DRV8434ARGER - 48V 2.5A Stepper Driver w/ Stall Detect | TI
N.º da peça: DRV8434ARGER ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.95 | $4,95 |
| 10 | $4.42 | $44,20 |
| 100 | $3.78 | $378,00 |
| 500 | $3.32 | $1.660,00 |
| 1.000 | $2.96 | $2.960,00 |
| 3.000 | $2.65 | $7.950,00 |
DRV8434ARGER Visão geral
What is a bipolar stepper motor driver? A bipolar stepper motor driver is an integrated H-bridge circuit that drives the two coils of a two-phase bipolar stepper motor by reversing current flow through each coil on every step. It sits within the broader hierarchy: motor driver -> motion control -> power management IC -> semiconductor. The DRV8434A family adds integrated current sensing (using an internal sense FET), microstepping indexer (up to 1/256 step), and stall detection - features historically requiring external comparators, ADCs, and an MCU.
Key features include a 4.5 V to 48 V wide operating supply range, 2.5 A full-scale output current per H-bridge, 1/256 microstepping indexer, Smart Tune decay mode (mixed decay), integrated current sensing (no external sense resistor required), stall detection output on a GPIO pin, and a low-power nSLEEP pin. Protection features include supply undervoltage, charge pump fault, overcurrent, short circuit, open load, and overtemperature shutdown, with faults flagged on the nFAULT pin.
The DRV8434ARGER uses TI's Smart Tune technology that dynamically adjusts the fast-decay portion of each PWM cycle to minimize current ripple and audibility. The integrated current-sense path eliminates the bulky external sense resistor and its associated power dissipation, allowing tighter PCB layouts in compact camera gimbals, medical pumps, and small-format 3D printers.
Typical applications include 3D printers (extruder and bed motors), security cameras and PTZ platforms, textile and sewing machines, medical infusion pumps, and factory automation stages. The wide 48 V input supports industrial 24 V and 36 V bus rails with margin for inductive transients.
When designing with this part, place the VM and VINT bypass capacitors as close as possible to the pins and follow TI's recommended 4-layer thermal layout for the RGE package. The stall detection GPIO must be configured via SPI to avoid false triggers during acceleration ramps - see the device datasheet for the recommended configuration sequence.
This page synthesizes distributor pricing, drop-in alternatives from the same DRV8434 family, and practical PCB layout notes not found on the manufacturer product page alone.
Alternativas drop-in para DRV8434ARGER — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com DRV8434ARGER (mesmo formato e footprint) — diferindo em Control Interface, Motor Type, Package, Current Sensing, MSL Level.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
DRV8434RGER
✅ Drop-In✓ Em estoque
$2.79 / unidade
Ver ficha técnica →DRV8434ERGER
✅ Drop-In✓ Em estoque
$1.59 / unidade
Ver ficha técnica →DRV8434AQRGER
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DRV8434SRGER
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DRV8434PRGER
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DRV8434ARGER Classificações máximas e características elétricas
| Motor Type | Bipolar stepper |
| Number of H-Bridges | 2 |
| Configuração de saída | NMOS H-bridge |
| Supply Voltage (VM) | 4.5 V to 48 V |
| Full-Scale Output Current | 2.5 A per phase (peak) |
| RMS Output Current | 1.5 A per phase (typical) |
| Microstepping Resolution | Full-step to 1/256 step |
| Current Sensing | Integrated (no external sense resistor) |
| Stall Detection | Yes (GPIO output) |
| Decay Mode | Smart Tune (mixed decay) |
| Control Interface | Step/Direction + SPI |
| Sleep Pin | Yes (nSLEEP, active low) |
| Fault Pin | Yes (nFAULT, active low, open-drain) |
| Protection Features | UVLO, OCP, OVP, OTP, open load, stall |
| Temperatura de operação | -40 C to +125 C |
| Encapsulamento | VQFN-24 (RGE) 4x4 mm with thermal pad |
| Tipo de montagem | Surface Mount |
| Nível MSL | 2 (1 year floor life) |
