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Texas Instruments UC2625MNEP
- Part No.:
- UC2625MNEP
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
UC2625MNEP.pdf
- Description:
- IC MOTOR DRIVER 10V-18V 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,357
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Product details
Overview
UC2625MNEP from Texas Instruments is a radiation-tolerant, military-grade brushless DC motor controller IC designed for high-reliability motion control in harsh environments. It integrates fixed-frequency PWM generation, 50-V open-collector high-side drivers, latched soft-start, pulse-by-pulse and average current sensing, tachometer output, and programmable cross-conduction protection. It drives external N-channel MOSFETs or Darlingtons in two- or four-quadrant operation for closed-loop speed control and braking in robotics, aerospace actuators, and defense systems.
For engineers reviewing the UC2625MNEP datasheet, UC2625MNEP pinout, UC2625MNEP application, or UC2625MNEP equivalent, key selection criteria include its –55°C to 125°C operating range, 50-V high-side driver capability, integrated current-sense amplifier with 2.5 V level shift and ~2× gain, direction latch for safe reversal, and oscillator frequency tunable from 30 kHz to 80 kHz via ROSC/COSC.
Technical Context
The UC2625MNEP implements a Hall-effect sensor–based commutation decoder with position latches synchronized to the PWM clock, ensuring noise-immune timing for BLDC motor phase switching. Its dual-mode current sensing supports both peak-limiting (via ISENSE1/ISENSE2 differential input) and average-current regulation (with external RD resistor in four-quadrant mode), enabling precise torque control across load conditions.
It features a dedicated direction latch with speed-dependent transparency: when SPEED-IN < 250 mV (e.g., motor at standstill or low RPM), DIR changes propagate immediately; above that threshold, direction updates are delayed by 1–2 oscillator periods (25–50 µs at 40 kHz) to prevent unsafe power-stage transitions. Cross-conduction prevention is enforced via flip-flop–based dead-time insertion between complementary PU/PD outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | –55°C to 125°C - qualified per JEDEC military standards including HAST, temperature cycling, and bond intermetallic life testing. |
| Oscillator Frequency | 30–80 kHz - set externally via ROSC (10–100 kΩ) and COSC (1–100 nF); enables stable PWM timing across full temperature range. |
| High-Side Driver Voltage | 50 V open-collector - supports direct drive of P-channel MOSFETs or level-shifted gate control for high-voltage N-channel top switches. |
| Current Sense Gain | ~2.0 V/V with 2.5 V level shift - converts differential ISENSE1–ISENSE2 voltage into single-ended ISENSE output referenced to GND. |
| Tachometer Output | Pulsed 5 V logic-level signal on TACH-OUT - each pulse corresponds to one Hall sensor transition; average voltage proportional to motor speed. |
| Soft-Start Discharge Current | 0.1–3.0 mA - controls ramp rate of external SSTART capacitor for controlled motor acceleration and fault recovery. |
| Reference Voltage | 4.7–5.3 V @ –55°C to 125°C - supplies stable 5 V bias for Hall sensors and external circuitry; load-regulated to ±40 mV over –20 mA. |
Pinout & Package
UC2625MNEP is packaged in a 28-pin plastic DIP (PDIP-N) with through-hole mounting and 0.600-inch body width. Pin functions are electrically identical to the SOIC-DW variant but mapped to dual-in-line layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28, 27, 26 | E/A IN(+), E/A IN(–), E/A OUT, PWM IN | Error amplifier inputs/outputs support flexible feedback configurations: voltage-mode (RC-OSC → PWM IN), current-mode (ISENSE → E/A IN(+)), or external DAC control. |
| 3, 4, 5 | ISENSE1, ISENSE2, ISENSE | Differential current sense inputs with built-in absolute value and level shift; ISENSE output delivers 2.5 V + 2×|ISENSE1–ISENSE2| for analog current monitoring. |
| 6, 7 | DIR, SPEED-IN | Direction command with latch enable tied to motor speed; SPEED-IN < 250 mV enables immediate DIR update; higher values enforce 25–50 µs delay for safe reversal. |
| 8, 9, 10 | H1, H2, H3 | Hall-effect sensor inputs with TTL-compatible thresholds and internal pullups; accept 5 V/12 V CMOS, NMOS, or open-collector signals spaced 120° electrical. |
| 12, 13, 14 | PDA, PDB, PDC | Active-high, totem-pole low-side drivers - source up to 500 mA peak to directly drive N-MOSFET gates or Darlingtons' bases. |
| 16, 17, 18 | PUA, PUB, PUC | Active-low, 50-V open-collector high-side drivers - sink up to 50 mA; require external pullup for P-channel MOSFET or charge-pump level shifting. |
| 20 | TACH-OUT | Open-drain tachometer output - pulses on every Hall transition; average voltage linearly tracks motor RPM for closed-loop speed control. |
| 21 | RC-BRAKE | Brake mode trigger - pulled below 0.8–1.2 V to disable all high-side drivers, enable all low-side drivers, and halt tachometer output. |
| 22 | QUAD SEL | Two- vs. four-quadrant mode select - high enables full chopping of all six drivers for equal acceleration/deceleration control in servo applications. |
