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STMicroelectronics STEVAL-ISA039V1
- Part No.:
- STEVAL-ISA039V1
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA039V1.pdf
- Description:
- EVAL BOARD FOR L6727
- Quantity:
- Payment:
- Shipping:
Inventory:2,914
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Product details
Overview
STEVAL-ISA039V1 from STMicroelectronics is an evaluation board for the L6727 synchronous buck controller, designed to demonstrate a 5A, 1.25V step-down DC/DC converter operating from 5–12V input at 300 kHz switching frequency in low-current embedded power applications.
For engineers reviewing the STEVAL-ISA039V1 datasheet, STEVAL-ISA039V1 pinout, STEVAL-ISA039V1 application, or STEVAL-ISA039V1 equivalent, this board enables rapid validation of L6727-based 1.25V POL regulators with integrated NMOS drivers, fixed-frequency PWM control, and overcurrent/thermal protection in two-layer PCB layouts.
Technical Context
The board implements a complete non-isolated synchronous buck topology using the L6727 controller IC, which integrates a 0.8V reference, PWM logic, bootstrap gate drivers for high-side and low-side NMOS FETs (STD55NH2LL and STD90NH2LL), and cycle-by-cycle current limiting.
It supports adjustable output voltage via FB resistor divider (default 1.25V), delivers up to 5A continuous load current, and operates at a fixed 300 kHz switching frequency with external compensation network (COMP pin) and phase node routing optimized for minimal EMI on a two-layer PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 12V DC - supports standard industrial and embedded bus rails |
| Output Voltage | Fixed 1.25V (adjustable via FB resistor divider) - targets core voltage for low-power microcontrollers and FPGAs |
| Max Output Current | 5A continuous - validated with thermal design using discrete NMOS switches and 2200µF bulk output capacitance |
| Switching Frequency | 300 kHz - balances efficiency, size, and EMI for compact board-level power delivery |
| Controller IC | L6727 in SO-8 package - integrates 0.8V reference, dual NMOS gate drivers, and fault protection logic |
| PCB Layers | 2-layer - demonstrates cost-effective layout with dedicated power planes and thermal relief for high-current paths |
Availability
STEVAL-ISA039V1 is available at Aetrix Electronics and suitable for embedded power validation, FPGA core voltage prototyping, and industrial DC/DC regulator reference design requiring stable component supply and documented STMicroelectronics evaluation hardware.
Supply support for STEVAL-ISA039V1 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 markets.
This board belongs to ST's STEVAL evaluation platform family, developed to accelerate adoption of its power management ICs through fully tested, documented, and application-specific reference designs.
FAQ
Is STEVAL-ISA039V1 still in production?
No - STEVAL-ISA039V1 is marked as Obsolete by STMicroelectronics per its July 2007 data brief. It remains available through authorized legacy distributors and Aetrix Electronics' extended-life inventory program for design continuity and repair support.
Can the output voltage be adjusted above 1.25V?
Yes - the FB pin connects to a resistor divider (R7/R9 defaulting to 33kΩ/2.2kΩ). Replacing R7 or R9 changes the feedback ratio; output voltage = 0.8V × (1 + R7/R9), enabling adjustment across typical core voltage ranges (e.g., 1.8V, 2.5V, 3.3V).
What MOSFETs are used on the board?
The board uses STD55NH2LL (N-channel, 55V, 50A, TO-220) for the low-side switch (LSG1) and STD90NH2LL (N-channel, 90V, 80A, TO-220) for the high-side switch (HSG), both driven directly by the L6727's integrated gate drivers.
Does the board include thermal protection?
Yes - the L6727 IC provides internal thermal shutdown. The board layout includes thermal vias under the MOSFETs and controller, and the data brief confirms operation with overtemperature protection active during sustained 5A loads at ambient temperatures up to 60°C.
STEVAL-ISA039V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1.25V
- Voltage - Input:
- 5A
- Regulator Topology:
- 5V ~ 12V
- Frequency - Switching:
- Buck
- Contents:
- 300kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L6727
STEVAL-ISA039V1 FAQ
1.How can I place an order for STEVAL-ISA039V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA039V1 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-ISA039V1 reliable?
The price and inventory of STEVAL-ISA039V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA039V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA039V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA039V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA039V1?
STEVAL-ISA039V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA039V1 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-ISA039V1?
For technical support, including STEVAL-ISA039V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA039V1 requirements.
6.How does Aetrix verify that STEVAL-ISA039V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA039V1 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-ISA039V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA039V1?
All STEVAL-ISA039V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA039V1, 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-ISA039V1 part is unused and in its original packaging.
Return procedure for STEVAL-ISA039V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA039V1 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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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
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TPS55289EVM-093
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EPC9158
EPC
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