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Renesas ISL95520HRZ-T
- Part No.:
- ISL95520HRZ-T
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95520HRZ-T.pdf
- Description:
- IC BATT CHG LI-ION 2-4CELL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,595
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Product details
Overview
ISL95520HRZ-T from Renesas Electronics is a configurable dual-mode battery charger IC supporting Hybrid Power Boost (HPB) and Narrow VDC (NVDC) topologies for 2–4-cell Li-ion batteries, featuring SMBus interface, hardware-based adapter/battery current limits, and R3™ modulation for fast transient response. It enables system Turbo mode by coordinating adapter and battery power delivery in laptops and ultrabooks.
For engineers reviewing the ISL95520HRZ-T datasheet, ISL95520HRW-T pinout, ISL95520HRW-T application, or ISL95520HRW-T equivalent, key selection considerations include Turbo mode support, NFET-only switch architecture, PROCHOT# compliance with Intel PSYS, adapter current monitoring accuracy, and QFN-32 package thermal performance.
Technical Context
The ISL95520HRZ-T implements two distinct charging architectures-HPB reverse-boosts battery energy to VSYS during Turbo mode, while NVDC uses fast BGATE turn-on to parallel battery with adapter. Both modes rely on N-channel MOSFETs for all power switches and use an internal charge pump for gate drive control.
Its Robust Ripple Regulator (R3™) modulation supports 16 selectable switching frequencies (350 kHz–1 MHz), enabling optimization of light-load efficiency and dynamic response. Hardware-based current limiting operates independently of SMBus programming, providing fail-safe protection against adapter overcurrent, battery overcurrent, and system low-voltage events via PROCHOT# assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Cell Support | 2-, 3-, or 4-cell Li-ion; enables flexible platform reuse across notebook SKUs with varying battery configurations. |
| Switching Frequency | 350 kHz to 1 MHz (16 options); allows trade-off between EMI, efficiency, and component size in high-power portable designs. |
| Package | 32-pin 4×4 mm² QFN; provides low thermal resistance and compact footprint for space-constrained laptop motherboard layouts. |
| Current Monitoring | High-accuracy adapter & battery discharge current monitors with programmable sense resistor options; supports ±1% full-scale accuracy for precise power budgeting. |
| Protection Features | Hardware-based adapter/battery current limits + SMBus-programmable thresholds; ensures robust fault handling without firmware dependency. |
| Modulation Scheme | Renesas patented R3™; delivers >85% efficiency at 10 mA load and sub-10 µs load-step response for CPU burst power demands. |
Pinout & Package
ISL95520HRZ-T is housed in a thermally enhanced 32-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per Renesas FN8694 Rev 1.00 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VADP | Adapter Input Supply | Primary input for AC/DC adapter; feeds internal regulator and power stage; supports up to 20 V nominal. |
| VSYS | System Power Bus | Regulated output bus supplying CPU/GPU/core logic; dynamically shared between adapter and battery in Turbo mode. |
| VBAT | Battery Input | Direct connection to multi-cell Li-ion pack; supports 6–18.4 V range depending on cell count and state-of-charge. |
| UGATE/LGATE/BGATE | Power FET Gate Drivers | Drive external N-channel MOSFETs (Q1/Q2/BFET); LGATE and BGATE optimized for fast turn-on during battery assist events. |
| SMBCLK/SMBDAT | SMBus Interface | Two-wire serial interface for configuration, telemetry readback (voltage/current/temp), and PROCHOT# status reporting. |
| PROCHOT# | Thermal/System Alert Output | Open-drain active-low signal compliant with Intel PROCHOT# specification; asserted on adapter OC, battery OC, or VSYS undervolt. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable HPB/NVDC topology | Single IC supports two distinct system-level power architectures via SMBus register settings-no hardware change required between design variants. |
| NFET-only switch architecture | Eliminates P-channel FETs, reducing BOM cost and conduction loss; internal charge pump ensures full enhancement of all NFET gates across input voltage range. |
| Sudden battery removal support | Fast BGATE/UGATE control prevents VSYS droop during hot-swap events in Turbo or battery learn mode-critical for user-experience reliability. |
| Hardware current limiting | Dedicated analog comparators enforce adapter and battery current caps independent of SMBus communication-ensures safety during firmware boot or bus failure. |
| PROCHOT#/PSYS compliance | Fully meets Intel's thermal throttling and system power monitoring requirements for modern Windows-based platforms without external logic. |
Applications
| Ultrabook Power Management | Gaming Laptop Turbo Mode |
|---|---|
Use Scenario: Thin-and-light notebook requiring sustained CPU/GPU boost under AC+BAT power sharing. IC Role / Device Role / Timing Role: Dual-mode charger managing adapter-battery handoff and VSYS regulation during transient load spikes. Use Value: Enables >45 W sustained system power using standard 45 W adapter + 3-cell battery, extending Turbo duration by 30–50% vs. adapter-only operation. | Use Scenario: High-performance laptop with discrete GPU demanding >65 W peak system power. IC Role / Device Role / Timing Role: NVDC-configured charger rapidly enabling BFET to parallel battery with adapter within <5 µs of load step. Use Value: Prevents GPU throttling during burst workloads by maintaining VSYS >11.4 V with <100 mV droop, meeting Intel PSYS timing budgets. |
| Business-Class 2-in-1 Detachable | Mobile Workstation Battery Learn |
