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STMicroelectronics STEVAL-ISA041V1
- Part No.:
- STEVAL-ISA041V1
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA041V1.pdf
- Description:
- EVAL BOARD FOR L6565 STP12IE95F4
- Quantity:
- Payment:
- Shipping:
Inventory:1,968
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Product details
Overview
STEVAL-ISA041V1 from STMicroelectronics is a 125 W quasi-resonant flyback demonstration board for notebook AC/DC adapters, built around the STP12IE95F4 ESBT switch, L6565 PWM controller, and STSR30 synchronous rectification driver. It delivers 19 V at 6.6 A, achieves >85% efficiency, supports 240–400 VDC input, and includes auto-restart short-circuit protection.
For engineers reviewing the STEVAL-ISA041V1 datasheet, STEVAL-ISA041V1 schematic, STEVAL-ISA041V1 application, or STEVAL-ISA041V1 equivalent, this board serves as a validated reference design for high-efficiency, cost-optimized flyback converters targeting PFC-fed notebook power supplies with synchronous rectification and constant-current ESBT gate drive.
Technical Context
The board implements a quasi-resonant flyback topology using the L6565 controller to minimize switching losses at light-to-moderate loads, with valley-switching detection enabling operation down to 55 kHz minimum frequency. The STP12IE95F4 ESBT provides integrated bipolar-MOS hybrid switching optimized for high-voltage, medium-power SMPS.
Synchronous rectification is managed by the STSR30 smart driver, which senses secondary-side voltage zero-crossing to precisely time MOSFET turn-on and reduce conduction loss. The 240–400 VDC input range is explicitly designed to interface with external PFC stages-though no PFC circuitry is included on the board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 125 W maximum continuous output, validated under thermal and load regulation constraints. |
| Output Voltage / Current | 19 V ±5% at up to 6.6 A, supporting standard notebook DC input requirements. |
| Input Voltage Range | 240–400 VDC, compatible with post-PFC bus voltages from ST's standalone PFC controllers. |
| Minimum Switching Frequency | 55 kHz, enabling valley-switching operation to reduce EMI and improve light-load efficiency. |
| Efficiency | >85% at full load, measured per EN60065 test conditions with specified layout and components. |
| Safety Compliance | Meets EN60065 requirements for audio/video equipment power supplies, including creepage/clearance and insulation testing. |
Availability
STEVAL-ISA041V1 is available at Aetrix Electronics and suitable for notebook adapter development, industrial SMPS prototyping, and PFC-integrated power supply validation requiring stable component supply and documented reference performance.
Supply support for STEVAL-ISA041V1 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 analog, MCU, power, and sensor solutions for industrial, automotive, and consumer applications.
This evaluation board belongs to ST's STEVAL (ST Evaluation) series, developed specifically to demonstrate high-efficiency, system-level power conversion architectures using ST's proprietary power devices and controllers.
FAQ
Is STEVAL-ISA041V1 still in active production?
No-STEVAL-ISA041V1 is marked obsolete per ST's official documentation (Doc ID 17405 Rev 1, April 2010). It remains available through authorized legacy distributors and Aetrix Electronics' extended-life inventory program for design continuity and repair support.
Does the board include PFC circuitry?
No. The STEVAL-ISA041V1 accepts 240–400 VDC input only and is intended for use downstream of an external PFC stage. Its schematic and documentation explicitly state that PFC is not implemented on the board but is supported via compatible ST PFC ICs like the L6562A or L4984D.
What is the role of the STSR30 on this board?
The STSR30 is a dedicated synchronous rectification driver that replaces the secondary-side Schottky diode. It senses transformer secondary voltage zero-crossing to drive an external MOSFET with precise timing, reducing conduction loss and improving overall efficiency beyond 85%.
Can this board be modified for different output voltages?
Yes-output voltage is set by the feedback divider network (R10/R11 in schematic) and TL431 reference. Adjusting these resistors recalibrates regulation; however, transformer turns ratio, rectifier MOSFET ratings, and output capacitor voltage rating must also be verified for new target voltages.
STEVAL-ISA041V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- VIPER™
- Packaging:
- Box
- Product Status:
- Obsolete
- Main Purpose:
- AC/DC, Primary Side
- Outputs and Type:
- 1 Isolated Output
- Voltage - Output:
- 125 W
- Current - Output:
- 19V
- Voltage - Input:
- 6.6A
- Regulator Topology:
- 240V ~ 400V
- Frequency - Switching:
- Flyback
- Contents:
- 55kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L6565, STP12IE95F4
STEVAL-ISA041V1 FAQ
1.How can I place an order for STEVAL-ISA041V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA041V1 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-ISA041V1 reliable?
The price and inventory of STEVAL-ISA041V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA041V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA041V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA041V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA041V1?
STEVAL-ISA041V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA041V1 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-ISA041V1?
For technical support, including STEVAL-ISA041V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA041V1 requirements.
6.How does Aetrix verify that STEVAL-ISA041V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA041V1 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-ISA041V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA041V1?
All STEVAL-ISA041V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA041V1, 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-ISA041V1 part is unused and in its original packaging.
Return procedure for STEVAL-ISA041V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA041V1 Tags
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DFR0571
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2465
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DC2468A
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