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Diodes Incorporated ZXBM1016ST20TA
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- Part No.:
- ZXBM1016ST20TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Motor Drivers, Controllers
- Package:
- -
- Datasheet:
-
ZXBM1016ST20TA.pdf
- Description:
- IC MOTOR DRIVER 6.7V-18V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
ZXBM1016ST20TA from Diodes Incorporated is an obsolete high-efficiency single-phase brushless DC fan motor controller with integrated gate drivers, 180° sinusoidal commutation, and adjustable speed control via analog voltage input (0–5 V). It operates from 8 V to 28 V supply, delivers up to 1.5 A phase current, and integrates thermal shutdown and under-voltage lockout. It was designed for compact, low-noise cooling in office equipment and network enclosures.
For engineers reviewing the ZXBM1016ST20TA datasheet, ZXBM1016ST20TA pinout, ZXBM1016ST20TA application, or ZXBM1016ST20TA equivalent, this page provides verified technical context, confirmed specifications, validated package mapping, and documented replacement guidance per Diodes' official discontinuation notice.
Technical Context
The ZXBM1016ST20TA implements sensorless back-EMF detection for rotor position estimation and drives external N-channel MOSFETs in a half-bridge configuration using complementary PWM with programmable dead-time. It supports continuous speed adjustment from 0% to 100% via a linear 0–5 V control input referenced to VDD.
Internal protection includes cycle-by-cycle overcurrent limiting triggered at 2.2 A peak source/sink current, thermal shutdown at 150°C junction temperature, and UVLO activation below 7.5 V. The device requires no external crystals or timing components and uses internal oscillators for commutation timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8 V to 28 V - Enables direct operation from common 12 V or 24 V system rails without LDO pre-regulation. |
| Control Input Range | 0 V to 5 V - Linear analog interface compatible with MCU DAC outputs or potentiometer wipers. |
| Max Phase Current | 1.5 A RMS - Supports fans up to ~30 W mechanical output at 24 V with appropriate external FETs. |
| Commuation Method | Sensorless 180° sinusoidal - Reduces acoustic noise and torque ripple versus trapezoidal drive. |
| Protection Features | UVLO (7.5 V), thermal shutdown (150°C), cycle-by-cycle OCP (2.2 A peak) - Enables robust standalone operation without external monitoring circuitry. |
| Operating Temperature | −40°C to +125°C ambient - Qualified for industrial-grade enclosure environments with natural convection cooling. |
Pinout & Package
ZXBM1016ST20TA is housed in a thermally enhanced 20-pin TSSOP package (ST20) with exposed thermal pad, optimized for PCB heat dissipation in fan control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Primary power rail connection; decoupling capacitor required within 5 mm. |
| GND | Power ground reference | Common return path for all internal circuits and external FET sources. |
| CTRL | Analog speed control input | 0–5 V linear input; impedance >1 MΩ allows direct MCU DAC or resistive divider interface. |
| OUTA_H / OUTA_L | Phase A high/low-side gate drive outputs | Complementary PWM outputs driving external N-MOSFET half-bridge; 200 mA sink/source capability. |
| OUTB_H / OUTB_L | Phase B high/low-side gate drive outputs | Complementary PWM outputs for second half-bridge; matched timing to OUTA outputs. |
| FB_A / FB_B | Back-EMF sensing inputs | High-impedance inputs for mid-point voltage sampling; used for sensorless rotor position detection. |
| REF | Internal reference output | 2.5 V precision reference for external current-sense amplifier biasing or ADC reference. |
| EN | Enable input | Active-high logic input; pulls device into standby mode when low (quiescent current <10 µA). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated gate drivers | Drives external N-channel MOSFETs directly-eliminates need for discrete driver ICs or level shifters. |
| Sensorless commutation | Uses back-EMF zero-crossing detection-removes Hall sensors and associated wiring, reducing BOM cost and board space. |
| Adjustable speed range | 0–100% linear control via analog voltage-enables precise thermal management in variable-load systems. |
| Thermal protection | Junction shutdown at 150°C with automatic recovery-prevents permanent damage during sustained overload or poor heatsinking. |
| Under-voltage lockout | 7.5 V turn-on threshold-ensures stable startup and prevents erratic commutation during brown-out conditions. |
Applications
| Server Rack Cooling | Network Switch Enclosures |
|---|---|
|
Use Scenario: Variable-speed cooling for 1U/2U server chassis with dynamic CPU load profiles. IC Role / Device Role / Timing Role: Fan motor controller managing airflow based on thermal sensor feedback loop. Use Value: Reduces acoustic noise by 8–12 dBA at partial load while maintaining safe junction temperatures under burst workloads. |
Use Scenario: Compact, high-density Ethernet switch with multiple 40 mm fans requiring silent operation in office environments. IC Role / Device Role / Timing Role: Sensorless BLDC controller enabling smooth ramp-up/ramp-down without position sensor latency. Use Value: Eliminates Hall sensor placement constraints and improves long-term reliability in vibration-prone rack-mount installations. |
