My Inquiry
My Account
Texas Instruments DRV8434EPWPR
- Part No.:
- DRV8434EPWPR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DRV8434EPWPR.pdf
- Description:
- IC MOTOR DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:2,431
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DRV8434EPWPR from Texas Instruments is a dual H-bridge motor driver IC for bipolar stepper or dual brushed-DC motors, featuring integrated current sensing (±4% full-scale accuracy), 4.5–48 V operating range, 330 mΩ total RDS(ON) per bridge at 24 V/25°C, and Smart Tune dynamic decay control. It delivers up to 2.5-A full-scale stepper current or 4-A peak brushed-DC current in HTSSOP-28 package.
For engineers reviewing the DRV8434EPWPR datasheet, DRV8434EPWPR pinout, DRV8434EPWPR application, or DRV8434EPWPR equivalent, this page provides verified functional identity, validated pin functions, confirmed thermal and electrical specs, real-world decay mode behavior, and precise alternative selection guidance for industrial motion control designs.
Technical Context
The DRV8434EPWPR integrates two N-channel H-bridges with internal current mirror sensing-eliminating external shunt resistors-and a charge pump for high-side gate drive. Its PH/EN control interface enables simple microcontroller interfacing while supporting configurable off-time PWM chopping (7/16/24/32 μs) and quad-level decay mode selection (Smart Tune Dynamic, Ripple Control, mixed, or fast).
Protection includes VM UVLO (4.25 V nominal), charge pump undervoltage lockout, overcurrent detection (4-A threshold), thermal shutdown (150°C), and open-drain nFAULT reporting. Sleep mode draws only 2 µA, and logic inputs accept 1.8-V/3.3-V/5.0-V levels with internal pulldowns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 48 V - supports wide-input industrial power rails without external regulation |
| Output Current Capability | 2.5-A full-scale (stepper), 4-A peak (brushed-DC) - defines maximum continuous winding current under thermal limits |
| Total RDS(ON) | 330 mΩ (HS + LS, 24 V, 25°C) - determines conduction loss and thermal rise at rated load |
| Current Sense Accuracy | ±4% full-scale - enables precise closed-loop current regulation without calibration |
| Decay Mode Options | Smart Tune Dynamic, Smart Tune Ripple Control, mixed (30% fast), fast - selectable per bridge for optimal torque/noise/efficiency trade-offs |
| Off-Time Configurations | 7, 16, 24, or 32 μs - sets PWM chopping frequency and current ripple profile |
| Sleep Current | 2 µA - reduces system standby power in battery or energy-sensitive applications |
Pinout & Package
DRV8434EPWPR uses the HTSSOP-28 (PWP) package with PowerPAD™ thermal pad (9.7 mm × 4.4 mm body). Pin 1 is CPH; pin 14 is GND; pin 28 is CPH; thermal pad must be soldered to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOUT1, AOUT2 | H-bridge A motor outputs | Connect directly to one stepper winding or brushed-DC motor terminals; support bidirectional current flow |
| BOUT1, BOUT2 | H-bridge B motor outputs | Connect to second winding or independent brushed-DC motor; electrically isolated from A-bridge |
| APH, AEN | Bridge A PH/EN control inputs | Phase (forward/reverse) and enable logic - direct interface to MCU GPIO without level-shifting |
| VREFA, VREFB | Current regulation reference inputs | Set full-scale chopping current via external voltage (e.g., 1.32 V = 1-A IFS using KV = 1.32 V/A) |
| ADECAY, BDECAY | Quad-level decay mode select | Four states (GND/1.25V/Hi-Z/330kΩ-to-GND) configure decay per bridge independently |
| TOFF | Off-time configuration input | Selects 7/16/24/32 μs PWM blanking period - critical for current ripple and motor noise |
| nFAULT | Open-drain fault indicator | Pulled low on UVLO, OCP, CPUV, or OTSD; requires external pullup to 1.8/3.3/5.0 V |
| nSLEEP | Low-power mode control | Logic low enters 2-µA sleep; low pulse clears faults; internal pulldown ensures safe default state |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sense | Eliminates external shunt resistors, saving >100 mm² board area and reducing BOM cost and power loss |
| Smart Tune Dynamic Decay | Automatically optimizes decay mode cycle-by-cycle to minimize current ripple without manual tuning |
| Configurable off-time PWM | Four discrete tOFF values allow precise trade-off between current regulation stability and acoustic noise |
| Spread spectrum clocking | Reduces EMI peaks by >10 dB in conducted emissions tests - simplifies EMC compliance |
| Inrush current limiting | Prevents voltage droop and false UVLO during brushed-DC motor startup under heavy load |
Applications
| Printers and Scanners | Factory Automation |
|---|---|
|
Use Scenario: Bidirectional paper feed and carriage positioning in multi-function printers. IC Role / Device Role / Timing Role: Dual H-bridge drives stepper for precision paper advance and brushed-DC for scanner lamp movement. Use Value: Integrated current sensing enables consistent step accuracy across varying line voltage and temperature without recalibration. |
Use Scenario: Conveyor belt indexing and robotic arm joint actuation in PLC-controlled assembly lines. IC Role / Device Role / Timing Role: Drives two independent brushed-DC motors for synchronized motion control with real-time fault reporting. Use Value: nFAULT output enables immediate PLC-level shutdown on overcurrent or thermal events, preventing mechanical damage. |
| Office/Home Automation | Major Home Appliances |
|
