Renesas Electronics

ISL99125B - 25A DrMOS Power Module | Renesas

부품 번호: ISL99125B ✓ 활성
재고 있음 영업일 기준 1~3일 내 발송
25 A Id 24-QFN Package
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MOQ: 1 |
가격 업데이트: 2026-10-21
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ISL99125B 개요

The Renesas ISL99125B is a 25A DrMOS power module with integrated high-side and low-side MOSFETs, a high-performance FET driver, and diode emulation in a 24-QFN package measuring 3.5 mm by 5 mm. It is designed for high-frequency, high-density DC/DC power conversion, combining a power stage and driver in one package to reduce external component count and simplify converter layout. The verified listing identifies the device as an ISL99125B 25A/35A DrMOS family device and describes it as suitable for high-frequency power conversion.

A DrMOS module is an intelligent power semiconductor stage that combines a MOSFET power stage with its driver. In a synchronous buck or similar converter, the module switches the input rail into a controlled energy-transfer path while its internal driver supplies gate-drive voltage and timing. Diode emulation allows the low-side conduction behavior to be controlled to reduce reverse-recovery effects and improve conversion efficiency. This integration can shorten the critical power loop and make compact converter designs more practical than discrete driver-plus-MOSFET implementations.

The ISL99125B family description highlights high-performance DrMOS operation for high-density DC/DC converters. The verified product-page snippet does not provide complete electrical tables, switching-frequency limits, voltage ratings, thermal-resistance values, or monitor accuracy, so those parameters are not inferred here. Engineers should use the official Renesas datasheet for exact limits, recommended operating conditions, pin functions, exposed-pad requirements, and application-specific derating.

Typical uses include CPU and GPU point-of-load converters, server power rails, telecom and networking equipment, high-current industrial modules, notebook power systems, and other compact synchronous converters. The module is especially relevant when the PCB area available for discrete MOSFETs is limited and the converter requires high switching performance. The integrated current and temperature-monitor feature described in the verified results can support system telemetry, protection, and power management when configured according to the datasheet.

For layout, place power connections and decoupling according to the Renesas datasheet and keep the high-current loop as compact as practical. Validate junction temperature, current capability, gate-drive settings, dead time, switching-node overshoot, and output ripple in the final converter rather than relying on nominal current ratings alone. The package also requires attention to exposed-pad soldering and thermal via or copper design for repeatable performance.

This page combines the verified Renesas product description, manufacturer datasheet link, distributor package identification, and cross-reference research. It is intended to help engineers locate the correct documentation and understand the module class without filling missing electrical values with assumptions.

드롭인 대체품: ISL99125B — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: ISL99125B (동일 폼 팩터 및 풋프린트) — 차이점: Package, Rated Current.

Renesas Electronics
Package: 24-terminal QFN
Rated Current: 25A/35A
비교 대상: ISL99125B →

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ISL99135B

✅ 드롭인
Renesas Electronics
📦 24-QFN (3.5x5)
DrMOS power module · 25A/35A · 4.75 V · 5.25 V · 5 V · 4.75 V to 5.25 V · High-performance FET driver and MOSFETs · Integrated Schottky bootstrap diode

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ISL99125B 최대 정격 & 전기적 특성

Product Type DrMOS power module
Rated Current 25 A
Family Description 25A/35A DrMOS module
Power Stage Integrated high-side and low-side MOSFETs
Driver Integrated high-performance FET driver
Diode Emulation Supported
Power Conversion High-frequency DC/DC conversion
Current Monitor Integrated high-accuracy current monitor
Temperature Monitor Integrated temperature monitor
패키지 24-QFN
Package Dimensions 3.5 mm x 5 mm
실장 유형 Surface Mount
Power Module Topology Synchronous switching power stage
Application Class High-density DC/DC converters
Manufacturer Document ISL99125B, ISL99135B datasheet
Document File Size 520 Kbytes
Document Page Count 13 pages

ISL99125B 3.5 mm x 5 mm 핀 구성 가이드

ISL99125B(3.5 mm x 5 mm 패키지)의 핀 구성입니다. 이 전력 소자는 게이트, 드레인, 소스 단자를 갖추고 있습니다. 비편향 패키지의 경우 정확한 핀 1 방향과 풋프린트 세부 정보는 제조사 데이터시트를 참조하십시오. 일반적인 응용 분야로는 전원 공급 장치 설계, 모터 구동, 부하 스위칭이 있습니다.

