My Inquiry
My Account
Renesas ISL91127IIN-EVZ
- Part No.:
- ISL91127IIN-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91127IIN-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91127
- Quantity:
- Payment:
- Shipping:
Inventory:4,971
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL91127IIN-EVZ from Renesas Electronics is an evaluation board for the ISL91127IR high-efficiency buck-boost regulator, designed to validate 3.3V fixed-output operation with 2A capability across 2.5V–4.35V battery input range. It implements Renesas' proprietary 4-switch synchronous architecture, 2.5MHz switching, and seamless buck/boost mode transitions for brownout-free power in portable systems.
For engineers reviewing the ISL91127IIN-EVZ datasheet, ISL91127IIN-EVZ pinout, ISL91127IIN-EVZ application, or ISL91127IIN-EVZ equivalent, this board enables rapid characterization of efficiency, load transient response, soft-start behavior, and PFM/PWM mode switching under real-world Li-ion battery voltage profiles (1.8V–5.5V input).
Technical Context
The ISL91127IIN-EVZ implements a complete reference design for the ISL91127IR buck-boost IC, featuring a 1µH shielded inductor, 2×10µF X5R input capacitors, 2×22µF X5R output capacitors, and all necessary feedback and MODE configuration for fixed 3.3V output. It supports both auto PFM and forced PWM operation via the MODE pin.
Board-level validation includes thermal pad soldering to PGND, optimized high-current LX1/LX2 routing, SGND/PNGD separation per datasheet layout guidelines, and provision for external clock synchronization. The design targets <10mV output ripple at 2A load and >94% peak efficiency at 3.6V input/3.3V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Target Device | ISL91127IR fixed 3.3V output buck-boost regulator |
| Input Voltage Range | 1.8V to 5.5V - validated across full battery discharge curve including deep brownout (2.5V) |
| Output Capability | 2A continuous @ 3.3V - verified per Figure 18 and Table on page 18 of FN8859 Rev 1.01 |
| Switching Frequency | 2.5MHz nominal - minimizes external component size; confirmed in Figure 7 and datasheet specs |
| Quiescent Current | 30µA - measured in PFM mode with no load; enables multi-week standby in medical devices |
| Protection Features | Short-circuit, over-temperature (155°C shutdown), undervoltage lockout - fully implemented per datasheet functional description |
Availability
ISL91127IIN-EVZ is available at Aetrix Electronics and suitable for handheld consumer electronics, battery-powered medical instrumentation, wireless communication modules, and RF power amplifier biasing requiring stable component supply and fast time-to-test validation.
Supply support for ISL91127IIN-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 is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications with emphasis on energy efficiency and system integration.
The ISL91127IIN-EVZ belongs to Renesas' high-efficiency buck-boost regulator product line, engineered specifically for advanced single-cell Li-ion battery systems where maintaining regulated output voltage during deep discharge (down to 2.5V) is critical.
FAQ
What is the primary function of the ISL91127IIN-EVZ?
The ISL91127IIN-EVZ is an evaluation board for the ISL91127IR buck-boost regulator. Its primary function is to provide a fully assembled, tested reference platform enabling engineers to validate performance-including efficiency, transient response, soft-start timing, and mode transition behavior-of the ISL91127IR in fixed 3.3V output configurations before integrating into end-product designs.
Does the ISL91127IIN-EVZ support adjustable output voltages?
No. The ISL91127IIN-EVZ is configured exclusively for the fixed 3.3V output version of the ISL91127IR (ISL91127IRNZ). It connects VOUT directly to FB per datasheet Figure 1 and ordering information. For adjustable output testing, Renesas offers the ISL91127IRA-EVZ board supporting the ISL91127IRAZ variant.
What input voltage range is validated on the ISL91127IIN-EVZ?
The ISL91127IIN-EVZ is validated across the full 1.8V to 5.5V input range specified for the ISL91127IR, with particular focus on battery-relevant conditions: 2.5V to 4.35V. Performance curves in the FN8859 datasheet (Figures 4, 5, 12, 13) confirm stable 3.3V regulation and >90% efficiency down to 2.5V input at 2A load.
How is thermal management implemented on the ISL91127IIN-EVZ?
The ISL91127IIN-EVZ implements thermal management per ISL91127IR datasheet requirements: the QFN package's exposed thermal pad (EPAD) is soldered directly to a large PGND copper pour, and high-current LX1/LX2 traces are widened and routed over internal ground planes. This ensures junction temperature remains below 125°C at 2A continuous load, consistent with θJC = 5°C/W and θJA = 40°C/W ratings.
Can the ISL91127IIN-EVZ be synchronized to an external clock?
Yes. The MODE pin on the ISL91127IIN-EVZ is accessible and supports external clock synchronization in the 2.75MHz to 3.25MHz range, as specified in the ISL91127IR datasheet Pin Descriptions (page 3). This allows noise-sensitive applications to avoid beat frequencies by locking the ISL91127IR's 2.5MHz oscillator to a system master clock.
ISL91127IIN-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:
- 1V ~ 5.2V
- Voltage - Input:
- 2.1A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91127
ISL91127IIN-EVZ FAQ
1.How can I place an order for ISL91127IIN-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91127IIN-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 ISL91127IIN-EVZ reliable?
The price and inventory of ISL91127IIN-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91127IIN-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91127IIN-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91127IIN-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91127IIN-EVZ?
ISL91127IIN-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91127IIN-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 ISL91127IIN-EVZ?
For technical support, including ISL91127IIN-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91127IIN-EVZ requirements.
6.How does Aetrix verify that ISL91127IIN-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91127IIN-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 ISL91127IIN-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91127IIN-EVZ?
All ISL91127IIN-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91127IIN-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 ISL91127IIN-EVZ part is unused and in its original packaging.
Return procedure for ISL91127IIN-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL91127IIN-EVZ 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
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…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
