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Renesas ISL78234EVAL1Z
- Part No.:
- ISL78234EVAL1Z
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL78234EVAL1Z.pdf
- Description:
- EVAL BOARD FOR ISL78234
- Quantity:
- Payment:
- Shipping:
Inventory:3,147
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Product details
Overview
ISL78234EVAL1Z from Renesas Electronics is an evaluation board designed to demonstrate the ISL78234 4A synchronous buck regulator in automotive point-of-load applications. It supports 2.7V–5.5V input, delivers up to 4A at adjustable output voltages (0.8V–3.3V), operates at default 2MHz switching frequency, and features internal compensation, soft-start control, and PFM/PWM mode selection via onboard switches.
For engineers reviewing the ISL78234EVAL1Z datasheet, ISL78234EVAL1Z pinout, ISL78234EVAL1Z application, or ISL78234EVAL1Z equivalent, this board enables rapid validation of transient response, efficiency, thermal performance, and layout best practices for ISL78234-based power designs in automotive ECUs, ADAS sensors, and infotainment systems.
Technical Context
The ISL78234EVAL1Z implements a complete reference design for the ISL78234 4A synchronous buck regulator, including optimized 4-layer FR-4 PCB layout with 2oz copper, 0.68µH power inductor rated for 13.5A saturation current, and internal compensation network configured by tying COMP to VDD. It uses a 3x3mm TQFN-16 IC footprint and supports both fixed-frequency PWM and light-load PFM operation.
Board-level controls include SW1 for EN enable/disable and SW2 for PFM/PWM mode selection; frequency is set via R12 (default 95.3kΩ for 2MHz) and soft-start time is set by CSS (default 33nF for ~10ms). The board ships preset to 1.8V output and includes test points (P1–P8), scope probe pads (J1/J2), and LED status indicator (D1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Board Type | Evaluation board for ISL78234 4A synchronous buck regulator - not a standalone IC or discrete component. |
| PCB Dimensions | 2.025 × 2.725 inches - compact size suitable for integration into lab test benches and system-level prototyping. |
| Layer Count & Copper | 4-layer FR-4 with 2oz copper - ensures low-impedance power delivery and robust thermal dissipation for high-current transients. |
| Default Output | 1.8V @ up to 4A - factory-configured for immediate testing without resistor changes; adjustable down to 0.8V or up to 3.3V via R1/R2 divider. |
| Switching Frequency | Default 2MHz (via R12 = 95.3kΩ) - programmable from 500kHz to 4MHz to balance efficiency vs. external component size. |
| Soft-Start Time | ~10ms (with 33nF CSS) - prevents inrush current during startup; adjustable via external capacitor per Equation 3. |
| Input Voltage Range | 2.7V to 5.5V - matches automotive battery rail requirements including cold-crank and load-dump conditions. |
Availability
ISL78234EVAL1Z is available at Aetrix Electronics and suitable for automotive ECU development, ADAS sensor power validation, and infotainment subsystem prototyping requiring stable component supply, repeatable test conditions, and production-intent layout fidelity.
Supply support for ISL78234EVAL1Z 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 manufacturer specializing in microcontrollers, analog power devices, and automotive SoCs, with deep expertise in functional-safety-compliant power management solutions.
The ISL78234EVAL1Z belongs to Renesas' ISL7823x evaluation platform family, engineered specifically to accelerate qualification and implementation of high-efficiency, low-quiescent-current buck regulators in AEC-Q100-compliant automotive applications.
FAQ
What is the ISL78234EVAL1Z used for?
The ISL78234EVAL1Z is an evaluation board for the ISL78234 4A synchronous buck regulator. It enables engineers to validate performance metrics-including efficiency, transient response, thermal behavior, and layout sensitivity-under real-world automotive input conditions (2.7V–5.5V) and output configurations (0.8V–3.3V). The ISL78234EVAL1Z is not a production power module but a design verification tool.
Does the ISL78234EVAL1Z include the ISL78234 IC?
Yes, the ISL78234EVAL1Z includes one ISL78234ARZ IC mounted in a 3x3mm 16-lead TQFN package. This is the exact production-grade regulator intended for automotive point-of-load applications. The board provides full access to all control pins (EN, SYNC, SS, FS, COMP) and critical test points for oscilloscope probing and load characterization.
Can the ISL78234EVAL1Z be used to evaluate other ISL7823x regulators?
No - the ISL78234EVAL1Z is specifically calibrated and laid out for the ISL78234 (4A version). While the ISL78233EVAL1Z and ISL78235EVAL1Z share identical board topology and silkscreen naming conventions, each variant uses its respective IC (3A or 5A) and has component values optimized for its current rating. Swapping ICs is not supported or validated.
How do I change the output voltage on the ISL78234EVAL1Z?
Output voltage is adjusted using the R1/R2 feedback divider. R2 is fixed at 100kΩ; R1 is selected based on target VOUT per Equation 1: R1 = R2 × (VOUT / VFB − 1), where VFB = 0.6V. For example, 1.2V output requires R1 ≈ 100kΩ. Values between 66kΩ and 450kΩ are typical. A 10–22pF capacitor may be added across R1 to improve transient response.
What equipment is required to operate the ISL78234EVAL1Z?
A 0–5V/10A DC power supply, electronic load capable of sinking up to 10A, 500MHz quad-trace oscilloscope, digital multimeters, and optionally a signal generator for EN/SYNC modulation are recommended. The board includes dedicated test points (P1–P8), scope probe pads (J1/J2), and terminal posts (P4/P5/P7/P8) for secure connections.
ISL78234EVAL1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1.8V
- Voltage - Input:
- 4A
- Regulator Topology:
- 2.7V ~ 5.5V
- Frequency - Switching:
- Buck
- Contents:
- 2MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL78234
ISL78234EVAL1Z FAQ
1.How can I place an order for ISL78234EVAL1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78234EVAL1Z 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 ISL78234EVAL1Z reliable?
The price and inventory of ISL78234EVAL1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78234EVAL1Z is usually 5 days.
3.What payment methods are accepted for ISL78234EVAL1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78234EVAL1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78234EVAL1Z?
ISL78234EVAL1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78234EVAL1Z 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 ISL78234EVAL1Z?
For technical support, including ISL78234EVAL1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78234EVAL1Z requirements.
6.How does Aetrix verify that ISL78234EVAL1Z is sourced from the original manufacturer or authorized distributors?
All ISL78234EVAL1Z 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 ISL78234EVAL1Z meets industry standards.
7.What is the process for return or replacement of ISL78234EVAL1Z?
All ISL78234EVAL1Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL78234EVAL1Z, 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 ISL78234EVAL1Z part is unused and in its original packaging.
Return procedure for ISL78234EVAL1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL78234EVAL1Z Tags
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