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Renesas ISL91127IRA-EVZ
- Part No.:
- ISL91127IRA-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91127IRA-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91127IR
- Quantity:
- Payment:
- Shipping:
Inventory:2,757
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Product details
Overview
ISL91127IRA-EVZ from Renesas Electronics is an evaluation board designed to demonstrate the ISL91127IRAZ adjustable-output buck-boost switching regulator. It supports input voltages from 1.8V to 5.5V, delivers up to 2A output current at 3.3V, features resistor-programmable output voltage (2V–5V), operates at 2.5MHz switching frequency, and functions across –40°C to +85°C ambient temperature - enabling rapid validation in portable battery-powered systems.
For engineers reviewing the ISL91127IRA-EVZ datasheet, ISL91127IRA-EVZ pinout, ISL91127IRA-EVZ application, or ISL91127IRA-EVZ equivalent, this board provides hands-on access to jumper-selectable EN/Mode control, test points for VOUT/LX1/LX2/EN, and a validated layout optimized for low-noise buck-boost performance with new battery chemistries.
Technical Context
The ISL91127IRA-EVZ implements a dedicated hardware platform for the ISL91127IRAZ IC, which uses Intersil's proprietary buck-boost algorithm to maintain regulation when input voltage approaches output voltage. It integrates a 4mm×4mm QFN-packaged controller, dual LX outputs, and external compensation components tuned for stability across the full 2V–5V output range.
Board-level features include jumper-controlled enable (J3) and mode selection (auto-PFM/forced-PWM via J4), multi-pin high-current connectors (J1/J2), and six accessible test points for real-time probing of key signals - all supporting functional verification without custom PCB design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Target Device | ISL91127IRAZ adjustable-output buck-boost regulator (QFN-24, 4mm×4mm) |
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/NiMH sources |
| Output Voltage Range | 2.0V to 5.0V - set via R2 resistor per Table 1; default 3.3V with 60.4kΩ (1% tolerance) |
| Max Output Current | 2A continuous - verified at PVIN = 2.5V, VOUT = 3.3V, with Toko DFE322512C inductor |
| Switching Frequency | 2.5MHz - enables compact external passive component selection and reduces EMI filtering burden |
| Operating Temperature | –40°C to +85°C ambient - validated for industrial and portable consumer environments |
Availability
ISL91127IRA-EVZ is available at Aetrix Electronics and suitable for battery-powered handheld devices, USB-C power delivery adapters, and IoT edge nodes requiring stable component supply during prototyping and pre-production validation.
Supply support for ISL91127IRA-EVZ 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 Corporation is a global semiconductor manufacturer delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.
The ISL91127IRA-EVZ belongs to Renesas' legacy Intersil evaluation board portfolio, developed specifically to accelerate adoption of high-efficiency buck-boost regulators for next-generation battery-powered systems.
FAQ
What is the primary function of the ISL91127IRA-EVZ?
The ISL91127IRA-EVZ is an evaluation board for the ISL91127IRAZ buck-boost regulator IC. Its purpose is to provide a ready-to-use platform for engineers to validate performance, measure efficiency, probe waveforms, and configure output voltage using external resistors - eliminating the need for custom PCB development during early-stage design.
How do I set a custom output voltage on the ISL91127IRA-EVZ?
To set a custom output voltage on the ISL91127IRA-EVZ, replace resistor R2 with the value specified in Table 1 of UG080 Rev 2.00 - for example, 46.4kΩ for 4.0V output. R2 must be a 1% tolerance resistor; the board's feedback network is calibrated for precise adjustment across the 2.0V–5.0V range.
What are the key jumpers on the ISL91127IRA-EVZ and their functions?
The ISL91127IRA-EVZ includes two critical jumpers: J3 controls EN (shorting EN to VIN enables the regulator), and J4 controls MODE (shorting MODE to VIN selects forced-PWM operation; open defaults to auto-PFM). These allow immediate configuration of startup behavior and light-load efficiency mode without soldering or firmware.
Can the ISL91127IRA-EVZ be used to evaluate the fixed-output ISL91127IRNZ?
No - the ISL91127IRA-EVZ is specifically designed for the adjustable-output ISL91127IRAZ IC. The ISL91127IRNZ requires the ISL91127IRN-EVZ board, which has different feedback resistor placement and lacks R2 programmability. Using ISL91127IRA-EVZ with ISL91127IRNZ would not yield correct regulation or valid test results.
What power connections and test points are available on the ISL91127IRA-EVZ?
The ISL91127IRA-EVZ provides J1 (6-pin header) for load connection, J2 (6-pin header) for input power (PVIN/GND), and six labeled test points (TP1–TP6) for VOUT, LX1, LX2, EN, MODE, and FB. These facilitate oscilloscope probing, voltage/current measurement, and real-time waveform analysis without soldering wires to IC pins.
ISL91127IRA-EVZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Up or Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 2V ~ 5V
- Voltage - Input:
- 2A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91127IR
ISL91127IRA-EVZ FAQ
1.How can I place an order for ISL91127IRA-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91127IRA-EVZ 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 ISL91127IRA-EVZ reliable?
The price and inventory of ISL91127IRA-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91127IRA-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91127IRA-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91127IRA-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91127IRA-EVZ?
ISL91127IRA-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91127IRA-EVZ 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 ISL91127IRA-EVZ?
For technical support, including ISL91127IRA-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91127IRA-EVZ requirements.
6.How does Aetrix verify that ISL91127IRA-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91127IRA-EVZ 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 ISL91127IRA-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91127IRA-EVZ?
All ISL91127IRA-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91127IRA-EVZ, 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 ISL91127IRA-EVZ part is unused and in its original packaging.
Return procedure for ISL91127IRA-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL91127IRA-EVZ Tags
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DFR0571
DFRobot
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DFR0379
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DFR0205
DFRobot
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1385
Adafruit Industries LLC
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1944
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2465
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DC2468A
Analog Devices Inc.
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