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STMicroelectronics STEVAL-ISA100V1
- Part No.:
- STEVAL-ISA100V1
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA100V1.pdf
- Description:
- EVAL BOARD FOR L7986A
- Quantity:
- Payment:
- Shipping:
Inventory:2,110
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Product details
Overview
STEVAL-ISA100V1 from STMicroelectronics is a step-down switching demonstration board based on the L7986A synchronous buck regulator in HSOP8 package, delivering up to 3 A DC output current with 4.5 V–38 V input range and adjustable 0.6 V–VIN output voltage. It operates at 250 kHz (programmable up to 1 MHz), supports 100% duty cycle low-dropout operation, and includes internal soft-start, enable, overcurrent and thermal protection.
For engineers reviewing the STEVAL-ISA100V1 datasheet, STEVAL-ISA100V1 pinout, STEVAL-ISA100V1 application, or STEVAL-ISA100V1 equivalent, this board enables rapid evaluation of high-voltage industrial power supply designs requiring wide-input-range, adjustable-output, and robust protection features in compact form factor.
Technical Context
The board implements a non-isolated synchronous buck topology using the L7986A controller IC, which integrates a 3.7 A current-limited power MOSFET and voltage feed-forward control for improved transient response across wide VIN ranges. Its programmable oscillator allows frequency tuning from 250 kHz to 1 MHz to balance efficiency, EMI, and component size.
Designed for zero-load operation and 100% duty-cycle capability, the board supports ultra-low dropout regulation under high-VIN/low-VOUT conditions. Protection features include cycle-by-cycle overcurrent detection and thermal shutdown with automatic recovery, verified per ST's characterization data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 3 A DC continuous - sufficient for powering FPGA I/O banks or industrial microcontrollers. |
| Input Voltage Range | 4.5 V to 38 V - supports 12 V/24 V/36 V industrial rails and automotive battery transients. |
| Output Voltage Range | Adjustable from 0.6 V to VIN - enables generation of core voltages (e.g., 1.2 V, 1.8 V, 3.3 V) or bias supplies. |
| Switching Frequency | 250 kHz base, programmable up to 1 MHz - allows optimization for low EMI (lower freq) or small magnetics (higher freq). |
| Duty Cycle Capability | 100% - maintains regulation even when VOUT approaches VIN, critical for brownout resilience. |
| Protection Features | Internal cycle-by-cycle overcurrent + thermal shutdown with auto-recovery - eliminates need for external fault-handling circuitry. |
Availability
STEVAL-ISA100V1 is available at Aetrix Electronics and suitable for industrial PLC power modules, factory automation sensor nodes, and ruggedized embedded computing systems requiring stable component supply and validated reference design support.
Supply support for STEVAL-ISA100V1 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 sensing solutions for industrial, automotive, and consumer applications.
The STEVAL-ISA100V1 belongs to ST's STEVAL evaluation board series, engineered to accelerate prototyping and validation of high-voltage DC-DC converters targeting harsh-environment industrial power systems.
FAQ
What input voltage range does the STEVAL-ISA100V1 support?
The board accepts 4.5 V to 38 V DC input, validated across this full range per ST's Doc ID 023084 Rev 1. This accommodates nominal 12 V and 24 V industrial supplies, plus extended transients such as automotive load-dump events up to 38 V, without external clamping.
Can the output voltage be set below 1 V?
Yes - the output is adjustable down to 0.6 V using the onboard resistor divider network, enabling direct powering of low-voltage cores like ARM Cortex-M7 or DDR3L memory termination supplies without additional post-regulation.
Does the board support synchronization to an external clock?
No - the L7986A uses an internal oscillator with external resistor programming (RT pin); it lacks an external sync input. Frequency adjustment is limited to setting via RT resistor, with no provision for master-clock locking or phase alignment.
Is thermal performance characterized in free-air conditions?
Yes - ST's data brief specifies 3 A output capability under natural convection at 25 °C ambient, with thermal shutdown activating above 150 °C junction temperature. The HSOP8 layout and copper pour are optimized per ST's recommended PCB footprint in the schematic.
STEVAL-ISA100V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- -
- Voltage - Input:
- 3A
- Regulator Topology:
- 4.5V ~ 38V
- Frequency - Switching:
- Buck
- Contents:
- 250kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L7986A
STEVAL-ISA100V1 FAQ
1.How can I place an order for STEVAL-ISA100V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA100V1 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-ISA100V1 reliable?
The price and inventory of STEVAL-ISA100V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA100V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA100V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA100V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA100V1?
STEVAL-ISA100V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA100V1 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-ISA100V1?
For technical support, including STEVAL-ISA100V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA100V1 requirements.
6.How does Aetrix verify that STEVAL-ISA100V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA100V1 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-ISA100V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA100V1?
All STEVAL-ISA100V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA100V1, 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-ISA100V1 part is unused and in its original packaging.
Return procedure for STEVAL-ISA100V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA100V1 Tags
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