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Renesas ISL81802EVAL1Z
- Part No.:
- ISL81802EVAL1Z
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL81802EVAL1Z.pdf
- Description:
- EVAL BOARD FOR ISL81802
- Quantity:
- Payment:
- Shipping:
Inventory:1,671
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Product details
Overview
ISL81802EVAL1Z from Renesas Electronics is a dual-phase evaluation board for the ISL81802 80V high-voltage synchronous buck controller, configured for 12V/20A output with 200kHz switching frequency, programmable soft-start, and integrated UV/OV/OC/OT protection. It supports forced PWM or DEM operation and enables rapid validation of high-current industrial power supplies.
For engineers reviewing the ISL81802EVAL1Z datasheet, ISL81802EVAL1Z pinout, ISL81802EVAL1Z application, or ISL81802EVAL1Z equivalent, this board delivers verified performance at 18–80V input, 12V/20A regulated output, dual-phase current sharing, OCP set at 22A, and configurable protection modes (constant current or hiccup).
Technical Context
The ISL81802EVAL1Z implements the ISL81802 TQFN-32 controller in a fully populated, two-phase synchronous buck topology using Infineon BSC070N10NS5ATMA1 MOSFETs and Wurth 74439370068 6.8µH inductors. It features independent enable control, external soft-start via C22 (47nF), and selectable PWM/DEM mode via jumper J6.
Protection is implemented through hardware-based thresholds: UVLO rising at 16.49V (set by R1/R5), OVP/OTP/UVP monitoring, PGOOD signaling, and dual-level OCP - pulse-by-pulse peak limit (21.25A per phase) plus hiccup-mode average current limit (22A total). The board operates from –40°C to +85°C without forced airflow at full 20A load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 18V to 80V - supports wide-range industrial and telecom DC inputs including 24V, 48V, and 72V battery/bus systems. |
| Output Voltage | 12V ±3% - factory-configured fixed output with feedback divider (R2 = 487kΩ, R12 = 34.8kΩ) for stable regulation. |
| Maximum Output Current | 20A continuous - rated at ambient room temperature with no airflow, limited by FETs and inductor selection. |
| Switching Frequency | 200kHz - fixed default set by RT = 169kΩ (R19), programmable from 100kHz to 1MHz for EMI/efficiency trade-off. |
| OCP Set Point | 22A total (two-phase) - configured via RIM = 21kΩ (R8) for constant-current overcurrent protection. |
| Operating Mode | Dual-phase synchronous buck - interleaved operation reduces input/output ripple and improves thermal distribution. |
| Protection Features | UVLO (16.49V rise), OVP, OTP, UVP, PGOOD, pulse-by-pulse current limit, and hiccup-mode average OCP. |
Availability
ISL81802EVAL1Z is available at Aetrix Electronics and suitable for industrial power supply validation, telecom rectifier testing, and high-voltage DC/DC converter development requiring stable component supply, design-in support, and reference-grade performance verification.
Supply support for ISL81802EVAL1Z 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 infrastructure applications.
The ISL81802EVAL1Z belongs to Renesas' high-voltage DC/DC controller evaluation platform family, designed specifically to accelerate adoption of the ISL81802 dual-phase buck controller in rugged 18–80V input systems.
FAQ
What is the primary function of the ISL81802EVAL1Z?
The ISL81802EVAL1Z is a fully assembled dual-phase evaluation board for the ISL81802 80V synchronous buck controller. It provides a turnkey platform to validate performance, configure protection settings, and characterize efficiency, transient response, and thermal behavior under real-world 18–80V input conditions. The ISL81802EVAL1Z integrates all critical power components including MOSFETs, inductors, and feedback networks.
Can the ISL81802EVAL1Z be used for output voltages other than 12V?
Yes - the ISL81802EVAL1Z's output voltage is set by an external resistor divider on the FB_OUT pin. While factory-configured for 12V (R2 = 487kΩ, R12 = 34.8kΩ), it supports adjustable outputs from 0.8V up to the maximum determined by the feedback network and controller limits. Adjusting R12 recalculates VOUT per Equation 2 in the user manual, maintaining stability across the range.
How is overcurrent protection configured on the ISL81802EVAL1Z?
The ISL81802EVAL1Z supports two OCP modes: constant current or hiccup, selected via jumper J7. Its default configuration uses constant-current mode with a 22A total trip point set by RIM = 21kΩ (R8). Pulse-by-pulse current limiting is independently set at 21.25A per phase via RS = 4mΩ (R14), providing layered protection against short-circuit and overload events.
Does the ISL81802EVAL1Z support synchronization to an external clock?
Yes - the ISL81802 controller on the ISL81802EVAL1Z includes a Phase-Locked Loop (PLL) that accepts external clock signals via the PLL_IN pin. With proper compensation (R20 = 2.7kΩ, C27 = 10nF, C28 = 820pF), the board can synchronize its 200kHz internal oscillator to an external source - enabling multi-board interleaving or EMI reduction through frequency alignment.
What test equipment is required to operate the ISL81802EVAL1Z?
A 0–80V, ≥30A power supply; electronic loads capable of sinking up to 30A; a 100MHz quad-trace oscilloscope; and digital multimeters are recommended. Test points TP1–TP23 provide direct access to key nodes including VIN, VOUT, PHASE, COMP, SS/TRK1, and gate drive signals - enabling comprehensive characterization of startup, regulation, ripple, and fault response on the ISL81802EVAL1Z.
ISL81802EVAL1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 12V
- Voltage - Input:
- 20A
- Regulator Topology:
- 18V ~ 80V
- Frequency - Switching:
- Buck
- Contents:
- 200kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL81802
ISL81802EVAL1Z FAQ
1.How can I place an order for ISL81802EVAL1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL81802EVAL1Z 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 ISL81802EVAL1Z reliable?
The price and inventory of ISL81802EVAL1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL81802EVAL1Z is usually 5 days.
3.What payment methods are accepted for ISL81802EVAL1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL81802EVAL1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL81802EVAL1Z?
ISL81802EVAL1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL81802EVAL1Z 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 ISL81802EVAL1Z?
For technical support, including ISL81802EVAL1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL81802EVAL1Z requirements.
6.How does Aetrix verify that ISL81802EVAL1Z is sourced from the original manufacturer or authorized distributors?
All ISL81802EVAL1Z 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 ISL81802EVAL1Z meets industry standards.
7.What is the process for return or replacement of ISL81802EVAL1Z?
All ISL81802EVAL1Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL81802EVAL1Z, 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 ISL81802EVAL1Z part is unused and in its original packaging.
Return procedure for ISL81802EVAL1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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