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

STMicroelectronics E-PBL3717A

Name: E-PBL3717A
Brand: STMicroelectronics
SKU: E-PBL3717A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-PBL3717A

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: E-PBL3717A.pdf

Description:: IC MOTOR DRVR BIPOLAR 16POWERDIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

E-PBL3717A from STMicroelectronics is a monolithic bipolar stepper motor driver IC with chopper-controlled current regulation, supporting full/half/quarter-step operation, 1 A continuous output current per phase, 10–46 V motor supply voltage, and digitally or analog-controlled current levels via two logic inputs and an external reference voltage. It integrates an H-bridge power stage with built-in clamp diodes and thermal protection, used in precision motion control subsystems for industrial automation actuators.

For engineers reviewing the E-PBL3717A datasheet, E-PBL3717A pinout, E-PBL3717A application, or E-PBL3717A equivalent, key selection criteria include its 3-level programmable current control (via INPUT0/INPUT1), PHASE-direction logic interface, RC-programmable decay time (toff = 0.69·RT·CT), external sense resistor connection (pin 16), and Powerdip-16 package thermal performance (Rth j-amb = 40 °C/W on 20 cm² copper).

Technical Context

The E-PBL3717A implements a fixed-frequency chopper control architecture using three internal comparators referenced to an externally set voltage (pin 11) and selected by TTL-compatible INPUT0/INPUT1 logic (pins 9/7). Current decay timing is determined by an external RC network on pin 2 (PULSE TIME), generating a monostable off-time pulse triggered by comparator output edges.

Its full H-bridge output stage (pins 1/15 = OUTPUT B/A) features integrated fast clamp diodes and separate emitter sensing (pin 16) for accurate current feedback. Logic circuitry operates from a dedicated 5 V supply (pin 6), while motor power splits across pins 3/14 (SUPPLY VOLTAGE B/A) and ground pins 4/5/12/13 - enabling independent thermal management via PCB copper area.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	1 A DC per phase - enables driving NEMA 17–23 bipolar stepper motors with torque up to ~0.5 N·m at rated voltage.
Motor Supply Range	10–46 V - supports 12 V, 24 V, and 36 V industrial motor rails without external regulators.
Saturation Voltage	1.1–2.8 V (sink/source, IM = 0.5–1 A) - determines conduction loss and junction temperature rise under load.
Current Decay Time	25–35 µs (RT = 56 kΩ, CT = 820 pF) - sets minimum step rate and current ripple during recirculation.
Logic Supply	4.75–5.25 V (pin 6) - requires stable 5 V rail; logic inputs tolerate 0.8 V low / 2×Vss high thresholds.
Junction Temp Limit	150 °C with thermal shutdown - soft intervention prevents abrupt fault lockout during overload.
Package Thermal Rθ	40 °C/W (junction-to-ambient, 20 cm² copper) - mandates ≥35 µm thick PCB copper pour for >1 W continuous dissipation.

Pinout & Package

Supplied in a 16-pin Powerdip (Plastic Dual In-line Package) with 12 + 2 + 2 lead configuration - four ground pins (4,5,12,13) serve dual roles as electrical returns and thermal conduction paths to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1,15	OUTPUT B / OUTPUT A	H-bridge high-side and low-side outputs - connect directly to one motor winding; require external flyback filtering for EMI suppression.
2	PULSE TIME	RC input for monostable off-time generator - sets current decay duration (toff = 0.69·RT·CT); critical for step resolution and thermal stability.
3,14	SUPPLY VOLTAGE B / A	Split motor supply inputs - decouple half-bridge sections to reduce crosstalk and improve layout symmetry.
4,5,12,13	GROUND	Common return and thermal sink - must be soldered to ≥20 cm² of 35 µm copper for rated 1 A operation.
6	LOGIC SUPPLY	Dedicated 5 V input for internal logic - isolated from motor supply to prevent noise coupling into control circuitry.
7,9	INPUT 1 / INPUT 0	3-level current select logic - truth table defines no/low/medium/high current (e.g., 0/0.3/0.6/1.0 A) based on Rs and VREF.
8	PHASE	Direction control input - TTL-compatible with Schmitt trigger; controls current flow direction (A→B or B→A) with short-circuit prevention delay.
10	COMPARATOR INPUT	Feedback node for current sense amplifier - accepts filtered voltage from external Rs; comparator trips when sense exceeds selected VREF threshold.
11	REFERENCE	Analog current setpoint input - voltage here (0–15 V) scales all three comparator thresholds linearly; primary analog current control path.
16	SENSE RESISTOR	Emitter sensing node - connects external low-value resistor (e.g., 0.1 Ω) between lower transistors and ground for precise current measurement.