| Status RoHS | Compliant |
Configuração de pinos do DRV8434ARGER
| Pino 1 | VM — Motor supply voltage (4.5 V to 48 V) |
| Pino 2 | CP1 — Charge pump flying capacitor terminal 1 |
| Pino 3 | CP2 — Charge pump flying capacitor terminal 2 |
| Pino 4 | VCP — Charge pump output (high-side gate drive) |
| Pino 5 | OUT1A — H-bridge 1 output A |
| Pino 6 | OUT1B — H-bridge 1 output B |
| Pino 7 | OUT2A — H-bridge 2 output A |
| Pino 8 | OUT2B — H-bridge 2 output B |
| Pino 9 | GND — Power and signal ground |
| Pino 10 | AVDD — Internal LDO output (3.3 V), bypass to GND |
| Pino 11 | DVDD — Internal LDO output for logic, bypass to GND |
| Pino 12 | nSLEEP — Sleep mode input (active low) |
| Pino 13 | nFAULT — Fault output (active low, open-drain) |
| Pino 14 | STEP — Step input (rising edge advances one microstep) |
| Pino 15 | DIR — Direction input (logic level sets motor rotation) |
| Pino 16 | EN/NSLEEP — Enable / sleep control |
| Pino 17 | STL/GPIO — Stall detection output / general-purpose IO |
| Pino 18 | TRQ |
| Pino 19 | VREF — Current set reference input |
| Pino 20 | SCK — SPI clock input |
| Pino 21 | SDI — SPI data input |
| Pino 22 | SDO — SPI data output |
| Pino 23 | nSCS — SPI chip select (active low) |
| Pino 24 | M0 — Microstepping mode select bit 0 |
Aplicações típicas
DRV8434ARGER é adequado para 6 aplicaçãos: 3D Printer Extruder and Bed Stepper Motors, PTZ Security Camera Pan/Tilt Heads, Medical Infusion Pumps, Factory Automation Linear Stages, Textile and Sewing Machines, Robotics Joint Actuators.
3D Printer Extruder and Bed Stepper Motors
The DRV8434ARGER's 2.5 A peak per phase easily drives NEMA 17 stepper motors used in 3D printer extruders and heated beds, while its 1/256 microstepping indexer produces smooth, artifact-free motion down to 0.0078 degree per step. Integrated current sensing eliminates the two external sense resistors typically required by discrete stepper driver designs, reducing PCB area by ~40 percent. Smart Tune mixed-decay control minimizes mid-band resonance and audible noise, which is critical for desktop 3D printers operated in office environments. Stall detection on the GPIO enables filament-runout detection and bed-leveling fault reporting.
Recomendado
PTZ Security Camera Pan/Tilt Heads
The DRV8434ARGER drives the pan and tilt stepper motors in PTZ surveillance cameras with quiet, vibration-free motion thanks to its 1/256 microstepping and Smart Tune decay. The integrated current-sense path eliminates bulky external resistors, allowing the driver to fit inside compact camera housings with strict size constraints. Stall detection via GPIO signals when the camera reaches a mechanical end-stop, enabling firmware to halt motion before gear damage occurs. The 4.5 V to 48 V VM range supports PoE-derived 24 V and 12 V camera rails without additional regulators.
Recomendado
Medical Infusion Pumps
In medical infusion pumps, the DRV8434ARGER's integrated current sensing and precise microstepping deliver accurate volumetric flow rates by moving a peristaltic stepper with sub-millimeter precision. Stall detection provides a critical safety interlock: if the infusion line is occluded, the GPIO signals the fault to the pump MCU, triggering an alarm and halting the motor within milliseconds. The 48 V VM maximum supports battery-pack voltages from 6-cell Li-Ion stacks with margin. Low-power nSLEEP mode reduces quiescent current to single-digit microamps for battery-powered portable infusion devices.
Recomendado
Factory Automation Linear Stages
The DRV8434ARGER is well matched to factory automation linear stages driving lead-screw or ball-screw stepper actuators. Its 2.5 A peak per phase handles NEMA 23 frame motors common in pick-and-place machines. The 4.5 V to 48 V supply range accommodates industrial 24 V and 36 V DC bus rails directly. Integrated protections (UVLO, OCP, OTP, open load) protect the driver from harsh factory electrical environments. Smart Tune decay automatically adapts to varying motor loads, reducing commissioning time for new machine builds.