ISL99125B의 3.5 mm x 5 mm 패키지 핀아웃 다이어그램

다음에 대한 상세 핀아웃 데이터 없음: ISL99125B.

다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.

일반적인 애플리케이션

ISL99125B 적합 용도: 6 애플리케이션s: CPU and GPU Point-of-Load Converters, Server and Networking Power Rails, High-Current Industrial DC/DC Modules, Notebook and Portable Computing Power, Telecom and RF-System Power Conversion, Telemetric and Adaptive Power Control.

💻

CPU and GPU Point-of-Load Converters

The ISL99125B fits compact point-of-load converters where the power stage must deliver high current while minimizing PCB area. Its verified 25A/35A DrMOS family positioning and integrated driver/MOSFET architecture can reduce the number of discrete power components near the controller. The design should use the Renesas recommended layout, validate switching-node behavior, and derate current for package temperature and copper cooling.

🌐

Server and Networking Power Rails

High-density server, switch, and networking power systems can use the ISL99125B as a synchronous DC/DC power stage. The module combines MOSFETs and driver circuitry in a 3.5 mm by 5 mm 24-QFN package, which supports compact converter layouts. Integrated current and temperature monitoring may assist telemetry and protection, although exact monitor limits and threshold behavior must be obtained from the official datasheet.

🏭

High-Current Industrial DC/DC Modules

The ISL99125B is relevant to industrial power modules that require a compact, integrated switching stage for high-frequency conversion. Its DrMOS architecture can reduce external driver and MOSFET count, while the verified 25A/35A family rating provides a basis for initial power-stage selection. Industrial designs must still verify voltage limits, ambient temperature, isolation, protection, and thermal performance in the finished enclosure.

📱

Notebook and Portable Computing Power

A notebook power converter can benefit from the ISL99125B when board area is constrained and the converter requires a local synchronous power stage. The integrated driver and MOSFET arrangement can simplify routing compared with a discrete implementation. Designers should account for transient load response, inductor selection, switching-node losses, exposed-pad soldering, and the module's exact current and thermal limits from the datasheet.

📡

Telecom and RF-System Power Conversion

Telecom equipment and RF-system power rails often require efficient, compact DC/DC stages with careful attention to switching noise and layout. The ISL99125B's integrated DrMOS package can support high-frequency converter designs, while current and temperature monitoring can contribute to system supervision. RF-adjacent designs should minimize high-current loop area, control switch-node dv/dt, and validate conducted and radiated EMI in the final system.

🧩

Telemetric and Adaptive Power Control

The verified ISL99125B description includes integrated high-accuracy current and temperature monitors, making the module relevant to telemetry and adaptive power-control designs. Those monitor functions can feed a controller or system supervisor when the electrical characteristics and calibration requirements are understood. They should not replace independent protection; designers still need overcurrent, undervoltage, overvoltage, and thermal safeguards appropriate to the converter.

