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Renesas ISL91110IIA-EVZ
- Part No.:
- ISL91110IIA-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91110IIA-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91110
- Quantity:
- Payment:
- Shipping:
Inventory:1,877
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Product details
Overview
ISL91110IIA-EVZ from Renesas Electronics is an evaluation board designed specifically for the ISL91110IIAZ adjustable-output buck-boost DC/DC regulator IC. It supports input voltages from 1.8V to 5.5V, delivers up to 2A output current, 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 of power architecture in portable battery-powered systems.
For engineers reviewing the ISL91110IIA-EVZ datasheet, ISL91110IIA-EVZ pinout, ISL91110IIA-EVZ application, or ISL91110IIA-EVZ equivalent, this board provides hands-on access to key regulator behaviors including auto-PFM/forced-PWM mode selection, enable control via jumper J3, external clock synchronization capability, and Kelvin-sense efficiency measurement points.
Technical Context
The ISL91110IIA-EVZ implements a complete hardware platform for evaluating the ISL91110IIAZ - a high-efficiency, high-current buck-boost regulator using Intersil's proprietary algorithm to maintain regulation when input voltage crosses output voltage. It integrates dual low-RDS(on) internal FETs, supports seamless transition between buck and boost modes, and minimizes output ripple near VIN ≈ VOUT.
Board-level features include jumper-selectable EN and MODE signals, test points for LX1/LX2/VOUT/EN, multi-pin connectors (J1/J2) rated for high-current operation, and a bill of materials centered on the WLCSP-packaged ISL91110IIAZ, 1µH power inductor (Toko DFE322512C), and 330µF tantalum output capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Target IC | ISL91110IIAZ - adjustable-output buck-boost regulator in WLCSP package |
| Input Voltage Range | 1.8V to 5.5V - compatible with Li-ion, Li-polymer, and multi-cell alkaline battery inputs |
| Output Voltage Range | 2.0V to 5.0V - set via external resistor R2 (e.g., 324kΩ for 3.3V default) |
| Max Output Current | 2A - validated at PVIN = 2.5V, VOUT = 3.3V; supported by 4.6A-rated inductor and low-ESR capacitors |
| Switching Frequency | 2.5MHz - enables compact passive component selection and fast transient response |
| Operating Temperature | –40°C to +85°C - qualified for industrial and portable consumer environments |
| Sync Capability | External clock input (2.75–3.25MHz) accepted on MODE pin - allows system-level timing coordination |
Availability
ISL91110IIA-EVZ is available at Aetrix Electronics and suitable for battery-powered portable electronics, USB-C PD power delivery subsystems, and embedded systems requiring stable component supply during early-stage power architecture validation and firmware co-development.
Supply support for ISL91110IIA-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 formed from the merger of Renesas Technology and NEC Electronics, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.
The ISL91110IIA-EVZ belongs to Renesas' legacy Intersil power evaluation platform family, engineered to accelerate design-in of high-efficiency buck-boost regulators for next-generation battery chemistries and dynamic load conditions.
FAQ
What is the primary function of the ISL91110IIA-EVZ?
The ISL91110IIA-EVZ is an evaluation board for the ISL91110IIAZ buck-boost regulator IC. It enables engineers to validate performance parameters - including efficiency, transient response, mode switching behavior, and programmable output voltage - under real-world input/output conditions without custom PCB development. The board directly interfaces with the ISL91110IIAZ WLCSP device and provides accessible test points, jumpers, and connectors for rapid prototyping.
How do I configure the output voltage on the ISL91110IIA-EVZ?
The ISL9110IIA-EVZ uses resistor R2 to set the output voltage via the ISL91110IIAZ's feedback network. By default, R2 = 324kΩ yields 3.3V. To change VOUT, replace R2 with a 1% tolerance resistor selected from Table 1 - e.g., 249kΩ for 4.0V or 191kΩ for 5.0V. The board schematic confirms R2 connects between FB and GND, with no other external components required for adjustment.
Can the ISL91110IIA-EVZ operate in forced-PWM mode?
Yes, the ISL91110IIA-EVZ supports both auto-PFM and forced-PWM operation via jumper J4. Shorting pins 1–2 of J4 connects MODE to VIN, enabling forced-PWM mode for consistent switching frequency and reduced low-load output ripple. Removing the jumper allows external clock injection (2.75–3.25MHz) or leaves MODE floating for auto-PFM operation - as documented in the AN1912 Quick Start Guide.
What are the power connection methods for the ISL91110IIA-EVZ?
Power is delivered to the ISL91110IIA-EVZ through 6-pin header J1, which accepts input voltage (1.8V–5.5V) and provides Kelvin sense connections (S+ and S−) for accurate efficiency measurements. Load is connected via J2, also a 6-pin header, with dedicated VOUT and GND terminals plus Kelvin sense points. Both headers support high-current operation and minimize measurement error during characterization.
Does the ISL91110IIA-EVZ include the ISL91110IIAZ IC?
Yes, the ISL91110IIA-EVZ includes one ISL91110IIAZ IC mounted in its W4x5.20 WLCSP package (U1), as confirmed in Table 2 of AN1912. This is the adjustable-output variant of the ISL91110 family and is the only regulator IC on the board - distinguishing it from the fixed-output ISL91110IIN-EVZ and ISL91110II2A-EVZ variants.
ISL91110IIA-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:
- 2A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91110
ISL91110IIA-EVZ FAQ
1.How can I place an order for ISL91110IIA-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91110IIA-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 ISL91110IIA-EVZ reliable?
The price and inventory of ISL91110IIA-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91110IIA-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91110IIA-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91110IIA-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91110IIA-EVZ?
ISL91110IIA-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91110IIA-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 ISL91110IIA-EVZ?
For technical support, including ISL91110IIA-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91110IIA-EVZ requirements.
6.How does Aetrix verify that ISL91110IIA-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91110IIA-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 ISL91110IIA-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91110IIA-EVZ?
All ISL91110IIA-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91110IIA-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 ISL91110IIA-EVZ part is unused and in its original packaging.
Return procedure for ISL91110IIA-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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