Recomendado
Textile and Sewing Machines
The DRV8434ARGER's quiet Smart Tune decay and 1/256 microstepping deliver the smooth, low-noise motion required for textile machines that stitch patterns at high speeds. The 2.5 A peak current supports NEMA 17 and small NEMA 23 stepper motors driving fabric-feed and needle-positioning axes. Integrated stall detection helps detect thread breakage or fabric jams, immediately halting the machine to prevent material waste. The VQFN-24 (RGE) 4x4 mm package fits into the compact control enclosures typical of embroidery and quilting machines.
Recomendado
Robotics Joint Actuators
In small collaborative robot joints, the DRV8434ARGER's 48 V tolerance and integrated current sensing enable precise torque control of cycloidal or harmonic-drive stepper actuators. The integrated indexer eliminates external microstepping logic, reducing BOM and PCB area for compact joint modules. Stall detection via GPIO provides a low-cost torque proxy without the complexity of dedicated torque sensors. AEC-Q100 grade option (DRV8434AQRGER) supports automotive and AMRs requiring extended temperature and reliability certification.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DRV8434ARGER — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DRV8434RGER | DRV8434ERGER | DRV8434AQRGER | DRV8434SRGER | DRV8434PRGER |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm |
| Supply Voltage (VM) | 4.5 V to 48 V | 4.5 V to 48 V | 4.5 V to 48 V | 4.5 V to 48 V | 4.5 V to 48 V | 4.5 V to 48 V |
| Peak Output Current per Phase | 2.5 A | 2.5 A | 2.5 A | 2.5 A | 2.5 A | 2.5 A |
| Microstepping Resolution | 1/256 | 1/256 | 1/256 | 1/256 | 1/256 | 1/256 |
| Current Sensing | Integrated (no external resistor) | Integrated | Integrated | Integrated | Integrated | Integrated |
| Stall Detection GPIO | Yes | No | No (encoder instead) | Yes | Yes | Yes |
| Automotive Grade (AEC-Q100) | No | No | No | Yes | No | No |
| Special Feature | Stall detection GPIO | Baseline | Encoder feedback | Auto grade + stall | Spread spectrum (lower EMI) | Parallel interface |
Principais diferenciais
- Integrated current sensing eliminates two external sense resistors (vs DRV8434RGER (no stall GPIO))
- GPIO stall detection for fault reporting (vs DRV8434RGER (no stall GPIO))
- Automotive grade option (DRV8434AQRGER) in same package (vs DRV8434ARGER (industrial))
Notas de projeto
Estimated: at VM=24 V, two phases each at 1.5 A RMS with 90 percent duty, dissipation is roughly (24 V - 4 V) x 1.5 A x 2 phases = 60 W in worst case, but typical 24 V 1.0 A operation dissipates about 8-12 W. The VQFN-24 RGE 4x4 mm package requires a copper pour of at least 1 square inch on the top layer plus thermal vias to an internal plane. Without adequate copper, junction temperature can exceed 125 C at full load.
Place the VM bulk capacitor (10 uF X7R minimum) and a 100 nF Y-rated bypass within 5 mm of pins 1 and 9. The charge pump flying capacitor (CP1-CP2, typically 0.1 uF) must be placed within 3 mm of pins 2-3 to maintain charge-pump efficiency above 90 percent. Keep OUT1A/OUT1B/OUT2A/OUT2B traces at least 0.5 mm from signal traces to avoid switching noise coupling into SPI or GPIO signals.
Do not leave nSLEEP floating - it must be driven high for normal operation. The DRV8434ARGER powers up in an unknown state if nSLEEP is left open. Also, configure stall detection via SPI registers before relying on the GPIO stall output; without configuration the GPIO may produce false triggers during acceleration ramps. Verify the AVDD/DVDD bypass capacitors are 1 uF minimum and placed within 2 mm of their pins.
Connect the exposed thermal pad (pin 25) directly to a large GND copper pour with at least 9 thermal vias (0.3 mm drill, 0.6 mm pad) on a 1.0 mm pitch. This provides a thermal resistance of approximately 30 C/W to ambient on a 4-layer JEDEC board. Keep digital signal traces (SPI, nFAULT) short and route them away from the OUT1/OUT2 high-current traces to prevent switching transients from injecting noise into logic signals.
Informações de conformidade
RoHS and REACH compliant per TI product page. Choose DRV8434AQRGER for AEC-Q100 automotive qualification.
