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NXP Semiconductors MC34932SEKR2
- Part No.:
- MC34932SEKR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Motor Drivers, Controllers
- Package:
- 54-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MC34932SEKR2.pdf
- Description:
- H-BRIDGE DUAL BRUSHED DC & STE
- Quantity:
- Payment:
- Shipping:
Inventory:1,393
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Product details
Overview
MC34932SEKR2 from NXP Semiconductors is a dual-channel monolithic H-bridge power IC in a 54-pin SOICW-EP package, designed for low-voltage DC servo and brushed motor control up to 5.0 A peak per bridge. It operates from 5.0 V to 36 V (transient to 40 V), features integrated current feedback (0.24% proportional output), overcurrent/overtemperature/undervoltage fault reporting via open-drain status flags, and supports PWM switching up to 20 kHz. It is used in robotics, factory automation, and security camera pan-tilt systems.
For engineers reviewing the MC34932SEKR2 datasheet, MC34932SEKR2 pinout, MC34932SEKR2 application, or MC34932SEKR2 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options with functional distinctions, and supply-chain support details specific to this 20 kHz variant in Pb-free thermally enhanced packaging.
Technical Context
The MC34932SEKR2 integrates two independent H-bridge drivers sharing only AGND, each with high-side and low-side MOSFETs rated for 5.0 A peak load current and 235 mΩ max RDS(on) at TJ = 150 °C. Its constant-off-time PWM current regulation activates above 6.5 A ±1.5 A and incorporates temperature-dependent foldback-reducing ILIM to ~4.2 A above 165 °C before thermal shutdown at 175 °C.
It uses an internal charge pump (7 MHz) enabling high-side drive at VPWR down to 5.0 V, supports TTL/CMOS logic inputs (3.0 V/5.0 V compatible), and provides two independent disable paths (D1/EN/D2) for tri-state operation or sleep mode (<20 µA per half). Fault detection includes short-circuit-to-GND (11–16 A) and short-circuit-to-VPWR (9.0–14 A), with latch-OFF response within 8.0 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current (Peak) | 5.0 A per H-bridge - supports high-torque DC motors without external current amplification |
| Supply Voltage Range | 5.0 V to 36 V continuous (transient to 40 V) - compatible with 12 V/24 V industrial rails and automotive battery variations |
| RDS(on) (Max) | 235 mΩ at TJ = 150 °C - limits conduction loss to ≤1.2 W per MOSFET at 5 A, enabling compact heatsinking |
| PWM Frequency Support | Up to 20 kHz - enables quiet motor operation and avoids audible noise in consumer/industrial applications |
| Current Feedback Accuracy | 0.24% of high-side load current - provides microcontroller ADC-compatible analog monitoring for closed-loop torque control |
| Fault Response Time | <8.0 µs latch-OFF on short-circuit or overtemperature - prevents MOSFET destruction during transient faults |
| Sleep Mode Current | <20 µA per half-bridge - enables energy-efficient standby in battery-powered robotics and kiosks |
Pinout & Package
MC34932SEKR2 is housed in a 54-pin SOICW-EP (Small Outline Integrated Circuit Wide, Exposed Pad) package with integrated thermal pad for PCB-level heatsinking. The exposed pad (EP) must be soldered to a low-impedance ground plane to maintain RθJC < 1.0 °C/W and sustain full 5.0 A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2, IN3, IN4 | Logic Control Inputs | Independent half-bridge polarity control; Schmitt-triggered, 3.0/5.0 V compatible, default state defined by internal pull-up/pull-down |
| D1, D3 | Disable Inputs (Active High) | Tri-state both outputs of respective H-bridge; ~80 µA source current ensures fail-safe disabled state when floating |
| EN/D2, EN/D4 | Enable/Disable Inputs (Active High) | Enable operation or force sleep mode (<20 µA); internal ~80 µA sink maintains sleep on unpowered MCU I/O |
| OUT1–OUT4 | Power Outputs | H-bridge terminals with integrated body diodes; OUT1/OUT2 = Bridge A, OUT3/OUT4 = Bridge B; require low-inductance routing |
| FBA, FBB | Current Feedback Outputs | Ground-referenced 0.24% proportional current sources - connect 270 Ω resistor to GND for 0.68 mV/mA scaling into MCU ADC |
| SFA, SFB | Status Flag Outputs | Open-drain active-low fault indicators (undervoltage, overcurrent, overtemperature); require external pull-up to VDD < 7.0 V |
| VPWRA, VPWRB | Positive Power Inputs | Multiple pins per bridge - must be shorted together on PCB with wide copper pour to minimize IR drop and EMI |