What is the Renesas ISL99125B?
The Renesas ISL99125B is a 25A DrMOS power module that integrates a high-performance FET driver with MOSFETs in a 24-QFN package. According to the Renesas product-page description, it is designed for high-frequency power conversion and high-density DC/DC converters. The integrated power stage reduces the number of discrete driver and MOSFET components required in a converter.
What are the key specifications of ISL99125B?
The verified specifications identify ISL99125B as a 25A/35A-family DrMOS module with diode emulation, integrated current and temperature monitors, and a 24-QFN package measuring 3.5 mm by 5 mm. The manufacturer also describes it as a high-performance module for high-frequency DC/DC conversion. Exact voltage, switching-frequency, and thermal limits must be taken from the official Renesas datasheet.
Where can I download the ISL99125B datasheet PDF?
The official Renesas datasheet page is the preferred source for the ISL99125B PDF and companion ISL99135B data. The verified listing identifies the document as the ISL99125B, ISL99135B datasheet and describes it as a 25A/35A DrMOS module document. Use the manufacturer link for electrical tables, pin functions, application circuits, and package recommendations.
Where can I find the ISL99125B pinout?
The ISL99125B pinout is documented in the official Renesas datasheet and should be used rather than third-party pinout drawings. The verified distributor result identifies the device as a 24-QFN DrMOS package in a 3.5 mm by 5 mm outline. The package diagram key used here is qfn-24, but individual pin names and exposed-pad details remain [DATA_NEEDED: complete manufacturer pinout] until verified from the datasheet.
Is ISL99125B suitable for high-current DC/DC converters?
Yes, the ISL99125B is positioned for high-current, high-density DC/DC conversion. Its verified family rating is 25A/35A, and its integrated driver and MOSFET power stage are intended to reduce external switching-component count. Actual suitability depends on input voltage, switching frequency, thermal conditions, layout, and the current derating requirements in the datasheet.
What does diode emulation do in the ISL99125B?
Diode emulation controls the low-side MOSFET behavior during the power-transfer cycle so the converter can approximate synchronous rectification while managing body-diode conduction. The verified Renesas description explicitly identifies diode emulation as a feature of the ISL99125B. The exact implementation, timing limits, and efficiency trade-offs should be confirmed in the manufacturer datasheet and application circuit.
Can the ISL99125B current monitor be used for system protection?
The verified product information identifies an integrated high-accuracy current monitor and an integrated temperature monitor in the ISL99125B family. These functions can support telemetry, current balancing, fault detection, thermal management, or converter control when the external circuitry and calibration are designed according to the datasheet. The monitor thresholds, accuracy, filtering, and fault response require detailed electrical specifications.
Is ISL99125B a discrete MOSFET or an integrated power module?
ISL99125B is an integrated DrMOS power module rather than a standalone discrete MOSFET. It combines the power MOSFETs with a high-performance FET driver in one 24-QFN package. This integration can reduce board area and gate-drive complexity, but the converter still needs appropriate layout, thermal design, input/output capacitors, and protection.
How does ISL99125B compare with ISL99135B?
ISL99125B and ISL99135B are presented together in the verified Renesas datasheet as members of a 25A/35A DrMOS module family. The verified material does not provide a complete parameter-by-parameter comparison, so voltage, current, package, and feature differences should not be assumed. Use the official datasheet to determine which member matches the required output current and converter requirements.
What is the best drop-in replacement for ISL99125B?
No verified drop-in replacement for ISL99125B was found in the supplied cross-reference data. A drop-in replacement must match the exact 24-QFN footprint, pin functions, voltage ratings, switching characteristics, current capability, and thermal requirements; a merely similar DrMOS module is not sufficient. The Renesas ISL99135B is a family-related candidate for evaluation, but the verified data does not establish pin-to-pin compatibility or equivalence.
Can ISL99135B replace ISL99125B?
ISL99135B cannot be treated as a confirmed drop-in replacement for ISL99125B from the supplied evidence. Both are named in the same Renesas datasheet and are associated with the 25A/35A DrMOS family, but the available results do not provide a verified pinout match, electrical comparison, or manufacturer cross-reference. Validate the replacement against the complete datasheet and application requirements.
When should I choose ISL99125B over a discrete MOSFET solution?
Choose ISL99125B when a converter benefits from an integrated MOSFET-and-driver power stage and limited PCB area. The verified Renesas description supports its use in high-frequency, high-density DC/DC converters. A discrete solution may be preferable when the design requires independently selected MOSFETs, unusual voltage ratings, lower switching frequency, or a thermal arrangement that has already been validated.
What layout practices are important for ISL99125B?
Use the official Renesas datasheet layout guidance and keep the high-current switching loop as short and compact as practical. Follow the specified power-pin connections, exposed-pad solder pattern, thermal vias or copper treatment, input/output capacitor placement, and gate-related routing. Incorrect high-current or high-dv/dt layout can increase switching loss, overshoot, EMI, and junction temperature even when the nominal current rating appears adequate.
What is the ISL99125B price?
The supplied verified data does not include a current distributor price for ISL99125B. The available DigiKey result confirms the orderable ISL99125BDRZ-T listing in 24-QFN packaging, but it does not provide a price value in the supplied snippet. Current price must therefore be checked at the distributor or through a quotation rather than inferred.
Is ISL99125B in stock and what is its lead time?
The supplied verified data does not explicitly state ISL99125B inventory or a lead time. The DigiKey snippet says the part can be ordered and includes an availability reference, but that is not enough to claim in-stock status or a specific delivery interval. Check the live distributor listing for current stock, lifecycle status, and lead time before committing a production schedule.
What certifications or compliance status does ISL99125B have?
RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status are not stated in the supplied verified data. These fields are therefore unknown rather than assumed. For a production release, review the current Renesas product documentation, declarations, and distributor compliance records for the exact package and ordering code.