Key Features

Feature	Design Value
Programmable Step Resolution	Full/half/quarter-step modes enabled by external logic sequencing - eliminates need for external microstepping controller ICs.
Integrated Clamp Diodes	Four internal fast recovery diodes per H-bridge - reduce external component count and PCB footprint vs discrete MOSFET+diode solutions.
Dual Current Control	Both digital (INPUT0/INPUT1) and analog (pin 11 VREF) current setting - supports coarse/fine tuning for torque optimization and acoustic noise reduction.
Thermal Protection	Soft shutdown at 150 °C junction temperature - maintains system responsiveness during transient overloads instead of hard latch-off.
Split Motor Supply Pins	Independent SUPPLY A/B (pins 3/14) - allows asymmetric rail design and simplifies layout for reduced ground bounce in multi-driver systems.

Applications

Industrial CNC Positioning

Medical Infusion Pumps

Use Scenario: Open-loop positioning of X-Y stages in desktop CNC mills using NEMA 17 bipolar stepper motors.

IC Role / Device Role / Timing Role: Single-phase chopper driver providing constant-current excitation with quarter-step resolution for sub-0.01 mm repeatability.

Use Value: Eliminates external current-sense op-amps and discrete H-bridge transistors, reducing BOM cost by ~35% versus discrete solutions.

Use Scenario: Precise volumetric delivery control in portable IV pumps requiring silent, low-vibration motor operation.

IC Role / Device Role / Timing Role: Bipolar driver enabling half-step mode with dynamically adjustable current to minimize audible coil whine at low speeds.

Use Value: Analog VREF (pin 11) allows real-time current ramping during acceleration/deceleration, cutting acoustic noise by >15 dB(A) vs fixed-current drive.

Automated Laboratory Analyzers

3D Printer Extruder Motion

Use Scenario: Reagent carousel indexing in clinical chemistry analyzers where reliability over 10,000-hour MTBF is required.

IC Role / Device Role / Timing Role: High-voltage (up to 46 V) stepper driver operating in full-step mode with thermal foldback to sustain 24/7 duty cycle.

Use Value: Integrated thermal protection and 40 °C/W Rθ j-amb enable fanless enclosure design, meeting IEC 61010-1 safety requirements.

Use Scenario: Filament feed control in FDM 3D printers where rapid direction reversal and microstep smoothness impact print surface quality.

IC Role / Device Role / Timing Role: Dual-PBL3717A subsystem driving two-phase bipolar motor with synchronized PHASE and INPUT logic for coordinated commutation.

Use Value: Pin-compatible pairing reduces interconnect complexity vs dual-H-bridge ICs, cutting PCB layer count from 4 to 2 layers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bipolar stepper motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB6600HG	Higher 4.5 A rating, 2-phase integrated design, microstepping up to 32x; requires external heat sink above 2 A.	Targets larger NEMA 23/34 motors; lacks split-supply pins and analog VREF control.	Choose for higher torque systems needing plug-and-play microstepping, not for space-constrained 1 A designs with analog tuning needs.
LV8729V	2.5 A rating, integrated current DAC, SPI interface, 256-microstep; no external RC decay timing.	Designed for closed-loop servo-like performance with position feedback; higher BOM cost and firmware dependency.	Prefer when digital command interface and fine microstepping outweigh analog simplicity and cost sensitivity.