| 23 | OV-COAST | Overvoltage shutdown or coast command - active-high input with 1.65–1.85 V threshold and 0.05–0.155 V hysteresis for robust noise immunity. |
| 24 | SSTART | Soft-start clamp node - discharged during faults; rising voltage ramps E/A OUT to enable gradual PWM duty-cycle increase and prevent inrush. |
| 25 | RC-OSC | Oscillator timing node - hosts sawtooth ramp (~1.2 Vpp centered at 1.6 V); sets PWM frequency and provides slope compensation for current-mode control. |
| 2, 19, 11, 15 | VREF, VCC, PWR VCC, GND | VREF = 5 V reference (bypass required); VCC = main supply (10–18 V); PWR VCC powers PD drivers; GND = signal/common ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Latched Direction Control | Prevents unsafe motor reversal by delaying DIR updates until motor speed drops below 250 mV or enforcing 25–50 µs dead time - eliminates shoot-through during commutation. |
| Programmable Cross-Conduction Protection | Hardware-enforced dead time via flip-flop latches ensures complementary PU/PD outputs never activate simultaneously - no software or external timing components required. |
| Integrated Current-Sense Amplifier | Delivers 2.5 V level-shifted, 2× gain output from ISENSE1/ISENSE2 - enables accurate pulse-by-pulse peak limiting and average-current feedback without external op amps. |
| Two- and Four-Quadrant Operation | QUAD SEL pin selects chopping mode: two-quadrant (high-side always on) for efficiency; four-quadrant (all drivers chopped) for symmetric torque control in bidirectional servo systems. |
| Tachometer with Noise Blanking | TACH-OUT pulses per Hall transition with automatic 50–100 µs input blanking after each edge - rejects commutation noise while preserving speed resolution up to 100 kRPM. |
Applications
| Robotics Actuation | Aerospace Flight Control |
|---|---|
Use Scenario: Precision joint positioning in autonomous ground vehicles using 3-phase BLDC motors with Hall sensors. IC Role / Device Role / Timing Role: UC2625MNEP performs real-time commutation decoding, current-regulated PWM, and tachometer-based speed feedback - synchronizing motor phase switching to rotor position at up to 100 kRPM. Use Value: Latched DIR and cross-conduction protection eliminate torque ripple during rapid direction reversals; wide temperature range ensures reliability in desert or arctic deployments. | Use Scenario: Actuator control in satellite reaction wheels requiring radiation-hardened, long-life motor drive under thermal vacuum. IC Role / Device Role / Timing Role: UC2625MNEP serves as the core motor controller, managing four-quadrant braking, soft-start sequencing, and overvoltage protection during power bus transients. Use Value: Military-grade qualification (–55°C to 125°C, HAST-tested) and controlled baseline manufacturing ensure 15+ year mission life; 50-V high-side drivers interface directly with space-qualified P-MOSFETs. |
| Defense Vehicle Turrets | Industrial CNC Spindles |
Use Scenario: Stabilized weapon platform azimuth/elevation drives exposed to shock, vibration, and EMI in armored vehicles. IC Role / Device Role / Timing Role: UC2625MNEP executes Hall-sensor–based commutation while rejecting noise via input latches and RC-BRAKE–triggered emergency braking. Use Value: Pulse-by-pulse current sensing prevents winding overcurrent during sudden load impacts; OV-COAST input disables drive during power bus sag or surge events. | Use Scenario: High-speed spindle control in metal-cutting CNC machines requiring smooth acceleration, precise speed regulation, and fast braking. IC Role / Device Role / Timing Role: UC2625MNEP implements closed-loop speed control using TACH-OUT feedback and four-quadrant PWM for equal torque in acceleration and deceleration phases. Use Value: Programmable ROSC/COSC allows tuning oscillator frequency to match mechanical resonance; average current sensing (via RD) enables consistent torque delivery across variable cutting loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushless DC motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UC3625DW | Commercial-grade version (0°C to 70°C), same pinout and functional block diagram but lacks military temp rating and DMS enhancements. | Not qualified for extended temperature or high-reliability programs; suitable only for lab prototypes or non-critical industrial use. | Select UC3625DW only if ambient operating temperature stays within 0–70°C and radiation tolerance is unnecessary. |
| DRV8301HDDCR | Integrated gate driver + current shunt amplifier + buck regulator; 3.3 V logic interface, SPI-configurable, no Hall decoder or tachometer output. | Requires external MCU for commutation logic and speed feedback; better suited for field-oriented control (FOC) than trapezoidal Hall-based systems. | Choose DRV8301HDDCR when migrating to sensorless or FOC architectures; UC2625MNEP remains optimal for Hall-based, standalone BLDC control. |
Compared with UC3625DW and DRV8301HDDCR, UC2625MNEP uniquely combines military-grade temperature resilience, embedded Hall decoding, hardware-enforced cross-conduction protection, and analog tachometer output - making it irreplaceable for ruggedized, self-contained BLDC motion systems where MCU resources or board space are constrained.