엔지니어링 참조 데이터: ISL99125B — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose ISL99125B when designing a compact, high-frequency synchronous DC/DC converter that benefits from an integrated MOSFET-and-driver power stage. The verified 25A/35A family positioning, diode-emulation feature, and integrated current and temperature monitoring make it a strong candidate for point-of-load, server, networking, industrial, and portable-computing power systems. Select ISL99135B only after comparing its exact electrical limits, pinout, monitor behavior, and thermal data with the ISL99125B design; the supplied sources do not prove drop-in equivalence. A discrete MOSFET design may be preferable when the application already has a validated driver, requires separately selected MOSFET characteristics, or has unusual voltage, switching, or isolation requirements. In every case, verify the official datasheet, package land pattern, exposed-pad soldering, current derating, switching-node behavior, and converter stability before production release.

대체품과의 비교

파라미터 이 제품 ISL99135B
Product Type 25A/35A DrMOS power module 25A/35A DrMOS power module
Brand Renesas Electronics Renesas Electronics
Integrated Driver Yes Yes
Integrated MOSFETs Yes Yes
Diode Emulation Supported Supported

주요 차별점

  • Integrated DrMOS architecture (vs ISL99135B)
  • Package integration (vs Discrete MOSFET plus driver solution)
  • Monitoring capability (vs Discrete MOSFET solution)

설계 노트

Use the Renesas datasheet layout as the authority for power-pin placement, exposed-pad treatment, input/output capacitors, and gate-related connections. Keep the high-current switching loop short and compact to reduce parasitic inductance and switching loss. Verify that the 3.5 mm by 5 mm 24-QFN package has adequate solder-joint formation and that the exposed pad is connected according to the recommended land pattern.

The verified data does not provide thermal resistance or safe-operating-area curves, so these must be obtained from the official datasheet before estimating allowed dissipation. In the finished PCB, provide substantial copper around the exposed pad, use the recommended thermal-via arrangement, and measure junction temperature under worst-case input voltage, switching frequency, load, and ambient conditions. Do not treat the 25A family rating as a guaranteed board-level continuous-current limit.

Validate converter startup, dead time, diode-emulation behavior, peak switch current, output ripple, and current-monitor calibration in the final control loop. Place input capacitors close to the power-stage connections and follow the datasheet's recommendations for output capacitance and loop compensation. Because exact voltage and frequency limits are not present in the supplied data, do not select the inductor, capacitors, or switching frequency from assumptions.

A family-related part such as ISL99135B is not automatically a drop-in replacement for ISL99125B. Confirm pin names, exposed-pad connections, voltage rating, switching limits, monitor behavior, thermal performance, and ordering code before substitution. Also confirm the manufacturer lifecycle status and current distributor inventory rather than relying on a generic search-result description.

규정 준수 정보

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
무연
Unknown
무할로겐
Unknown
분쟁 광물
Unknown

The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown.

관련 검색

ISL99125B datasheet Renesas ISL99125B ISL99125B 25A DrMOS ISL99125B 24-QFN ISL99125B high-frequency DC/DC converter ISL99125B vs ISL99135B ISL99125B drop-in replacement buy ISL99125B online ISL99125B price ISL99125B pinout

관련 부품 & 용어

Renesas Electronics ISL99125B ISL99135B DrMOS power module synchronous converter DC/DC converter MOSFET FET driver diode emulation current monitor temperature monitor 24-QFN QFN package 3.5 mm by 5 mm package power conversion high-frequency switching exposed pad thermal management current telemetry point-of-load converter server power rail industrial power module EMI control
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