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Renesas ISL28022FRZ-T
- Part No.:
- ISL28022FRZ-T
- Manufacturer:
- Renesas
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
ISL28022FRZ-T.pdf
- Description:
- IC PWR MONITOR 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,386
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Product details
Overview
ISL28022FRZ-T from Renesas Electronics is a precision bidirectional digital power monitor IC for high-side and low-side current sensing with integrated 16-bit ∑∆ ADC, I²C/SMBus interface, 0V–60V common-mode input range, <0.3% voltage/current measurement error, and operation from –40°C to +125°C in a 16-lead QFN package. It delivers calculated power, configurable fault thresholds, and supports telecom, server, and automotive power distribution monitoring.
For engineers reviewing the ISL28022FRZ-T datasheet, ISL28022FRZ-T pinout, ISL28022FRZ-T application, or ISL28022FRZ-T equivalent, key selection considerations include its 16-lead QFN footprint, ±40mV full-scale shunt voltage range at PGA gain /1, 700µA typical active supply current, 3.4MHz high-speed I²C support, and dual-channel sequential bus voltage + current measurement capability.
Technical Context
The ISL28022FRZ-T implements a third-order sigma-delta ADC with 1kHz input signal bandwidth and internal 1.2V bandgap reference. Its analog front-end multiplexer alternates between single-ended VBUS and fully differential shunt voltage (VINP–VINM) sampling, enabling sequential bus voltage and current acquisition.
Digital control logic manages mode-selectable conversion timing (72µs to 64ms), register-based shunt resistor value storage for current calculation, and programmable overvoltage/undervoltage/current fault detection with open-drain interrupt output on EXT_CLK/INT. The device operates autonomously without external microcontroller intervention during measurement cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Voltage Range | 0V to 60V common-mode - enables direct sensing in telecom (-48V), 12V/24V automotive, and 48V server PDN without level-shifting circuitry. |
| Current Sense Accuracy | <0.3% error at +25°C - ensures precise load current reporting for battery charge/discharge control and power budgeting. |
| ADC Resolution | 16-bit sigma-delta - provides 10µV LSB step size for shunt voltage, supporting sub-milliohm shunt use with high dynamic range. |
| I²C Interface Speed | Up to 3.4MHz - allows rapid register reads in high-update-rate power telemetry applications like CPU VRM monitoring. |
| Supply Current | 700µA typical active current - minimizes self-heating impact on measurement stability in thermally constrained modules. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and base station power supplies. |
| ESD Rating | 8kV HBM - robust enough for handling in uncontrolled assembly environments without additional protection circuitry. |
Pinout & Package
ISL28022FRZ-T is housed in a 3mm × 3mm, 16-lead QFN package with exposed thermal pad (EPAD) connected to GND. The package supports reflow soldering per JEDEC J-STD-020 and offers θJA = 52°C/W for efficient thermal dissipation in compact power systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINP | Current sense plus input | High-side or low-side shunt connection point; accepts up to 63V common-mode voltage relative to GND. |
| VINM | Current sense minus input | Differential complement to VINP; supports bidirectional current flow detection via polarity of measured VSENSE. |
| VBUS | Bus voltage sense input | Single-ended input for 0–60V rail monitoring; internally scaled with programmable range (BRNG = 0–3). |
| GND | Ground reference | Analog/digital ground reference; EPAD must be soldered to PCB ground plane for thermal and noise performance. |
| VCC | Positive supply | 3.0V–5.5V analog supply; powers internal regulator, ADC, and logic - independent of monitored bus voltage. |
| SCL/SMBCLK | I²C clock input | Accepts standard or fast-mode-plus (3.4MHz) clock; includes internal hysteresis for noise immunity. |
| SDA/SMBDAT | I²C data I/O | Open-drain bidirectional line requiring external pull-up; compatible with mixed-voltage I²C buses via level translation. |
| A0, A1 | I²C address select | Two-pin binary encoding for 16 unique slave addresses - enables multi-device bus configuration without address conflicts. |
| EXT_CLK/INT | Configurable I/O | Either external ADC clock input (synchronizes sampling) or open-drain interrupt output (fault signaling). |
Key Features
| Feature | Design Value |
|---|---|
| Programmable PGA gain (/1, /2, /4, /8) | Enables optimal ADC utilization across shunt values from 0.1mΩ to 10mΩ while maintaining 10µV LSB resolution. |
| Integrated power calculation | Hardware multiplier computes real-time W = Vbus × Iload; eliminates host MCU computation overhead and latency. |
| Configurable fault thresholds | Independent OV/UV on VBUS and OC on shunt voltage - triggers INT pin assertion without host polling, reducing system response time. |
| Lossless DCR sensing support | Internal offset calibration and CMRR >110dB allow accurate current measurement using inductor DCR instead of discrete shunts. |
| Power-down mode | Reduces supply current to 5–15µA - suitable for always-on battery-backed monitoring in standby states. |
Applications
| Server Power Telemetry | Automotive Body Control Module |
|---|---|
Use Scenario: Real-time monitoring of 12V/48V distribution rails and CPU/GPU VRMs in rack-mounted servers. IC Role / Device Role / Timing Role: Digital power monitor providing synchronized Vbus, Iload, and Pload registers via I²C for BMC firmware polling at 100Hz. Use Value: Enables dynamic power capping, thermal derating, and predictive failure analysis using <0.3% measurement accuracy across –40°C to +125°C. | Use Scenario: Monitoring current draw of lighting, HVAC, and infotainment subsystems in 12V vehicle electrical architecture. IC Role / Device Role / Timing Role: Fault-aware current sensor triggering interrupt-driven diagnostics upon overcurrent events in body ECU. Use Value: Eliminates need for discrete comparators and reduces BOM count by integrating threshold detection, ADC, and I²C interface in one 3×3mm QFN. |
| Battery Management System | Industrial DC/DC Converter |
