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STMicroelectronics STEVAL-ISA211V1
- Part No.:
- STEVAL-ISA211V1
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA211V1.pdf
- Description:
- EVAL BOARD L6566BH STW12N170K5
- Quantity:
- Payment:
- Shipping:
Inventory:3,484
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Product details
Overview
STEVAL-ISA211V1 from STMicroelectronics is an industrial-grade 24 V/100 W flyback evaluation board based on the L6566BH multi-mode controller and STW12N170K5 1700 V MDmesh K5 MOSFET, featuring reinforced isolation, ultra-wide input range (230–690 VAC / 250–1000 VDC), selectable fixed-frequency or quasi-resonant operation, and embedded 1 kV high-voltage startup for auxiliary power in photovoltaic and industrial systems.
For engineers reviewing the STEVAL-ISA211V1 datasheet, STEVAL-ISA211V1 pinout, STEVAL-ISA211V1 application, or STEVAL-ISA211V1 equivalent, key selection considerations include its 100 W isolated output, 1700 V MOSFET rating, L6566BH-based multi-mode control, brownout protection option, and compatibility with ultra-high DC bus voltages up to 1000 VDC in harsh industrial environments.
Technical Context
The board implements a one-switch flyback topology with reinforced isolation and uses the L6566BH controller to enable dual-mode operation-fixed-frequency (via R25 = 39 kΩ) or quasi-resonant (via R26 = 0 Ω and R25 = 16 kΩ). Startup is achieved via an embedded 840 V HV circuit boosted to 1 kV using the STD1NK60T4 MOSFET.
It supports short-time undervoltage operation down to 150 VDC (or 180 VAC) at reduced 50 W output, includes modified soft-start and optional brownout protection, and integrates TL431-based voltage regulation with optocoupler feedback for precise 24 V ±5% output stability under variable load and line conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 100 W continuous; derates to 50 W during short-term low-input operation (≥150 VDC) |
| Input Voltage Range | 230–690 VAC or 250–1000 VDC - enables direct connection to medium-voltage AC grids and PV string outputs |
| Output Voltage | 24 V ±5% - regulated via TL431 + optocoupler feedback loop with reinforced isolation barrier |
| Topology | One-switch flyback - simplified design with single primary-side switch (STW12N170K5) and transformer-coupled isolation |
| Control IC | L6566BH - multi-mode controller supporting fixed-frequency and quasi-resonant modes with integrated 840 V startup |
| Primary Switch | STW12N170K5 - 1700 V, 2.3 Ω typ., 5 A MDmesh K5 MOSFET rated for ultra-high DC bus stress |
| Startup Voltage | 1 kV - achieved by boosting internal 840 V HV starter with external STD1NK60T4, enabling reliable start at >900 VDC |
Availability
STEVAL-ISA211V1 is available at Aetrix Electronics and suitable for industrial auxiliary power supplies, photovoltaic string monitoring units, medium-voltage motor drives, and grid-tied energy storage interfaces requiring stable component supply and long-term design-in support.
Supply support for STEVAL-ISA211V1 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, designing and manufacturing microcontrollers, power devices, analog ICs, and silicon solutions for industrial, automotive, and consumer applications.
The STEVAL-ISA211V1 belongs to ST's power conversion evaluation platform series, developed specifically to accelerate design of ultra-wide-input, high-isolation auxiliary supplies for industrial automation and renewable energy systems.
FAQ
What input voltage ranges does the STEVAL-ISA211V1 support?
The STEVAL-ISA211V1 supports 230–690 VAC and 250–1000 VDC nominal input ranges. It can operate down to 180 VAC or 150 VDC for short durations at reduced 50 W output, enabled by its L6566BH controller's adaptive undervoltage handling and robust STW12N170K5 switching element.
How is quasi-resonant mode configured on this board?
Quasi-resonant mode is selected by shorting resistor R26 (0 Ω) and changing R25 from 39 kΩ to 16 kΩ; fixed-frequency mode uses R25 = 39 kΩ and leaves R26 unpopulated. This configuration leverages the L6566BH's ZCD pin and valley-switching logic without hardware modification beyond resistor changes.
Does the board provide reinforced isolation and safety certification?
Yes - the STEVAL-ISA211V1 features reinforced isolation per IEC 60747-5-2, validated by its transformer construction, creepage/clearance layout (>8 mm primary-to-secondary), and use of certified optocoupler (PC817 or equivalent) and TL431 feedback. It meets requirements for industrial auxiliary supplies but is not pre-certified to UL/EN 62368-1 as a standalone product.
Can the output voltage be adjusted, and what is its regulation accuracy?
The output is factory-set to 24 V ±5% using a precision TL431 shunt regulator and resistive divider (R23/R38). Regulation accuracy is maintained across line (230–690 VAC) and load (10–100% full load) variations due to optocoupler-coupled feedback and L6566BH's tight VREF tolerance (±1%). No onboard trimmer is provided.
STEVAL-ISA211V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Main Purpose:
- AC/DC, Primary Side
- Outputs and Type:
- 1 Isolated Output
- Voltage - Output:
- 100 W
- Current - Output:
- -
- Voltage - Input:
- -
- Regulator Topology:
- 230 ~ 690 VAC, 250V ~ 1000V
- Frequency - Switching:
- Flyback
- Contents:
- -
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L6566BH, STW12N170K5
STEVAL-ISA211V1 FAQ
1.How can I place an order for STEVAL-ISA211V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA211V1 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 STEVAL-ISA211V1 reliable?
The price and inventory of STEVAL-ISA211V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA211V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA211V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA211V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA211V1?
STEVAL-ISA211V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA211V1 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 STEVAL-ISA211V1?
For technical support, including STEVAL-ISA211V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA211V1 requirements.
6.How does Aetrix verify that STEVAL-ISA211V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA211V1 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 STEVAL-ISA211V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA211V1?
All STEVAL-ISA211V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA211V1, 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 STEVAL-ISA211V1 part is unused and in its original packaging.
Return procedure for STEVAL-ISA211V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA211V1 Tags
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DFR0571
DFRobot
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DFR0379
DFRobot
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DFR0205
DFRobot
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1385
Adafruit Industries LLC
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COM-15208
SparkFun Electronics
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1944
Adafruit Industries LLC
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2465
Adafruit Industries LLC
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DC2468A
Analog Devices Inc.
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DC2841A
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TPS552892EVM-111
Texas Instruments
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TPS55289EVM-093
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EPC9158
EPC
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