ISL68137IRAZ - Digital 7-Phase PWM Controller | Renesas
MPN: ISL68137IRAZ ✓ AktifISL68137IRAZ Genel Bakış
A digital multiphase PWM controller is a power-management IC that drives multiple buck-converter phases in parallel to deliver high currents (>100 A) with fast transient response, dynamic phase adding/dropping, and per-loop digital compensation. The ISL68137 belongs to the voltage regulator controller family, specifically the multiphase PWM controller category, sitting above power-stage DrMOS/MOSFETs and below the system PMBus master in the power tree hierarchy.
Key features include on-chip nonvolatile memory for storing user-selected configuration via pin-strap, automatic phase add/drop for efficiency across load ranges, AVSBus adaptive voltage scaling, full PMBus 1.3.1 command set, and ±0.5% output voltage accuracy across line, load, and temperature. The -40C to +85C industrial operating range supports datacom, telecom, and high-performance computing platforms.
Architecturally, the device pairs a digital core with mixed-signal PWM modulators and per-loop PID compensation, allowing firmware-free, pin-strap configuration while preserving digital telemetry and fault logging. The 6x6 mm QFN-48 footprint with exposed pad provides low thermal resistance for high-phase-count designs where controller dissipation matters.
Typical applications include server core/CPU VRs, DDR memory VRs, GPU and ASIC rails, networking switch PCIe/SoC rails, and industrial high-current POL converters. In any rail where >80 A is needed with adaptive voltage scaling, the ISL68137 is a strong candidate.
Designers should plan for 4-layer or higher PCB stack-ups with adequate via arrays under the exposed pad, a dedicated 3.3 V bias rail for VCC, and PMBus pull-ups per the SMBus specification. Verify phase-current-sense resistor selection before committing layout.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatifler için ISL68137IRAZ — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller ISL68137IRAZ (aynı form faktörü ve ayağa oturma) — farklı olan Operating Temperature Range, Package.
ISL68137IRAZ-T
✅ YerleştirmeFiyat için iletişime geçin
Veri Şablonunu Görüntüle →ISL68137IRAZ-TR5781
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
ISL68137IRAZ Maksimum Değerlendirmeler & Elektriksel Özellikler
| Ağ Yapısı | Digital multiphase PWM controller (X+Y ≤ 7 phases) |
| Çıkış Sayısı | 2 (configurable) |
| Maximum Total Phases | 7 (e.g. 6+1, 5+2, 4+2, 3+3, 3+2, 7+0) |
| Digital Interface | PMBus 1.3.1 + AVSBus |
| Adaptive Voltage Scaling | Yes (AVSBus) |
| Output Voltage Accuracy | ±0.5% across line/load/temperature |
| On-chip Nonvolatile Memory | Yes (pin-strap configurable) |
| Phase Add/Drop | Automatic |
| İşletim Sıcaklığı Aralığı | -40C to +85C |
| Paket | 48-lead QFN (6x6 mm) with exposed pad |
| Package Drawing | L48.6x6B |
| Montaj Türü | Surface Mount |
| RoHS Compliance | Pb-free, RoHS compliant |
| Reel Options | -T (4k), -T7A (250), -TR5781 (custom) |
ISL68137IRAZ l48.6x6b Pin Yapısı Kılavuzu
ISL68137IRAZ (l48.6x6b paket) için pin yapısı. Bu güç cihazı gate, drain ve kaynak terminal özelliklerlidir. Polarizasyonlu paketler için, doğru pin 1 yönlendirme ve ayak detayları için üretici veri kitapçığını referans alın. Orta uygulamalar arasında güç besleme tasarımı, motor kontrolü ve yük değiştirme bulunur.
Ayrıntılı pin çıkış verisi mevcut değil: ISL68137IRAZ.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
ISL68137IRAZ için uygundur 7 uygulamas: Server CPU/Core Voltage Regulator, DDR4/DDR5 Memory VR, GPU/ASIC Power Rails, Networking Switch SoC/PCIe Rails, Industrial High-Current POL Converters, Datacenter Telemetry and Power Management, Telecom Base Station Power.
Server CPU/Core Voltage Regulator
The ISL68137IRAZ drives 6+1 or 7+0 multiphase buck configurations to power server CPU cores up to 200 A+. Its ±0.5% output accuracy and AVSBus interface enable precise VID transitions for Intel/AMD power-state changes, while automatic phase add/drop optimizes light-load efficiency. Renesas reference designs pair the ISL68137 with DrMOS stages for 80-200 A server rails. PMBus 1.3.1 telemetry allows real-time monitoring of current, voltage, and temperature for datacenter management.
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DDR4/DDR5 Memory VR
In 3+3 or 4+2 phase configurations, the ISL68137IRAZ powers DDR memory rails with tight voltage regulation (±0.5%) and fast transient response required by DDR5 spec. The AVSBus interface supports dynamic voltage scaling during self-refresh and write-levelling training. The exposed thermal pad and 6x6 mm footprint fit comfortably under memory DIMM areas on server motherboards. Pin-strap NVM lets OEMs configure memory and core rails with one BOM line.
