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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Texas Instruments UCC2626PWG4

Name: UCC2626PWG4
Brand: Texas Instruments
SKU: UCC2626PWG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UCC2626PWG4

Manufacturer:: Texas Instruments

Category:: Motor Drivers, Controllers

Package:: 28-TSSOP (0.173", 4.40mm Width)

Datasheet:: UCC2626PWG4.pdf

Description:: IC MOTOR DRVR 11V-14.5V 28TSSOP

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Product details

Overview

UCC2626PWG4 from Texas Instruments is a three-phase brushless DC motor controller IC supporting two- and four-quadrant operation, featuring integrated current-sense amplifier (gain = 5), precision tachometer output (variable duty-cycle, frequency-proportional), and 10 kHz oscillator (R_TACH/C_T-programmable). It decodes Hall sensor inputs (HALLA/B/C) to drive six PWM outputs (AHI/ALOW/BHI/BLOW/CHI/CLOW) for external power stage control in industrial motion systems.

For engineers reviewing the UCC2626PWG4 datasheet, UCC2626PWG4 pinout, UCC2626PWG4 application, or UCC2626PWG4 equivalent, key selection criteria include its Hall-decoded commutation logic, QUAD-selectable modulation mode (low-side only vs. full-bridge), differential current sensing with absolute-value output (IOUT), and ±200 mA peak output drive capability for gate drivers.

Technical Context

The UCC2626PWG4 implements a Hall decoder with direction detection (DIR_IN/DIR_OUT), latched PWM comparator, and triangle-wave oscillator synchronized via SYNCH input. Its current-sense path includes a trimmed 5-V reference, differential amplifier with 8 mV max offset, and absolute-value circuit enabling accurate pulse-by-pulse overcurrent protection and closed-loop current control in four-quadrant operation.

It supports two-quadrant (QUAD = 0) and four-quadrant (QUAD = 1) motor control modes: in two-quadrant mode, only low-side switches are PWM-modulated; in four-quadrant mode, both high- and low-side switches are modulated to ensure controlled current decay and bidirectional torque, eliminating uncontrolled circulating currents during reversal.

Key Specifications

Parameter	Value and Actual Design Meaning
Oscillator Frequency	9–11 kHz (set by R_TACH = 250 kΩ, C_T = 1 nF); enables stable PWM timing with 3% voltage sensitivity.
Current Sense Gain	5.00 V/V (±1.5%); provides precise motor phase current reconstruction at IOUT pin for protection and feedback.
Tachometer Output	Variable duty-cycle square wave (frequency ∝ RPM); on-time programmable via R_TACH/C_TACH; usable for digital or analog speed feedback.
Output Drive Capability	±200 mA per AHI/ALOW/BHI/BLOW/CHI/CLOW pin; sufficient to directly drive gate drivers like IR2110 without buffering.
Supply Range & UVLO	VDD = 12 V typical; undervoltage lockout activates below 10.5 V with 0.4 V hysteresis, preventing erratic startup.
Reference Voltage	VREF = 5.0 V ±2%, 5 mA max output; supplies bias for Hall sensors and external circuitry with 10 mV line/load regulation.
Operating Temperature	–40°C to +85°C; qualified for industrial motor control environments with full parameter performance guaranteed.

Pinout & Package

TSSOP-28 (PW) package: 4.4 mm × 9.7 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant NIPDAU finish, MSL Level-2 (260°C peak reflow).