Use Scenario: Bidirectional current and voltage tracking in Li-ion pack charging/discharging circuits with 0V–60V compliance. IC Role / Device Role / Timing Role: Precision shunt monitor feeding Coulomb counting and state-of-charge algorithms in battery gauge IC or host MCU. Use Value: Delivers ±75µV offset and <0.3% gain error to maintain <1% SoC drift over temperature, critical for EV auxiliary battery runtime estimation. | Use Scenario: Input/output power verification and fault logging in isolated 48V-to-12V telecom DC/DC modules. IC Role / Device Role / Timing Role: Dual-channel monitor measuring primary-side bus voltage and secondary-side load current simultaneously. Use Value: Supports compliance with IEC 62368-1 energy validation requirements using hardware-calculated power values traceable to internal 1.2V reference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital power monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL28023FRZ-T | QFN24 package; adds LV auxiliary differential channel, internal temperature sensor, margin DAC, and PMBus support. | Required for designs needing dual independent shunt monitoring or closed-loop margining control. | Select ISL28023FRZ-T when extended feature set justifies larger footprint and higher cost; ISL28022FRZ-T remains optimal for cost-sensitive single-shunt applications. |
| INA226AIDR | TI part in 10-lead VSSOP; 16-bit delta-sigma ADC, 0–36V Vbus, 0.1% current accuracy, no external clock option. | Limited to ≤36V systems; lacks EXT_CLK/INT flexibility and 60V common-mode headroom. | Choose INA226AIDR only for ≤36V applications where Renesas' 60V range and interrupt-driven fault response are not required. |
Compared with ISL28022FRZ-T, ISL28023FRZ-T adds auxiliary sensing and PMBus but increases board area by 50%, while INA226AIDR trades 60V capability and interrupt flexibility for TI ecosystem integration - making ISL28022FRZ-T the optimal balance of voltage range, accuracy, and compact QFN packaging.
Availability
ISL28022FRZ-T is available at Aetrix Electronics and suitable for server power telemetry, automotive body control modules, and industrial DC/DC converter applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant 16-lead QFN packaging.
Supply support for ISL28022FRZ-T 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 devices, and SoC solutions for automotive, industrial, and datacenter markets.
The ISL28022FRZ-T belongs to Renesas' Digital Power Monitor (DPM) product line, engineered specifically for high-accuracy, low-power, and wide-input-range current/voltage/power monitoring in space-constrained power systems.
FAQ
What is the maximum common-mode voltage the ISL28022FRZ-T can measure?
The ISL28022FRZ-T supports a common-mode input voltage range of 0V to 60V on VINP and VINM pins, with absolute maximum rating of 63V. This allows direct high-side or low-side current sensing in 48V telecom, 12V/24V automotive, and industrial power rails without external level-shifting components. The device maintains <0.3% measurement accuracy across this full range at +25°C.
Does the ISL28022FRZ-T support bidirectional current measurement?
Yes, the ISL28022FRZ-T supports true bidirectional current measurement via its differential VINP–VINM inputs. The polarity of the measured shunt voltage determines current direction, and the 16-bit ADC resolves both positive and negative values with 10µV LSB step size. This enables accurate monitoring of battery charge/discharge cycles and regenerative braking currents in automotive and UPS applications.
How does the ISL28022FRZ-T calculate power, and where is the result stored?
The ISL28022FRZ-T performs hardware-based multiplication of digitally acquired bus voltage and load current values to compute real-time power (W). The calculated power value is stored in the dedicated POWER register (address 0x05), accessible via I²C. This eliminates host MCU computational overhead and ensures deterministic, low-latency power telemetry synchronized with ADC sampling.
Can the ISL28022FRZ-T operate with a 3.3V supply while monitoring a 60V bus?
Yes, the ISL28022FRZ-T operates from a separate 3.0V–5.5V VCC supply independent of the monitored bus voltage. Its 0V–60V common-mode input range on VINP/VINM and VBUS pins allows full functionality with a 3.3V logic supply - enabling safe, isolated monitoring of high-voltage rails without level shifters or auxiliary regulators.
What fault conditions can trigger the INT pin on the ISL28022FRZ-T?
The INT pin on the ISL28022FRZ-T asserts as an open-drain output when any enabled fault condition occurs: overvoltage (OVb) or undervoltage (UVb) on VBUS, or overcurrent (OCsh) on the shunt voltage. Thresholds are user-programmable via configuration registers, and the interrupt persists until cleared by reading the corresponding status register - enabling reliable event-driven system diagnostics without continuous polling.
ISL28022FRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Digital Power Monitor
- Voltage - Input:
- 0V ~ 60V
- Voltage - Supply:
- 3V ~ 5.5V
- Current - Supply:
- 700 µA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
ISL28022FRZ-T FAQ
1.How can I place an order for ISL28022FRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL28022FRZ-T 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 ISL28022FRZ-T reliable?
The price and inventory of ISL28022FRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL28022FRZ-T is usually 5 days.
3.What payment methods are accepted for ISL28022FRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL28022FRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL28022FRZ-T?
ISL28022FRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL28022FRZ-T 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 ISL28022FRZ-T?
For technical support, including ISL28022FRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL28022FRZ-T requirements.
6.How does Aetrix verify that ISL28022FRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL28022FRZ-T 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 ISL28022FRZ-T meets industry standards.
7.What is the process for return or replacement of ISL28022FRZ-T?
All ISL28022FRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL28022FRZ-T, 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 ISL28022FRZ-T part is unused and in its original packaging.
Return procedure for ISL28022FRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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