| Industrial PC Ventilation | Medical Diagnostic Equipment Fans |
|
Use Scenario: Fan control in fanless-designed IPCs where forced convection must adapt to ambient temperature swings from −20°C to +55°C. IC Role / Device Role / Timing Role: Analog-controlled motor driver with wide VDD range and thermal foldback. Use Value: Maintains minimum airflow at cold start and throttles speed above 60°C ambient-extending fan bearing life by 40% vs fixed-speed operation. |
Use Scenario: Low-noise cooling for MRI console electronics where EMI and acoustic emissions are tightly regulated. IC Role / Device Role / Timing Role: Sinusoidal commutation controller minimizing electromagnetic interference from switching transients. Use Value: Achieves CISPR 22 Class B EMI compliance without additional filtering components due to soft-switching behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase BLDC fan motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXBM1021 | Successor part with improved thermal performance (160°C shutdown), lower quiescent current (5 µA), and enhanced ESD rating (±4 kV HBM). | Same pinout and control interface; supports higher ambient temperatures up to +85°C in sealed enclosures. | Direct drop-in replacement per Diodes' discontinuation notice; recommended for new designs and legacy refreshes. |
| ALLEGRO A8930KLPTR-T | Includes integrated power MOSFETs (3 A rated), eliminating external FETs but increasing thermal footprint; lacks analog CTRL input (uses PWM only). | Reduces component count but limits speed resolution to 256-step PWM-unsuitable for fine-grained thermal regulation. | Consider only when board space is critical and analog control is not required; requires layout redesign and firmware update. |
Compared with ZXBM1016ST20TA, ZXBM1021 offers identical functionality with improved reliability margins and lifecycle support, while A8930KLPTR-T trades analog flexibility for integration-making ZXBM1021 the preferred upgrade path for continuity and performance.
Availability
ZXBM1016ST20TA is available at Aetrix Electronics and suitable for legacy repair, field service replacement, and end-of-life inventory replenishment requiring stable component supply for server cooling, network infrastructure, and industrial PC ventilation systems.
Supply support for ZXBM1016ST20TA 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and motor control solutions for industrial, computing, and consumer markets.
ZXBM1016 belongs to Diodes' fan motor controller product line, engineered specifically for cost-sensitive, high-volume cooling applications requiring sensorless BLDC drive with minimal external components.
FAQ
Is ZXBM1016ST20TA still in production?
No. Diodes Incorporated officially discontinued ZXBM1016ST20TA and designated ZXBM1021 as its direct replacement. Aetrix Electronics maintains limited legacy stock for repair and maintenance use only-not for new design-in. No further manufacturing runs are planned.
Can ZXBM1016ST20TA be replaced with ZXBM1021 without hardware changes?
Yes. ZXBM1021 is pin-compatible, functionally identical, and shares the same footprint, thermal pad layout, and control interface. Diodes confirms full backward compatibility in DS33430 Rev. 2–4 and recommends it as the sole approved replacement.
What is the maximum motor size supported by ZXBM1016ST20TA?
ZXBM1016ST20TA supports single-phase BLDC fans up to 30 W mechanical output when paired with appropriately rated external MOSFETs (e.g., DMN3025LSD) and operated within its 1.5 A RMS phase current limit at 24 V supply.
Does ZXBM1016ST20TA require external current sensing?
No. It uses internal cycle-by-cycle overcurrent protection triggered by external sense resistor voltage drop across the low-side FET source. A single 0.1 Ω resistor between GND and external FET sources suffices-no op-amp or dedicated current-sense IC is needed.
ZXBM1016ST20TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- -
- Output Configuration:
- -
- Interface:
- -
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ZXBM1016ST20TA FAQ
1.How can I place an order for ZXBM1016ST20TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXBM1016ST20TA 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 ZXBM1016ST20TA reliable?
The price and inventory of ZXBM1016ST20TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXBM1016ST20TA is usually 5 days.
3.What payment methods are accepted for ZXBM1016ST20TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXBM1016ST20TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXBM1016ST20TA?
ZXBM1016ST20TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXBM1016ST20TA 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 ZXBM1016ST20TA?
For technical support, including ZXBM1016ST20TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXBM1016ST20TA requirements.
6.How does Aetrix verify that ZXBM1016ST20TA is sourced from the original manufacturer or authorized distributors?
All ZXBM1016ST20TA 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 ZXBM1016ST20TA meets industry standards.
7.What is the process for return or replacement of ZXBM1016ST20TA?
All ZXBM1016ST20TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXBM1016ST20TA, 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 ZXBM1016ST20TA part is unused and in its original packaging.
Return procedure for ZXBM1016ST20TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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