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Power and signal reference ground	Primary return path for all internal circuits; bypass capacitors must connect here to minimize noise coupling.
VREF (Pin 2)	Trimmed 5-V reference output	Stable bias source for Hall sensors and external analog circuitry; requires ≥0.1 µF ceramic bypass to GND.
TACH_OUT (Pin 3)	Monostable tachometer output	Variable-duty-cycle square wave triggered by Hall transitions; frequency proportional to motor RPM.
R_TACH (Pin 4)	Tachometer timing resistor connection	Sets charge current for C_TACH; programs tachometer on-time (t_ON = R_TACH × C_TACH).
C_TACH (Pin 5)	Tachometer timing capacitor connection	Charged by R_TACH current; determines TACH_OUT pulse width; must be grounded directly at pin.
CT (Pin 6)	Oscillator timing capacitor connection	Charged/discharged between 2.5 V and 7.5 V; sets PWM frequency with R_TACH (f_OSC ≈ 2.5/(R_TACH × C_T))
SYNCH (Pin 7)	External oscillator synchronization input	Positive-edge-triggered; forces CT discharge; requires parallel R_TACH when active; must be grounded if unused.
DIR_OUT (Pin 8)	Decoded rotor direction output	Digital signal indicating clockwise/counterclockwise rotation based on Hall sequence; matches DIR_IN polarity during motoring.
SNS_NI (Pin 9)	Current sense amplifier non-inverting input	Accepts one side of shunt resistor; paired with SNS_I for differential measurement of motor phase current.
SNS_I (Pin 10)	Current sense amplifier inverting input	Accepts other side of shunt resistor; internal gain = 5; output at IOUT includes absolute-value function.
IOUT (Pin 11)	Current sense and absolute-value amplifier output	Analog representation of \|I_{SNS_I} – I_{SNS_NI}\| × 5; used for overcurrent protection and current loop closure.
OC_REF (Pin 12)	Overcurrent comparator reference input	Analog threshold setting for current-limit trip; compared against IOUT to trigger shutdown on overcurrent.
PWM_I (Pin 13)	PWM comparator inverting input	Receives current or voltage error signal; compared against triangle waveform on CT for duty-cycle generation.
PWM_NI (Pin 14)	PWM comparator non-inverting input	Receives triangle waveform from oscillator; latched comparison produces PWM output for power stage.
VDD (Pin 15)	Positive supply input	12 V nominal; powers internal logic, amplifiers, and outputs; requires ≥0.1 µF ceramic bypass to GND.
AHI (Pin 16)	Phase A high-side gate drive output	Digital output controlling upper MOSFET/FET in phase A leg; ±200 mA capable; active during commutation states.
ALOW (Pin 17)	Phase A low-side gate drive output	Digital output controlling lower MOSFET/FET in phase A leg; ±200 mA capable; modulated in QUAD=0 or QUAD=1 mode.
BHI (Pin 18)	Phase B high-side gate drive output	Digital output controlling upper MOSFET/FET in phase B leg; decoded from Hall inputs per Table 1.
BLOW (Pin 19)	Phase B low-side gate drive output	Digital output controlling lower MOSFET/FET in phase B leg; complements BHI per commutation state.
CHI (Pin 20)	Phase C high-side gate drive output	Digital output controlling upper MOSFET/FET in phase C leg; part of six-output Hall decoder set.
CLOW (Pin 21)	Phase C low-side gate drive output	Digital output controlling lower MOSFET/FET in phase C leg; ensures complementary switching with CHI.
DIR_IN (Pin 22)	Direction command input	Digital input selecting forward/reverse sequencing of Hall decoding; determines DIR_OUT polarity.
QUAD (Pin 23)	Quadrant mode select input	Logic-high enables four-quadrant (full-bridge PWM); logic-low restricts to two-quadrant (low-side PWM only).
BRAKE (Pin 24)	Brake command input	Active-high signal forcing all low-side outputs ON and all high-side outputs OFF; maintains tachometer operation.
COAST (Pin 25)	Coast command input	Hysteretic comparator input (1.75 V threshold); disables all outputs when above threshold for bus clamp.
HALLC (Pin 26)	Rotor position sensor input C	Accepts 120°-spaced Hall sensor signal; internally pulled up to VREF; requires RC filtering per Figure 2.
HALLB (Pin 27)	Rotor position sensor input B	Second 120° Hall input; same electrical specs as HALLC; used with HALLA/HALLC for commutation decoding.
HALLA (Pin 28)	Rotor position sensor input A	First 120° Hall input; completes three-input position sensing; decoding table provided in datasheet.

Key Features

Feature	Design Value
Integrated Hall Decoder with Direction Detection	Directly interprets 120° Hall sensor sequences (HALLA/B/C) to generate six commutation outputs and DIR_OUT signal-eliminates need for external logic or microcontroller-based decoding.
Configurable Quadrant Operation (QUAD pin)	Selects between two-quadrant (low-side PWM only, reduced switching loss) and four-quadrant (full-bridge PWM, controlled reversal) modes via single logic input-enables application-specific optimization.
Differential Current Sensing + Absolute-Value Circuit	5-V/V gain amplifier with 8 mV max offset and on-chip absolute-value function delivers IOUT proportional to \|phase current\|-supports both pulse-by-pulse overcurrent protection and closed-loop current control.
Precision Variable-Duty-Cycle Tachometer	TACH_OUT provides frequency-proportional, duty-cycle-variable output (t_ON set by R_TACH/C_TACH); usable directly for microcontroller speed capture or low-pass filtered for analog velocity feedback.
Synchronizable Oscillator with Triangle Waveform	CT pin delivers clean 5-Vpp triangle waveform; SYNCH input accepts external clock edges to align PWM timing across multiple controllers-critical for multi-axis coordinated motion.
Robust Protection Logic	Integrated BRAKE, COAST, and UVLO functions disable outputs under fault conditions while preserving tachometer output-ensures safe motor stop and bus voltage management.

