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Renesas ISL6721EVAL1
- Part No.:
- ISL6721EVAL1
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL6721EVAL1.pdf
- Description:
- EVAL BOARD FOR ISL6721
- Quantity:
- Payment:
- Shipping:
Inventory:1,455
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Product details
Overview
ISL6721EVAL1 from Renesas Electronics is a demonstration unit implementing a 48V-input dual-output flyback converter using the ISL6721 PWM controller, delivering 3.3V at 2.5A and 1.8V at 1.0A with cross-regulation. It features peak current mode control, adjustable 100kHz–1MHz switching frequency, bidirectional SYNC, and hiccup-mode overcurrent protection.
For engineers reviewing the ISL6721EVAL1 datasheet, ISL6721EVAL1 application, ISL6721EVAL1 setup, or ISL6721EVAL1 reference design, this evaluation board enables rapid validation of isolated DC/DC topologies including flyback and boost converters in telecom, industrial, and datacom power systems.
Technical Context
The ISL6721EVAL1 implements the ISL6721's flexible single-ended current mode PWM architecture with external RTCT timing network (11kΩ + 330pF), slope compensation via SLOPE pin, and dual-output regulation using weighted feedback summing. It validates the IC's 1A gate drive capability driving Q1 (MOSFET) under 36–75V input range.
This board demonstrates critical ISL6721 functions: soft-start clamping (SS pin), overcurrent shutdown with 295ms restart delay, UV/OV monitoring with user-defined thresholds, and thermal shutdown at 130°C - all verified per FN9110 Rev 9.00 test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 36VDC to 75VDC - supports telecom and industrial 48V distribution rails with margin. |
| Output Configuration | Dual isolated outputs: 3.3V/2.5A and 1.8V/1.0A - validated flyback topology with cross-regulation via weighted FB summing. |
| Controller Core | ISL6721 PWM IC - peak current mode, 100kHz–1MHz programmable frequency, 1% VREF accuracy, 1A gate driver. |
| Protection Features | Hiccup-mode OC shutdown (295ms delay), UV/OV fault detection, thermal shutdown (130°C), leading-edge blanking (100ns). |
| Soft-Start Control | External SS capacitor - controls ramp rate of duty cycle and sets OC shutdown threshold (0.125V discharge delta). |
| Synchronization | Bidirectional SYNC pin - enables multi-unit phase-locking or external clock injection without removing RTCT capacitor. |
Availability
ISL6721EVAL1 is available at Aetrix Electronics and suitable for telecom power, industrial DC/DC development, and datacom converter prototyping requiring stable component supply and validated reference designs.
Supply support for ISL6721EVAL1 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
Renesas Electronics is a global semiconductor leader delivering high-performance analog, power, and embedded solutions for industrial, automotive, and communications infrastructure.
The ISL6721EVAL1 belongs to Renesas' power management evaluation platform family, designed specifically to accelerate adoption of their flexible current-mode PWM controllers in isolated and non-isolated DC/DC applications.
FAQ
What is the primary function of the ISL6721EVAL1 evaluation board?
The ISL6721EVAL1 evaluation board implements a fully assembled 48V-input dual-output flyback converter using the ISL6721 PWM controller. It delivers 3.3V at 2.5A and 1.8V at 1.0A with cross-regulation, enabling engineers to validate performance, protection behavior, and layout practices before custom design. The ISL6721EVAL1 is not a standalone IC but a functional demonstration unit.
Does the ISL6721EVAL1 support adjustable switching frequency, and how is it configured?
Yes, the ISL6721EVAL1 supports adjustable switching frequency from 100kHz to 1MHz via the ISL6721's RTCT pin. On this board, frequency is set by an 11kΩ resistor and 330pF capacitor per the ISL6721 datasheet (FN9110 Rev 9.00, Figure 7). Users can modify these components to tune frequency without redesigning the PCB.
How does overcurrent protection operate on the ISL6721EVAL1?
The ISL6721EVAL1 implements hiccup-mode overcurrent protection using the ISL6721's ISET pin and soft-start capacitor discharge mechanism. When overcurrent is detected, the SS capacitor discharges at ~40µA; if voltage drops below 4.375V, GATE disables and remains off for ~295ms before automatic soft-start recovery. This behavior is confirmed in FN9110 Rev 9.00, pages 12–13.
Can the ISL6721EVAL1 be synchronized with other PWM controllers?
Yes, the ISL6721EVAL1 supports bidirectional synchronization via the ISL6721's SYNC pin. Multiple ISL6721EVAL1 units-or mixed ISL6721-based designs-can be phase-locked by connecting SYNC pins together, or locked to an external master clock ≥65% of free-running frequency. The RTCT capacitor remains required even in SYNC mode.
What input voltage range and output regulation method does the ISL6721EVAL1 use?
The ISL6721EVAL1 accepts 36VDC to 75VDC input and regulates two isolated outputs (3.3V/2.5A and 1.8V/1.0A) using weighted-sum feedback applied to the ISL6721's FB pin. Cross-regulation is achieved without secondary-side controllers, as documented in Figure 2 of FN9110 Rev 9.00.
ISL6721EVAL1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- -
- Voltage - Output:
- 10 W
- Current - Output:
- 1.8V, 3.3V
- Voltage - Input:
- -
- Regulator Topology:
- 48V
- Frequency - Switching:
- -
- Contents:
- -
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL6721
ISL6721EVAL1 FAQ
1.How can I place an order for ISL6721EVAL1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6721EVAL1 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 ISL6721EVAL1 reliable?
The price and inventory of ISL6721EVAL1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6721EVAL1 is usually 5 days.
3.What payment methods are accepted for ISL6721EVAL1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6721EVAL1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6721EVAL1?
ISL6721EVAL1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6721EVAL1 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 ISL6721EVAL1?
For technical support, including ISL6721EVAL1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6721EVAL1 requirements.
6.How does Aetrix verify that ISL6721EVAL1 is sourced from the original manufacturer or authorized distributors?
All ISL6721EVAL1 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 ISL6721EVAL1 meets industry standards.
7.What is the process for return or replacement of ISL6721EVAL1?
All ISL6721EVAL1 units undergo pre-shipment inspection (PSI). If there is an issue with ISL6721EVAL1, 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 ISL6721EVAL1 part is unused and in its original packaging.
Return procedure for ISL6721EVAL1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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