Compared with TB6600HG and LV8729V, the E-PBL3717A offers the lowest gate count, minimal external components (no clock, no SPI lines), and direct analog current scaling - making it optimal for cost-sensitive, thermally constrained, fixed-function stepper subsystems where 1 A and quarter-step resolution suffice.

Availability

E-PBL3717A is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pumps, automated laboratory analyzers, and 3D printer extruder motion requiring stable component supply and long-term obsolescence management.

Supply support for E-PBL3717A 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

The PBL3717A belongs to ST's legacy power driver IC family, engineered specifically for cost-effective, robust open-loop stepper motor control in industrial motion systems where integration, thermal resilience, and analog flexibility are prioritized over digital interfaces.

FAQ

What is the maximum allowable motor supply voltage for continuous operation?

The E-PBL3717A supports 10–46 V motor supply across pins 3 and 14, with absolute maximum rating of 50 V. For reliable continuous operation at 1 A, ST recommends limiting Vs to ≤42 V to maintain junction temperature below 150 °C when using the specified 20 cm² copper heatsink area and ambient ≤70 °C.

How do I configure quarter-step operation using the logic inputs?

Quarter-step requires external sequencing of INPUT0/INPUT1 and PHASE to insert intermediate current levels - e.g., alternating full-current AB with half-current A½B using analog VREF modulation or timed toggling of INPUT0/INPUT1 per step. The truth table on page 2 defines digital current states; quarter-step is achieved by inserting partial-current states between full/half steps.

Can the E-PBL3717A drive unipolar stepper motors?

No - the E-PBL3717A is designed exclusively for bipolar stepper motors with center-tapped windings. Its H-bridge topology requires bidirectional current flow through each phase; unipolar motors rely on single-direction switching per winding segment and are incompatible with this driver's output architecture and current-sense methodology.

What is the purpose of the four ground pins (4, 5, 12, 13) in the Powerdip package?

These pins provide parallel low-inductance return paths for both motor current (pins 4/5/12/13) and logic current (pin 4 primarily), while simultaneously conducting heat from the die to the PCB copper. Soldering all four to a shared 20 cm² copper pour reduces Rth j-amb from 40 °C/W to ~32 °C/W, enabling sustained 1 A operation without external heatsinking.

E-PBL3717A Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: -

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (2)

Interface:: Parallel

Technology:: Bipolar

Step Resolution:: 1, 1/2, 1/4

Applications:: General Purpose

Current - Output:: 1.2A

Voltage - Supply:: 4.75V ~ 5.25V

Voltage - Load:: 10V ~ 46V

Operating Temperature:: 0°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-PowerDIP

E-PBL3717A FAQ

1.How can I place an order for E-PBL3717A through Aetrix?

Please submit a Request for Quotation (RFQ) for E-PBL3717A 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 E-PBL3717A reliable?

The price and inventory of E-PBL3717A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-PBL3717A is usually 5 days.

3.What payment methods are accepted for E-PBL3717A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-PBL3717A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-PBL3717A?

E-PBL3717A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-PBL3717A 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 E-PBL3717A?

For technical support, including E-PBL3717A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-PBL3717A requirements.

6.How does Aetrix verify that E-PBL3717A is sourced from the original manufacturer or authorized distributors?

All E-PBL3717A 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 E-PBL3717A meets industry standards.

7.What is the process for return or replacement of E-PBL3717A?

All E-PBL3717A units undergo pre-shipment inspection (PSI). If there is an issue with E-PBL3717A, 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 E-PBL3717A part is unused and in its original packaging.

Return procedure for E-PBL3717A:

1.Submit a request within 90 days.

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

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