Applications

Industrial Servo Drives	Electric Power Steering (EPS)
Use Scenario: Closed-loop position/speed control of PMSM or BLDC motors in CNC machines and robotic arms using Hall sensors and external gate drivers. IC Role / Device Role / Timing Role: UCC2626PWG4 acts as the real-time commutation engine-decoding Hall signals, generating six synchronized PWM outputs, and providing tach feedback for outer velocity loops. Use Value: Enables deterministic, low-jitter commutation with <150 ns PWM comparator propagation delay and 10 kHz oscillator stability-reducing torque ripple and improving positional accuracy.	Use Scenario: Compact, high-reliability motor controller for automotive EPS systems requiring fail-safe braking and directional torque control. IC Role / Device Role / Timing Role: UCC2626PWG4 serves as the core motor controller-managing QUAD-mode switching, DIR_IN/DIR_OUT direction tracking, and BRAKE-initiated forced conduction for immediate torque removal. Use Value: Delivers ±200 mA gate drive per output and integrated coast/brake logic-supporting ASIL-B–aligned safety mechanisms without external supervision circuitry.
Medical Infusion Pumps	Automated Guided Vehicles (AGVs)
Use Scenario: Precise, low-noise motor control in battery-powered infusion pumps where silent operation and consistent flow rate are critical. IC Role / Device Role / Timing Role: UCC2626PWG4 functions as the current-regulated motor driver-using IOUT for real-time current feedback and TACH_OUT for speed verification in safety-critical dosing algorithms. Use Value: Provides 5-V reference and 8 mV current-sense offset-enabling sub-mA current resolution and <0.5% speed regulation over temperature for accurate fluid delivery.	Use Scenario: Multi-motor traction control in warehouse AGVs requiring coordinated speed and torque response across drive wheels. IC Role / Device Role / Timing Role: UCC2626PWG4 operates as a distributed motor controller-leveraging SYNCH input to align PWM timing across multiple units and DIR_OUT for closed-loop steering correction. Use Value: Supports synchronized oscillator operation and robust Hall decoding-ensuring smooth, jitter-free wheel speed matching and reducing mechanical wear during turns.

Industrial Servo Drives

Electric Power Steering (EPS)

Use Scenario: Closed-loop position/speed control of PMSM or BLDC motors in CNC machines and robotic arms using Hall sensors and external gate drivers.

IC Role / Device Role / Timing Role: UCC2626PWG4 acts as the real-time commutation engine-decoding Hall signals, generating six synchronized PWM outputs, and providing tach feedback for outer velocity loops.

Use Value: Enables deterministic, low-jitter commutation with <150 ns PWM comparator propagation delay and 10 kHz oscillator stability-reducing torque ripple and improving positional accuracy.

Use Scenario: Compact, high-reliability motor controller for automotive EPS systems requiring fail-safe braking and directional torque control.

IC Role / Device Role / Timing Role: UCC2626PWG4 serves as the core motor controller-managing QUAD-mode switching, DIR_IN/DIR_OUT direction tracking, and BRAKE-initiated forced conduction for immediate torque removal.

Use Value: Delivers ±200 mA gate drive per output and integrated coast/brake logic-supporting ASIL-B–aligned safety mechanisms without external supervision circuitry.

Medical Infusion Pumps

Automated Guided Vehicles (AGVs)

Use Scenario: Precise, low-noise motor control in battery-powered infusion pumps where silent operation and consistent flow rate are critical.

IC Role / Device Role / Timing Role: UCC2626PWG4 functions as the current-regulated motor driver-using IOUT for real-time current feedback and TACH_OUT for speed verification in safety-critical dosing algorithms.

Use Value: Provides 5-V reference and 8 mV current-sense offset-enabling sub-mA current resolution and <0.5% speed regulation over temperature for accurate fluid delivery.

Use Scenario: Multi-motor traction control in warehouse AGVs requiring coordinated speed and torque response across drive wheels.

IC Role / Device Role / Timing Role: UCC2626PWG4 operates as a distributed motor controller-leveraging SYNCH input to align PWM timing across multiple units and DIR_OUT for closed-loop steering correction.

Use Value: Supports synchronized oscillator operation and robust Hall decoding-ensuring smooth, jitter-free wheel speed matching and reducing mechanical wear during turns.

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
UCC3626PW	Same pinout and architecture, but rated for 0°C to +70°C ambient; oscillator tolerance ±3% (vs. ±4% for UCC2626PWG4); identical tachometer and current-sense specs.	Targeted at commercial-grade systems without extended temperature requirements; lacks industrial-grade qualification.	Select UCC3626PW only if operating environment stays within 0–70°C and tighter oscillator accuracy is required.
DRV8301DCA	Integrated gate drivers + current shunt amplifiers; no Hall decoder or tach output; SPI interface for configuration; 3.3-V logic compatible.	Requires external MCU for commutation logic and speed feedback processing; suited for designs with existing processor infrastructure.	Choose DRV8301DCA when system already uses a host MCU for motion control and higher integration (gate drive + sensing) is prioritized over standalone Hall decoding.