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GPU/ASIC Power Rails
The ISL68137IRAZ supports 5+2 and 6+1 configurations ideal for high-current GPU and AI ASIC rails. AVSBus adaptive voltage scaling matches aggressive workload-dependent VID profiles for inference accelerators, while PMBus provides per-rail telemetry to BMC/host. The 7-phase total headroom lets one controller drive both GPU core and HBM stacks. Designers pair the ISL68137 with high-current DrMOS stages rated 60 A+ each.
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Networking Switch SoC/PCIe Rails
In 4+2 or 3+3 mode, the ISL68137IRAZ powers switch SoCs and PCIe Gen5 PHYs in 48-port switches and routers. Its industrial -40C to +85C temperature range supports outdoor and NEBS-compliant telecom environments, while PMBus telemetry integrates with switch BMCs. The exposed pad and 48-QFN footprint fits high-density switch PCB designs where space under the SoC is at a premium.
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Industrial High-Current POL Converters
For industrial PLCs, test equipment, and factory automation, the ISL68137IRAZ delivers >100 A rails with PMBus programmability and pin-strap configuration that simplifies BOM across product variants. The -40C to +85C industrial range, RoHS compliance, and exposed thermal pad enable fan-less designs. Automatic phase add/drop optimizes efficiency across varying industrial load profiles from standby to peak.
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Datacenter Telemetry and Power Management
In datacenter server platforms, the ISL68137IRAZ reports per-rail voltage, current, temperature, and fault status over PMBus 1.3.1 to the BMC for closed-loop power capping and workload balancing. AVSBus provides faster than PMBus VID transitions for fast-sleep CPU states, improving overall datacenter PUE. Renesas pin-strap NVM lets OEMs ship one controller across multiple SKUs (1P, 2P, 4P) without firmware changes.
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Telecom Base Station Power
In 5G base station BBU and radio units, the ISL68137IRAZ powers DSP, FPGA, and SoC rails with the -40C to +85C industrial operating range required by NEBS. AVSBus supports fast dynamic voltage scaling for traffic-burst-dependent load profiles, while PMBus telemetry integrates with telecom-element management systems. The exposed-pad QFN package provides thermal headroom in sealed outdoor enclosures.
Önerilen
Önerilen Ürünler Özeti
Mühendislik referans verileri: ISL68137IRAZ — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | ISL68137IRAZ-T | ISL68137IRAZ-TR5781 |
|---|---|---|---|
| Package | 48-QFN (6x6 mm) - L48.6x6B | 48-QFN (6x6 mm) - L48.6x6B - same | 48-QFN (6x6 mm) - L48.6x6B - same |
| Brand | Renesas Electronics | Renesas Electronics - same | Renesas Electronics - same |
| Topology | Dual output, X+Y ≤ 7 phases | Dual output, X+Y ≤ 7 phases - same | Dual output, X+Y ≤ 7 phases - same |
| Digital Interface | PMBus 1.3.1 + AVSBus | PMBus 1.3.1 + AVSBus - same | PMBus 1.3.1 + AVSBus - same |
| Output Voltage Accuracy | ±0.5% | ±0.5% - same | ±0.5% - same |
| On-chip NVM | Yes (pin-strap configurable) | Yes - same | Yes - same |
| Operating Temperature | -40C to +85C | -40C to +85C - same | -40C to +85C - same |
| Packaging Format | Bulk | Tape & Reel (4,000) | Custom Reel (TR5781) |
| RoHS Compliance | Pb-free, RoHS compliant | Pb-free, RoHS compliant - same | Pb-free, RoHS compliant - same |
Ana Farklılayıcılar
- AVSBus adaptive voltage scaling (karşılaştırma:ISL68127IRCZ (earlier Renesas controller))
- Dual-output configurability with single BOM line (karşılaştırma:ISL68134 (single-loop variant))
- Pin-strap NVM configuration (karşılaştırma:Competitor controllers requiring firmware upload)
Tasarım Notları
Estimated: The ISL68137IRAZ dissipates up to ~1.5 W when driving 7 phases at 1 MHz switching frequency and 25C ambient. The 48-QFN 6x6 mm exposed pad (per Renesas drawing L48.6x6B) requires a continuous PGND copper plane on the top layer with at least 9 thermal vias (0.3 mm drill, 0.5 mm pitch) connecting to inner PGND layers. Without adequate via arrays, theta_JA can exceed 35 C/W and force thermal derating in dense 7-phase designs.
Route PMBus and AVSBus traces as 50-ohm impedance-controlled differential pairs (SDA/SCL, ASDA/ASCL) with 2 kohm pull-ups to 3.3 V per SMBus specification. Place the ISL68137 at least 25 mm away from switching node edges and current-sense resistors to avoid digital-noise coupling into analog ground. Keep phase PWM traces short and symmetric to minimize timing skew between parallel phases.
Do not populate the ISL68137IRAZ on a layout originally designed for the ISL68127IRCZ without re-validation - the 48-QFN ball map differs between the two families, and PCB re-spin is required. Always verify the pin-strap NVM configuration matches the desired phase count (X+Y ≤ 7) before firmware upload. Failure to enable automatic phase add/drop can degrade light-load efficiency by 15-20%.
Uyumluluk Bilgisi
RoHS Pb-free per Renesas datasheet note 2. Industrial -40C to +85C grade - not AEC-Q100 qualified; AEC-Q100 is not applicable for digital controller ICs in this category.
