ISL68137IRAZ - Digital 7-Phase PWM Controller | Renesas
Référence : ISL68137IRAZ ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.78 | $57,80 |
| 100 | $4.65 | $465,00 |
| 500 | $3.92 | $1 960,00 |
| 1 000 | $3.27 | $3 270,00 |
ISL68137IRAZ Présentation
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.
Alternatives de remplacement direct pour ISL68137IRAZ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ISL68137IRAZ (même facteur de forme et même empreinte) — différant par Operating Temperature Range, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ISL68137IRAZ-T
✅ Remplacement direct✓ En stock
$3.2738 / unité
Voir la fiche technique →ISL68137IRAZ-TR5781
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ISL68137IRAZ Valeurs maximales et caractéristiques électriques
| Topologie | Digital multiphase PWM controller (X+Y ≤ 7 phases) |
| Nombre de sorties | 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 |
| Plage de température de fonctionnement | -40C to +85C |
| Boîtier | 48-lead QFN (6x6 mm) with exposed pad |
| Package Drawing | L48.6x6B |
| Type de montage | Surface Mount |
| RoHS Compliance | Pb-free, RoHS compliant |
| Reel Options | -T (4k), -T7A (250), -TR5781 (custom) |
Guide de configuration des broches du ISL68137IRAZ l48.6x6b
Configuration des broches du ISL68137IRAZ (boîtier l48.6x6b). Ce composant de puissance comporte des bornes de grille, de drain et de source. Pour les boîtiers non polarisés, consultez la fiche technique du fabricant pour l'orientation exacte de la broche 1 et les détails de l'empreinte. Les applications courantes incluent la conception d'alimentations, la commande de moteurs et la commutation de charges.
Aucune donnée de brochage détaillée disponible pour ISL68137IRAZ.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ISL68137IRAZ convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ISL68137IRAZ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- AVSBus adaptive voltage scaling (vs ISL68127IRCZ (earlier Renesas controller))
- Dual-output configurability with single BOM line (vs ISL68134 (single-loop variant))
- Pin-strap NVM configuration (vs Competitor controllers requiring firmware upload)
Notes de conception
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%.
Informations de conformité
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.