Use Scenario: Motorized blinds, smart locks, and HVAC damper control in residential IoT systems. IC Role / Device Role / Timing Role: Single-chip solution for quiet, low-power bidirectional actuation with sleep-mode current <2 µA. Use Value: Smart Tune Ripple Control minimizes audible motor whine during slow-speed positioning - critical for living spaces. |
Use Scenario: Drum rotation and water valve actuation in washing machines and dishwashers. IC Role / Device Role / Timing Role: Controls high-torque brushed-DC motors under humid, thermally variable conditions. Use Value: 48-V max rating and robust protection (UVLO, OTSD, OCP) ensure reliable operation despite mains voltage fluctuations and load surges. |
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 |
|---|---|---|---|
| DRV8424EPWPR | Same 330 mΩ RDS(ON), but 33-V max VM and no Smart Tune Ripple Control | Limited to lower-voltage brushed-DC systems; lacks advanced decay for low-noise stepper operation | Choose when supply voltage ≤33 V and Smart Tune Ripple Control is unnecessary |
| DRV8436EPWPR | Same 48-V VM rating but 900 mΩ RDS(ON); higher conduction loss and thermal rise at 4-A load | Requires larger heatsinking or derating for same current; less efficient in high-duty-cycle applications | Choose only if footprint compatibility is mandatory and thermal margin allows 900 mΩ losses |
Compared with DRV8424EPWPR and DRV8436EPWPR, the DRV8434EPWPR uniquely combines 48-V operation, 330-mΩ efficiency, and Smart Tune Ripple Control-enabling quieter, cooler, and more flexible motion control in space-constrained industrial designs.
Availability
DRV8434EPWPR is available at Aetrix Electronics and suitable for printers and scanners, factory automation, and major home appliances requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for DRV8434EPWPR 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 over 90 years of innovation in industrial and automotive electronics.
The DRV8434EPWPR belongs to TI's high-performance motor driver product line, engineered specifically for compact, intelligent motion control in industrial equipment where precision, efficiency, and reliability are non-negotiable.
FAQ
What control interface does the DRV8434EPWPR use?
The DRV8434EPWPR uses the PH/EN (Phase/Enable) interface: APH sets direction (forward/reverse), and AEN enables/disables Bridge A. This simplifies MCU GPIO usage with no need for complementary PWM generation. The DRV8434EPWPR does not support IN/IN PWM mode - that is exclusive to the P-suffix variant (DRV8434PPWPR).
How is current regulation set on the DRV8434EPWPR?
Current regulation on the DRV8434EPWPR is set by applying a reference voltage to VREFA and VREFB pins. Full-scale current (IFS) equals VREFx divided by transimpedance gain KV (1.32 V/A typical), so 1.32 V yields 1-A IFS. The internal current mirror eliminates external sense resistors, and accuracy is ±4% across temperature and supply voltage.
Does the DRV8434EPWPR require external capacitors?
Yes - the DRV8434EPWPR requires five key external capacitors: two 0.01-μF X7R ceramics from VM to PGND (pins 2 & 13), one 0.22-μF X7R from VCP to VM, one 0.022-μF X7R from CPH to CPL, and one 0.47–1-μF X7R from DVDD to GND. These are mandatory for stable charge pump operation, low-noise regulation, and EMI suppression.
What thermal performance can be expected from the DRV8434EPWPR in HTSSOP-28?
In the HTSSOP-28 (PWP) package, the DRV8434EPWPR has RθJA = 29.7°C/W (junction-to-ambient, still air) and RθJB = 9.3°C/W (junction-to-board). With proper thermal pad soldering to a 4-layer PCB with ≥2 in² copper pour, it sustains 2.5-A full-scale stepper current continuously at 25°C ambient - verified per TI's SLOSE49 datasheet Section 6.4.
Can the DRV8434EPWPR drive four unidirectional brushed-DC motors?
Yes - the DRV8434EPWPR's dual H-bridges can independently control four unidirectional brushed-DC motors by wiring each motor between one output (e.g., AOUT1) and ground, using APH/AEN to control direction and enable. This configuration leverages the device's full 4-A peak per bridge capability while maintaining independent control and fault isolation.
DRV8434EPWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- On/Off
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Printer
- Current - Output:
- 2.5A
- Voltage - Supply:
- 4.5V ~ 48V
- Voltage - Load:
- 4.5V ~ 48V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
DRV8434EPWPR FAQ
1.How can I place an order for DRV8434EPWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8434EPWPR 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 DRV8434EPWPR reliable?
The price and inventory of DRV8434EPWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8434EPWPR is usually 5 days.
3.What payment methods are accepted for DRV8434EPWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8434EPWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8434EPWPR?
DRV8434EPWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8434EPWPR 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 DRV8434EPWPR?
For technical support, including DRV8434EPWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8434EPWPR requirements.
6.How does Aetrix verify that DRV8434EPWPR is sourced from the original manufacturer or authorized distributors?
All DRV8434EPWPR 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 DRV8434EPWPR meets industry standards.
7.What is the process for return or replacement of DRV8434EPWPR?
All DRV8434EPWPR units undergo pre-shipment inspection (PSI). If there is an issue with DRV8434EPWPR, 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 DRV8434EPWPR part is unused and in its original packaging.
Return procedure for DRV8434EPWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DRV8434EPWPR Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
