recirculation for NOx emissions control in gasoline and diesel engines. EGR valves require precise bidirectional motion with hundreds of mA continuous current, well within the IC's 5 A capability. The integrated current-sense amplifier enables closed-loop valve position control using motor current as feedback proxy, reducing sensor count and cost. The wide 5-28 V operating range accommodates 12 V passenger-car systems and 24 V commercial-truck systems without modification, with internal UVLO ensuring clean start-up and shut-down sequencing.
Recomendado
Industrial DC Servo Motor Control
Beyond automotive use, the MC33931EK574 controls industrial brushed DC servo motors up to 5 A continuous, including conveyor-belt drives, valve actuators, and small pump motors. The CMOS parallel interface connects directly to industrial PLCs or MCUs without level shifting, and the wide 5-28 V supply range covers 12 V and 24 V industrial bus rails. The integrated fault protection (over-current, short-circuit, UVLO, thermal shutdown) reduces the discrete protection component count typical of industrial designs. Designers benefit from AEC-Q100 Grade 1 stress margin even in non-automotive applications where extended temperature or vibration tolerance is required.
Recomendado
Aerial Drone / UAV Brushless-to-Brushed ESC Adapter
In small unmanned aerial vehicles (UAVs), the MC33931EK574 drives brushed DC motors used in legacy payload-release mechanisms, pan-tilt gimbals, and landing-gear actuators. While most modern UAVs use brushless ESCs, brushed DC actuators remain common in payload subsystems and ground robotics. The SOIC-EP package enables compact PCB integration, while AEC-Q100 Grade 1 qualification handles aerospace thermal stress. The 8 A peak transient capability handles the inrush of mechanical actuators under high load, while the Sleep current of 0.5 uA typical preserves battery life during UAV standby modes.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC33931EK574 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC33931EK | MC33931EK-R2 | MC33931EKR2G |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | onsemi |
| Package | 32-SOIC-EP | 32-SOIC-EP - same | 32-SOIC-EP - same | 32-SOIC-EP - same |
| Output Current (Continuous) | 5.0 A | 5.0 A | 5.0 A | 5.0 A |
| Output Current (Peak) | 8.0 A | 8.0 A | 8.0 A | 8.0 A |
| Operating Voltage Range | 5 V to 28 V | 5 V to 28 V | 5 V to 28 V | 5 V to 28 V |
| Sleep Current | 0.5 uA typical | 0.5 uA typical | 0.5 uA typical | 0.5 uA typical |
| Current Feedback | Yes (analog FB) | Yes (analog FB) | Yes (analog FB) | Yes (analog FB) |
| AEC-Q100 Grade | Grade 1 qualified | Grade 1 qualified | Grade 1 qualified | Grade 1 qualified |
| Unit Price @ qty 1 | $6.45 | $5.95 | $5.95 | $5.75 |
| Factory Trim Code | '574 (factory option) | None (base variant) | None + reel pack | None + reel pack |
Diferenciadores clave
- Factory trim option '574 designation (frente a MC33931EK (base variant))
- Integrated current feedback eliminates external shunt (frente a MC33926 (RDS(on) sensing variant))
- AEC-Q100 Grade 1 stress qualification (frente a Industrial-grade motor drivers)
- Parallel CMOS interface for deterministic control (frente a SPI-controlled motor drivers (e.g., MC33CD1030))
Notas de diseño
Estimated: at VPWR=14 V, motor stall current 2 A, and continuous H-bridge switching, the MC33931EK574 dissipates approximately 2-3 W. The 32-SOIC-EP package has theta_JA of approximately 30 C/W when soldered to a 4-square-inch PCB copper pour, yielding a 60-90 C junction temperature rise above 25 C ambient. For sustained 5 A operation, increase copper pour to 6+ square inches on both top and bottom layers with thermal vias to inner ground planes. Without adequate copper, the IC will thermally throttle below the rated 5 A.
Route the high-current motor output traces (OUT1, OUT2) with a minimum of 50 mil (1.27 mm) copper width per ampere of continuous current to limit voltage drop and trace heating. Use 4 oz copper on the outer PCB layers when possible. Place the VPWR and PGND bypass capacitors (10 uF X7R minimum) within 10 mm of the IC package to suppress switching transients. Connect the exposed thermal pad to a continuous copper pour stitched with thermal vias (0.3 mm drill, 0.5 mm pitch) to inner ground planes.
Do not leave the exposed pad unsoldered or it floats in potential and causes latch-up or thermal runaway. The IN1/IN2 logic inputs must not float; tie them to GND through 100 kohm pull-downs if the controlling MCU is not actively driving them. Do not exceed 28 V VPWR even during load-dump events; add a TVS clamp (e.g., 33 V SMBJ) from VPWR to PGND to absorb transients. PWM switching above the gate-drive capability noted in the datasheet increases switching losses and may trigger fault protection.
The integrated charge-pump generates the gate-drive supply for the high-side N-channel FETs from the VPWR rail. An external bootstrap capacitor is not required. The internal current-sense amplifier scales motor current to the FB pin voltage; calibrate the FB voltage-to-current ratio using the datasheet's I_FB specification at your operating temperature. The FB output can drive a 10 kohm load but is sensitive to PCB noise; route FB as a guarded analog trace away from OUT1/OUT2 switching traces.
Información de cumplimiento
RoHS compliant per NXP product page. AEC-Q100 Grade 1 qualified per MC33931 datasheet. Halogen-free and conflict-minerals status not explicitly stated in available web data - set to unknown.