Compared with UCC3626PW, the UCC2626PWG4 offers wider temperature range (–40°C to +85°C) and is optimized for industrial motion systems requiring robust Hall-based commutation without host processor dependency; compared with DRV8301DCA, it eliminates MCU firmware development for basic BLDC control but requires external gate drivers and discrete power stage design.

Availability

UCC2626PWG4 is available at Aetrix Electronics and suitable for industrial servo drives, electric power steering modules, medical infusion pumps, and automated guided vehicle traction systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for UCC2626PWG4 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 power management technologies, with decades of expertise in motor control IC design.

The UCC2626PWG4 belongs to TI's legacy UCC3626/UCC2626 family of Hall-decoded BLDC controllers, engineered specifically for cost-sensitive, high-reliability industrial and automotive motion systems requiring deterministic commutation and integrated diagnostics.

FAQ

What is the operating temperature range for the UCC2626PWG4?

The UCC2626PWG4 is specified for operation from –40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in demanding environments such as factory automation equipment, outdoor robotics, and automotive under-hood applications where thermal extremes are common. All electrical characteristics-including oscillator frequency, current-sense gain, and UVLO thresholds-are guaranteed across this full range.

How does the QUAD pin affect PWM behavior in the UCC2626PWG4?

When QUAD = 0 (logic low), the UCC2626PWG4 modulates only the low-side outputs (ALOW/BLOW/CLOW) while keeping high-side outputs (AHI/BHI/CHI) static-reducing switching losses in two-quadrant applications. When QUAD = 1 (logic high), both high- and low-side outputs are PWM-modulated, enabling controlled current decay and true four-quadrant torque reversal without uncontrolled circulating currents.

Can the UCC2626PWG4 drive MOSFET gates directly, or is external gate driving required?

The UCC2626PWG4 provides ±200 mA peak output current per gate drive pin (AHI/ALOW/BHI/BLOW/CHI/CLOW), which is sufficient to drive medium-power MOSFETs (e.g., IRF730) in low-frequency (<20 kHz) applications. However, for high-speed switching or high-capacitance FETs, external gate drivers like the IR2110 are recommended to ensure fast edge rates and robust noise immunity-per Figure 17 in the datasheet.

What is the function of the IOUT pin on the UCC2626PWG4?

The IOUT pin delivers the output of the integrated differential current-sense amplifier (gain = 5) combined with an absolute-value circuit. It provides an analog voltage proportional to |I_{SNS_I} – I_{SNS_NI}| × 5, enabling both pulse-by-pulse overcurrent protection (via OC_REF comparison) and closed-loop current control. This eliminates the need for external op-amps or rectification circuitry in most BLDC current feedback designs.

Is the UCC2626PWG4 pin-compatible with other devices in the UCC3626 family?

Yes-the UCC2626PWG4 shares identical pinout, package (TSSOP-28), and functional architecture with UCC2626PW, UCC3626PW, and UCC3626DW. Differences are limited to temperature grade (–40°C to +85°C vs. 0°C to +70°C) and oscillator accuracy (±4% vs. ±3%). No PCB layout changes are needed when substituting within the same package variant, though system-level validation of timing and thermal margins is recommended.

UCC2626PWG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 28-TSSOP (0.173", 4.40mm Width)

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushless DC (BLDC)

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver - Half Bridge (3)

Interface:: PWM

Technology:: -

Step Resolution:: -

Applications:: General Purpose

Current - Output:: -

Voltage - Supply:: 11V ~ 14.5V

Voltage - Load:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-TSSOP

UCC2626PWG4 FAQ

1.How can I place an order for UCC2626PWG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for UCC2626PWG4 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 UCC2626PWG4 reliable?

The price and inventory of UCC2626PWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC2626PWG4 is usually 5 days.

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UCC2626PWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UCC2626PWG4 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 UCC2626PWG4?

For technical support, including UCC2626PWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC2626PWG4 requirements.

6.How does Aetrix verify that UCC2626PWG4 is sourced from the original manufacturer or authorized distributors?

All UCC2626PWG4 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 UCC2626PWG4 meets industry standards.

7.What is the process for return or replacement of UCC2626PWG4?

All UCC2626PWG4 units undergo pre-shipment inspection (PSI). If there is an issue with UCC2626PWG4, 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 UCC2626PWG4 part is unused and in its original packaging.

Return procedure for UCC2626PWG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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