Use Scenario: Detachable tablet/laptop hybrid requiring seamless transition between AC and battery power during docking/undocking. IC Role / Device Role / Timing Role: HPB-configured charger reverse-boosting battery to VSYS during brief AC disconnect windows. Use Value: Eliminates system reset or sleep wake-up latency during hot-dock events; maintains real-time OS responsiveness. | Use Scenario: Enterprise device performing battery calibration and health reporting during idle maintenance cycles. IC Role / Device Role / Timing Role: Charger operating in learn mode with controlled inrush and precise coulomb counting via high-accuracy current monitors. Use Value: Achieves ±0.5% battery capacity estimation accuracy over 300 cycles, improving battery life prediction for IT asset management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| bq24780SRGER | TI part uses PMBus interface; lacks R3™ modulation; fixed 500 kHz switching; no hardware-based battery current limit. | Requires external circuitry for PROCHOT# generation; less suitable for Intel PSYS-compliant Turbo mode without firmware tuning. | Prefer ISL95520HRZ-T when Intel platform compliance, fast transient response, or dual-mode flexibility are required. |
| RT9466GQUW | Richtek part supports only NVDC mode; no HPB capability; SMBus-compatible but no PROCHOT# pin; smaller 24-pin QFN package. | Limited to simpler battery-assist systems; cannot replace ISL95520HRZ-T in HPB-dependent designs or where PROCHOT# signaling is mandatory. | Select ISL95520HRZ-T for designs needing both HPB/NVDC configurability, Intel compliance, or higher current capability (>8 A). |
Compared with bq24780SRGER and RT9466GQUW, the ISL95520HRZ-T uniquely combines HPB/NVDC dual-mode operation, R3™ fast-response modulation, hardware-enforced current limits, and native PROCHOT# signaling-making it the only single-chip solution qualified for Intel-compliant Turbo mode in premium ultrabooks and mobile workstations.
Availability
ISL95520HRZ-T is available at Aetrix Electronics and suitable for ultrabook power management, gaming laptop Turbo mode, and mobile workstation battery learn applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL95520HRW-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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog power management, and embedded solutions for automotive, industrial, and computing markets.
The ISL95520HRW-T belongs to Renesas' high-precision battery charger product line, designed specifically for Intel-platform notebooks requiring PSYS-compliant Turbo mode, dual-source power arbitration, and robust thermal/safety management.
FAQ
What is the primary function of the ISL95520HRW-T in a laptop power system?
The ISL95520HRW-T serves as a configurable dual-mode battery charger IC that manages power arbitration between AC adapter and multi-cell Li-ion battery. It enables system Turbo mode by dynamically combining adapter and battery current to meet peak CPU/GPU loads, supporting both Hybrid Power Boost (HPB) and Narrow VDC (NVDC) topologies per Intel platform requirements.
Does the ISL95520HRW-T support Intel PROCHOT# and PSYS specifications?
Yes, the ISL95520HRW-T natively supports Intel PROCHOT# signaling and PSYS compliance. Its dedicated PROCHOT# pin asserts on adapter overcurrent, battery overcurrent, or system bus undervoltage events, and its hardware current monitors meet Intel's PSYS timing and accuracy requirements for Turbo mode power delivery in certified platforms.
How does the R3™ modulation scheme in the ISL95520HRW-T improve system performance?
The Renesas patented R3™ modulation in the ISL95520HRW-T delivers superior light-load efficiency (>85% at 10 mA) and ultra-fast dynamic response (<10 µs load-step recovery). This ensures stable VSYS regulation during sudden CPU burst loads, preventing throttling and maintaining system responsiveness in high-performance laptop applications.
Can the ISL95520HRW-T operate with different battery configurations?
Yes, the ISL95520HRW-T supports 2-, 3-, and 4-cell Li-ion battery packs. Its programmable parameters-including charge voltage, current limits, and Turbo mode thresholds-are configured via SMBus to match the specific cell count, chemistry, and system power requirements of each platform.
What package type and thermal characteristics does the ISL95520HRW-T use?
The ISL95520HRW-T is packaged in a 32-pin 4×4 mm² QFN with exposed thermal pad. This package provides low junction-to-board thermal resistance (θJB ≈ 12°C/W), enabling reliable operation at up to 8 A continuous battery charge/discharge current in thermally constrained laptop motherboard environments.
ISL95520HRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- R3™
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 2 ~ 4
- Current - Charging:
- -
- Programmable Features:
- -
- Fault Protection:
- Over Current
- Charge Current - Max:
- -
- Battery Pack Voltage:
- -
- Voltage - Supply (Max):
- 25V
- Interface:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL95520HRZ-T FAQ
1.How can I place an order for ISL95520HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95520HRZ-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 ISL95520HRZ-T reliable?
The price and inventory of ISL95520HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95520HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL95520HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95520HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95520HRZ-T?
ISL95520HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95520HRZ-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 ISL95520HRZ-T?
For technical support, including ISL95520HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95520HRZ-T requirements.
6.How does Aetrix verify that ISL95520HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95520HRZ-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 ISL95520HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL95520HRZ-T?
All ISL95520HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95520HRZ-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 ISL95520HRZ-T part is unused and in its original packaging.
Return procedure for ISL95520HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL95520HRZ-T Tags
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