My Inquiry
My Account
STMicroelectronics STEVAL-ISA057V1
- Part No.:
- STEVAL-ISA057V1
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA057V1.pdf
- Description:
- EVAL BOARD L6565 STC03DE220HV
- Quantity:
- Payment:
- Shipping:
Inventory:1,952
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STEVAL-ISA057V1 from STMicroelectronics is a 15 W flyback switch-mode power supply evaluation board designed for metering applications, featuring the L6565 quasi-resonant PWM controller and STC03DE220HV ESBT™ power switch. It operates across an ultra-wide DC input range (125–1250 V), delivers 5 V/3.0 A output, and meets EN60950 safety requirements.
For engineers reviewing the STEVAL-ISA057V1 datasheet, STEVAL-ISA057V1 pinout, STEVAL-ISA057V1 application, or STEVAL-ISA057V1 equivalent, this board provides validated reference design implementation for high-input-voltage, non-isolated SMPS in utility metering, smart grid sensors, and industrial DC-powered instrumentation where galvanic isolation is not required.
Technical Context
The board implements a current-mode-controlled, quasi-resonant flyback converter using the L6565 IC, enabling zero-voltage switching (ZVS) or valley-switching turn-off to reduce switching losses. The STC03DE220HV ESBT™ integrates a high-voltage BJT and low-voltage MOSFET in cascade, optimized for high-voltage primary-side switching with reduced EMI and simplified gate drive.
Input voltage tolerance spans 125 VDC to 1250 VDC - suitable for direct connection to rectified AC mains or HV DC bus lines in metering infrastructure. Output regulation is achieved via optocoupler feedback with primary-side sensing, and short-circuit protection uses auto-restart behavior without latch-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 125–1250 VDC: Enables direct use with rectified 100–870 VAC line inputs common in global smart meter deployments. |
| Output Voltage / Current | 5 V / 3.0 A: Supplies logic-level power for microcontrollers, RTCs, and metrology ICs in single-board metering modules. |
| Max Output Power | 15 W: Supports full-feature operation of Class 0.2/0.5 electricity meters including communication interfaces (RS-485, PLC, RF). |
| Switching Frequency | ≥30 kHz minimum: Ensures audible noise suppression while maintaining efficiency across wide input range. |
| Efficiency | >60% overall: Achieved despite non-isolated topology and ultra-wide input, critical for thermal management in sealed meter enclosures. |
| Safety Compliance | EN60950 certified: Validates creepage/clearance and insulation integrity for end-equipment certification in industrial and utility environments. |
| PCB Format | FR4 double-sided, 58 × 120 mm: Compact form factor fits within standard DIN-rail or compact meter housing constraints. |
Availability
STEVAL-ISA057V1 is available at Aetrix Electronics and suitable for smart electricity metering, industrial DC-powered sensor nodes, and utility-grade energy monitoring systems requiring stable component supply and pre-validated power architecture.
Supply support for STEVAL-ISA057V1 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, Switzerland, specializing in microcontrollers, power devices, analog ICs, and embedded solutions for industrial, automotive, and consumer markets.
This board belongs to ST's STEVAL (ST Evaluation) series - purpose-built reference designs that accelerate development of certified, production-ready subsystems for metering, power conversion, and sensing applications.
FAQ
Is STEVAL-ISA057V1 galvanically isolated?
No. The design uses a non-isolated flyback configuration with shared ground between input and output. It is intended for metering applications where isolation is not mandated by system architecture - such as DC-fed utility meters or auxiliary supplies referenced to the high-voltage side.
What is the role of the STC03DE220HV ESBT™ on this board?
The STC03DE220HV serves as the primary high-voltage switching element in the flyback transformer primary circuit. Its integrated BJT-MOSFET cascade enables robust 1250 V blocking capability with low conduction loss and simplified gate drive versus discrete HV solutions.
Can STEVAL-ISA057V1 be used with AC input directly?
No. It requires a pre-rectified DC input. The board accepts 125–1250 VDC only - meaning it must be fed from a bridge rectifier stage connected to AC mains or other HV DC sources. No onboard rectification is provided.
Does this board include output overvoltage protection?
Per the data brief, only short-circuit protection with auto-restart is specified. There is no explicit mention of output overvoltage protection circuitry - designers must verify external supervision or rely on downstream LDOs/regulators for rail integrity in final systems.
STEVAL-ISA057V1 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:
- 5V
- Voltage - Input:
- 3A
- Regulator Topology:
- 125V ~ 1250V
- Frequency - Switching:
- Buck
- Contents:
- 30kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L6565, STC03DE220HV
STEVAL-ISA057V1 FAQ
1.How can I place an order for STEVAL-ISA057V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA057V1 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-ISA057V1 reliable?
The price and inventory of STEVAL-ISA057V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA057V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA057V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA057V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA057V1?
STEVAL-ISA057V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA057V1 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-ISA057V1?
For technical support, including STEVAL-ISA057V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA057V1 requirements.
6.How does Aetrix verify that STEVAL-ISA057V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA057V1 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-ISA057V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA057V1?
All STEVAL-ISA057V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA057V1, 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-ISA057V1 part is unused and in its original packaging.
Return procedure for STEVAL-ISA057V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA057V1 Tags
-
DFR0571
DFRobot
-
DFR0379
DFRobot
-
DFR0205
DFRobot
-
1385
Adafruit Industries LLC
-
COM-15208
SparkFun Electronics
-
1944
Adafruit Industries LLC
-
2465
Adafruit Industries LLC
-
DC2468A
Analog Devices Inc.
-
DC2841A
Analog Devices Inc.
-
TPS552892EVM-111
Texas Instruments
-
TPS55289EVM-093
Texas Instruments
-
EPC9158
EPC
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