| PGNDA, PGNDB | Power Grounds | High-current return paths - connect directly to thick ground plane; link PGNDA and PGNDB with low-impedance trace |
| CCPA, CCPB | Charge Pump Capacitor Terminals | Connect 30–100 nF ceramic capacitor between CCPx and corresponding VPWRx - mandatory for high-side gate drive stability |
| AGNDA, AGNDB | Analog Grounds | Low-noise reference for FB and SF circuits; tie to PGND via <10 mΩ path (0–20 kHz) to avoid feedback error |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-dependent current limit foldback | Reduces ILIM from 6.5 A to 4.2 A as TJ rises above 165 °C - enables safe short-duration overload handling without shutdown |
| Integrated current mirror feedback (FBA/FBB) | Delivers 0.24% of high-side current as a ground-referenced current source - eliminates need for external shunt + op-amp for basic torque monitoring |
| Dual independent disable paths per bridge (Dx + EN/Dx) | Allows hardware-level tri-state (Dx) or software-controllable sleep mode (EN/Dx) - supports fail-safe system architecture and ultra-low-power states |
| Robust short-circuit protection | Detects hard shorts to GND (11–16 A) or VPWR (9.0–14 A) and forces latch-OFF within 8.0 µs - protects MOSFETs under cable fault or stall conditions |
| Thermally enhanced SOICW-EP package | Exposed pad + multiple power/ground pins reduce RθJA to <5.0 °C/W with proper PCB layout - sustains 5.0 A continuous current at 70 °C ambient |
Applications
| Robotics Actuation | Factory Automation |
|---|---|
|
Use Scenario: Bidirectional control of joint servos and gripper actuators in collaborative robots operating from 12–24 V DC rails. IC Role / Device Role / Timing Role: Dual H-bridge driver providing independent PWM-controlled torque and direction for two axes, with real-time current feedback for stall detection. Use Value: Enables precise closed-loop position/torque control using on-chip 0.24% current sensing - eliminates external current-sense amplifiers and reduces BOM cost by ≥$0.35 per axis. |
Use Scenario: Driving conveyor belt motors and linear actuators in PLC-controlled assembly lines with frequent start-stop cycles. IC Role / Device Role / Timing Role: Motor driver with integrated overcurrent and overtemperature protection, latching off on fault and signaling via SFA/SFB to PLC I/O. Use Value: Reduces system downtime via fast 8.0 µs fault response and diagnostic flag outputs - avoids catastrophic motor burnout during jam events. |
| Security Camera PTZ | POS/Kiosk Motor Control |
|
Use Scenario: Smooth, silent pan-and-tilt motion in IP-based security cameras powered from PoE+ (up to 57 V with local regulation). IC Role / Device Role / Timing Role: 20 kHz PWM-capable dual H-bridge delivering quiet, jitter-free motion while monitoring motor current for obstruction detection. Use Value: 20 kHz switching eliminates audible whine in indoor environments; integrated current feedback enables auto-stop on physical barrier contact. |
Use Scenario: Controlling cash dispenser mechanisms, card readers, and receipt printers in retail POS terminals and ticket kiosks. IC Role / Device Role / Timing Role: Compact dual motor driver supporting 5 V–24 V input, sleep mode for battery backup, and fault-safe disable during power brownouts. Use Value: Sleep current <20 µA extends backup battery life >72 hours; undervoltage lockout (4.15 V) prevents erratic motor behavior during AC dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33886 | Single-channel 5.0 A H-bridge, 16-pin SOIC, no current feedback output, 10 kHz max PWM | Requires two units for dual-motor control; lacks integrated current sensing - needs external shunt + amplifier | Select when only one motor channel is needed or board space permits dual ICs; not suitable for space-constrained dual-axis designs. |
| TB9051FTG | Single-channel 4.5 A H-bridge, 32-pin QFN, integrated current sense voltage output (not current source), 20 kHz PWM | Higher integration (built-in regulator, SPI interface), but single-channel - requires two devices and adds SPI firmware overhead | Prefer for new designs needing diagnostics via SPI or tighter thermal performance (QFN RθJA = 2.5 °C/W), but increases software complexity. |
Compared with MC34932SEKR2, MC33886 requires duplication and external sensing for dual-axis use, while TB9051FTG offers richer diagnostics but demands SPI implementation and doubles component count - MC34932SEKR2 delivers optimal balance of dual-channel integration, analog current feedback simplicity, and 20 kHz capability in a proven SOICW-EP package.
