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Renesas ISL91127II2A-EVZ
- Part No.:
- ISL91127II2A-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91127II2A-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91127
- Quantity:
- Payment:
- Shipping:
Inventory:4,579
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Product details
Overview
ISL91127II2A-EVZ from Renesas Electronics is an evaluation board designed specifically for the ISL91127II2AZ fixed-output 3.5V buck-boost switching regulator IC. It supports input voltages from 1.8V to 5.5V, delivers up to 2.2A output current at 3.5V, operates at 2.5MHz switching frequency, and functions across –40°C to +85°C ambient temperature - enabling rapid validation of high-efficiency power delivery in battery-powered portable electronics.
For engineers reviewing the ISL91127II2A-EVZ datasheet, ISL91127II2A-EVZ pinout, ISL91127II2A-EVZ application, or ISL91127II2A-EVZ equivalent, this board provides immediate access to jumper-selectable EN and MODE control, Kelvin-sense test points for accurate efficiency measurement, and optimized PCB layout with WLCSP-packaged ISL91127II2AZ integration.
Technical Context
The ISL91127II2A-EVZ implements a dedicated hardware platform for evaluating the ISL91127II2AZ IC, which uses Intersil's proprietary buck-boost algorithm to maintain regulation when input voltage crosses the fixed 3.5V output. It features on-board jumpers J3 (EN) and J4 (MODE) for functional configuration without soldering.
This board supports both auto-PFM and forced-PWM operation modes, includes multi-pin connectors (J1/J2) rated for high-current input and load connections, and integrates critical passive components - including a 1µH Toko DFE322512C inductor and 330µF tantalum output capacitor - to demonstrate real-world transient response and ripple performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Board Type | Evaluation board for ISL91127II2AZ fixed 3.5V buck-boost regulator IC |
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/NiMH battery inputs |
| Output Voltage | Fixed 3.5V - factory-configured via internal feedback network; no external resistor required |
| Max Output Current | 2.2A at PVIN = 2.5V, VOUT = 3.3V (derated per thermal limits); board validated for sustained 2A operation |
| Switching Frequency | 2.5MHz - enables compact external component selection and minimizes EMI in space-constrained designs |
| Operating Temperature | –40°C to +85°C ambient - matches industrial-grade qualification of ISL91127II2AZ IC |
| Control Interface | Jumper-selectable EN (J3) and MODE (J4) - simplifies functional testing without MCU or logic signals |
Availability
ISL91127II2A-EVZ is available at Aetrix Electronics and suitable for battery-powered portable electronics, USB-C PD sink applications, and low-voltage industrial IoT edge nodes requiring stable component supply and fast prototyping capability.
Supply support for ISL91127II2A-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 leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL91127II2A-EVZ belongs to Renesas' ISL91127 evaluation board family, engineered to accelerate development of high-efficiency, wide-input-range buck-boost power supplies for next-generation battery chemistries.
FAQ
What is the ISL91127II2A-EVZ used for?
The ISL91127II2A-EVZ is an evaluation board designed exclusively for the ISL91127II2AZ fixed 3.5V buck-boost regulator IC. It enables engineers to validate efficiency, transient response, and thermal performance under real operating conditions - including input voltages from 1.8V to 5.5V and loads up to 2.2A - without designing custom PCBs. The ISL91127II2A-EVZ includes test points, jumpers, and optimized layout to replicate production-level behavior.
Does the ISL91127II2A-EVZ support adjustable output voltage?
No, the ISL91127II2A-EVZ is configured for fixed 3.5V output only, matching the internal feedback setting of the ISL91127II2AZ IC it evaluates. Unlike the ISL91127IIA-EVZ (which uses R2 for voltage programming), this board omits R2 and sets FB internally. To evaluate adjustable outputs, use the ISL91127IIA-EVZ instead. The ISL91127II2A-EVZ does not support external resistor-based voltage tuning.
How do I enable or disable the ISL91127II2A-EVZ regulator?
Enable/disable control is implemented via jumper J3: shorting pins 1–2 connects EN to VIN (enabling the ISL91127II2AZ IC), while removing the jumper leaves EN floating (disabling regulation). This hardware-based control eliminates need for external logic signals. The ISL91127II2A-EVZ schematic confirms J3 directly routes VIN to the EN pin of the ISL91127II2AZ, ensuring deterministic startup and shutdown behavior during evaluation.
Can the ISL91127II2A-EVZ operate in forced-PWM mode?
Yes, the ISL91127II2A-EVZ supports both auto-PFM and forced-PWM operation via jumper J4. Shorting pins 1–2 applies VIN to the MODE pin, forcing continuous PWM conduction regardless of load. Leaving J4 open enables automatic PFM/PWM transition for optimal light-load efficiency. This dual-mode capability allows direct comparison of ripple, efficiency, and transient response between modes using the same ISL91127II2A-EVZ hardware.
What are the key test points on the ISL91127II2A-EVZ?
The ISL91127II2A-EVZ includes dedicated Kelvin-sense test points S+ and S− on J1 and J2 headers for accurate input/output voltage measurement without lead resistance error. Additional test points TP2, TP3, and TP7 provide direct access to VOUT, EN, and LX node waveforms for oscilloscope probing. These points are documented in UG045 Rev.1.00 and enable precise efficiency calculation and switching-node analysis on the ISL91127II2A-EVZ.
ISL91127II2A-EVZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Up or Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 3.3V
- Voltage - Input:
- 2.1A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- -
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91127
ISL91127II2A-EVZ FAQ
1.How can I place an order for ISL91127II2A-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91127II2A-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 ISL91127II2A-EVZ reliable?
The price and inventory of ISL91127II2A-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91127II2A-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91127II2A-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91127II2A-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91127II2A-EVZ?
ISL91127II2A-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91127II2A-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 ISL91127II2A-EVZ?
For technical support, including ISL91127II2A-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91127II2A-EVZ requirements.
6.How does Aetrix verify that ISL91127II2A-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91127II2A-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 ISL91127II2A-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91127II2A-EVZ?
All ISL91127II2A-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91127II2A-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 ISL91127II2A-EVZ part is unused and in its original packaging.
Return procedure for ISL91127II2A-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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