Availability
UC2625MNEP is available at Aetrix Electronics and suitable for robotics actuation, aerospace flight control, and defense vehicle turret systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UC2625MNEP 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability ICs for industrial, automotive, and aerospace markets.
The UC2625MNEP belongs to TI's Enhanced Product (EP) line - engineered for mission-critical applications demanding extended temperature operation, controlled baseline manufacturing, and diminished sourcing risk mitigation.
FAQ
What is the maximum supply voltage for UC2625MNEP?
The absolute maximum supply voltage (VCC) for UC2625MNEP is 20 V. It is specified for normal operation between 10 V and 18 V. Operating above 18 V risks exceeding internal voltage ratings and may compromise long-term reliability, especially under temperature extremes. The UC2625MNEP includes under-voltage lockout that disables all outputs below ~7.75 V to prevent erratic behavior during power-up or brownout conditions.
Does UC2625MNEP support both two-quadrant and four-quadrant motor control?
Yes, UC2625MNEP supports both modes via the QUAD SEL pin (Pin 22). When low, it operates in two-quadrant mode - only the low-side drivers (PDA/PDB/PDC) are PWM-chopped while high-side drivers remain on, yielding efficient unidirectional control. When high, all six drivers are chopped for true four-quadrant operation, enabling balanced torque during acceleration and deceleration - essential for servo-grade positioning accuracy in UC2625MNEP-based systems.
How does UC2625MNEP implement current sensing for motor protection?
UC2625MNEP uses a dedicated current-sense amplifier with differential inputs ISENSE1 and ISENSE2. It provides pulse-by-pulse peak limiting (threshold ~0.20 V) and fail-safe overcurrent shutdown (~0.30 V), both referenced to the internal 2.5 V level-shifted baseline. The resulting ISENSE output equals 2.5 V + 2×|ISENSE1–ISENSE2|, enabling analog monitoring or feedback. For average current sensing, an external RD resistor is added in the low-side diode path, used only in four-quadrant mode - a capability confirmed in the UC2625MNEP datasheet's Figure D and Table 1.
Can UC2625MNEP drive high-voltage N-channel MOSFETs on the high side?
UC2625MNEP's high-side drivers (PUA/PUB/PUC) are 50-V open-collector outputs, not bootstrap-capable high-side gate drivers. To drive high-voltage N-channel MOSFETs, external level-shifting circuitry - such as charge pumps, cascode transistor stages, or high-speed optocouplers - must be used. The UC2625MNEP datasheet explicitly states this requirement and provides application examples. Direct drive is limited to P-channel MOSFETs or low-voltage N-channel devices with appropriate gate pullup networks.
What is the purpose of the RC-BRAKE pin on UC2625MNEP?
The RC-BRAKE pin (Pin 21) serves dual functions: first, it sets tachometer pulse width via RT/CT timing components (T ≈ 0.67 × RT × CT); second, pulling it below 0.8–1.2 V triggers hardware brake mode - disabling all high-side drivers (PUA/PUB/PUC), enabling all low-side drivers (PDA/PDB/PDC), and halting TACH-OUT pulses. This provides deterministic, fast-response braking independent of software or MCU intervention - a critical safety feature in UC2625MNEP-based motion systems.
UC2625MNEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Pre-Driver - Half Bridge (3)
- Interface:
- Parallel
- Technology:
- Power MOSFET, Power Darlington
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- -
- Voltage - Supply:
- 10V ~ 18V
- Voltage - Load:
- -
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-PDIP
UC2625MNEP FAQ
1.How can I place an order for UC2625MNEP through Aetrix?
Please submit a Request for Quotation (RFQ) for UC2625MNEP 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 UC2625MNEP reliable?
The price and inventory of UC2625MNEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UC2625MNEP is usually 5 days.
3.What payment methods are accepted for UC2625MNEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UC2625MNEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UC2625MNEP?
UC2625MNEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UC2625MNEP 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 UC2625MNEP?
For technical support, including UC2625MNEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UC2625MNEP requirements.
6.How does Aetrix verify that UC2625MNEP is sourced from the original manufacturer or authorized distributors?
All UC2625MNEP 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 UC2625MNEP meets industry standards.
7.What is the process for return or replacement of UC2625MNEP?
All UC2625MNEP units undergo pre-shipment inspection (PSI). If there is an issue with UC2625MNEP, 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 UC2625MNEP part is unused and in its original packaging.
Return procedure for UC2625MNEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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