Availability
MC34932SEKR2 is available at Aetrix Electronics and suitable for robotics actuation, factory automation, and security camera PTZ systems requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance for industrial deployments.
Supply support for MC34932SEKR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in power management and motor control ICs.
The MC34932SEKR2 belongs to NXP's SMARTMOS H-bridge product line, engineered specifically for robust, thermally efficient DC motor control in harsh industrial environments where reliability, fault resilience, and analog integration are critical.
FAQ
What is the maximum continuous output current supported by the MC34932SEKR2?
The MC34932SEKR2 supports 5.0 A peak current per H-bridge, but continuous current depends on PCB heatsinking. With proper thermal design (exposed pad soldered to ground plane, RθJA < 5.0 °C/W), it sustains 5.0 A continuous at 70 °C ambient. At higher temperatures or reduced copper area, RMS current must be derated per the thermal curves in the datasheet. The MC34932SEKR2 includes temperature-dependent current foldback to prevent damage during temporary overloads.
Does the MC34932SEKR2 require external components for basic operation?
Yes - the MC34932SEKR2 requires two external 30–100 nF ceramic capacitors (one per bridge) connected between CCPA/VPWRA and CCPB/VPWRB to enable internal charge pump operation. It also needs external pull-up resistors (≤10 kΩ to VDD < 7.0 V) on SFA and SFB for fault flag reporting, and a 270 Ω resistor from FBA/FBB to GND to convert current feedback to measurable voltage. These are mandatory, not optional, for functional operation.
How does the MC34932SEKR2 handle overtemperature conditions?
The MC34932SEKR2 implements progressive thermal protection: above 165 °C, the current limit threshold folds back from 6.5 A to ~4.2 A to reduce power dissipation; at 175 °C, it triggers latch-OFF shutdown with hysteresis (12 °C), releasing only after junction cools below 163 °C. This allows brief overload survival (<30 s non-repetitive) while preventing permanent damage. The MC34932SEKR2 reports overtemperature via SFA/SFB status flags.
Can the MC34932SEKR2 be used with 5 V logic microcontrollers?
Yes - all logic inputs (IN1–IN4, D1, D3, EN/D2, EN/D4) are 3.0 V/5.0 V TTL/CMOS compatible with built-in hysteresis and internal pull-up/pull-down networks. Input thresholds are VIH ≥ 2.0 V and VIL ≤ 1.0 V, ensuring reliable interfacing with 5 V MCUs without level shifters. The MC34932SEKR2 also supports 5 V VDD for its logic supply, simplifying power domain design.
What is the purpose of the AGNDA and AGNDB pins on the MC34932SEKR2?
AGNDA and AGNDB are dedicated analog ground returns for the current feedback (FBA/FBB) and status flag (SFA/SFB) circuits. They must be connected to the main power ground (PGNDA/PGNDB) via a low-impedance path (<10 mΩ, 0–20 kHz) to prevent noise coupling into sensitive analog signals. Separating analog and power grounds on the MC34932SEKR2 improves current-sense accuracy and fault-flag reliability - improper routing causes feedback offset or false fault triggering.
MC34932SEKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 54-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC, DC Servo
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Logic
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- DC Motors, General Purpose
- Current - Output:
- 5A
- Voltage - Supply:
- 5V ~ 36V
- Voltage - Load:
- 5V ~ 36V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 54-SOIC-EP
MC34932SEKR2 FAQ
1.How can I place an order for MC34932SEKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34932SEKR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC34932SEKR2 reliable?
The price and inventory of MC34932SEKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34932SEKR2 is usually 5 days.
3.What payment methods are accepted for MC34932SEKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34932SEKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34932SEKR2?
MC34932SEKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34932SEKR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC34932SEKR2?
For technical support, including MC34932SEKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34932SEKR2 requirements.
6.How does Aetrix verify that MC34932SEKR2 is sourced from the original manufacturer or authorized distributors?
All MC34932SEKR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC34932SEKR2 meets industry standards.
7.What is the process for return or replacement of MC34932SEKR2?
All MC34932SEKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34932SEKR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC34932SEKR2 part is unused and in its original packaging.
Return procedure for MC34932SEKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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