ISL68137IRAZ - Digital 7-Phase PWM Controller | Renesas
MPN: ISL68137IRAZ ✓ AktifISL68137IRAZ Ringkasan
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.
Pilihan pengganti yang segera untuk ISL68137IRAZ — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera ISL68137IRAZ (sama faktor bentuk dan kaki) — berbeza dalam Operating Temperature Range, Package.
ISL68137IRAZ-T
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →ISL68137IRAZ-TR5781
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
ISL68137IRAZ Penilaian maksimum & Ciri-ciri Elektrik
| Tetstruktur | Digital multiphase PWM controller (X+Y ≤ 7 phases) |
| Bilangan Output | 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 |
| Gambaran Suhu Operasi | -40C to +85C |
| Kemasan | 48-lead QFN (6x6 mm) with exposed pad |
| Package Drawing | L48.6x6B |
| Jenis Pemasangan | Surface Mount |
| RoHS Compliance | Pb-free, RoHS compliant |
| Reel Options | -T (4k), -T7A (250), -TR5781 (custom) |
Panduan Konfigurasi Pin ISL68137IRAZ l48.6x6b
Konfigurasi pin untuk ISL68137IRAZ (l48.6x6b pakai). Peranti kuasa ini mempunyai terminal kawat, buang, dan sumber. Untuk pakai non-polarized, rujuk dokumen pengeluar untuk orientasi pin 1 tepat dan perincian kebentuk.
Tiada data garisan pin yang diperoleh untuk ISL68137IRAZ.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
ISL68137IRAZ patut untuk 7 aplikasis: 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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
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.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk ISL68137IRAZ — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | 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 |
Penyeberangsung Jelas
- AVSBus adaptive voltage scaling (vsISL68127IRCZ (earlier Renesas controller))
- Dual-output configurability with single BOM line (vsISL68134 (single-loop variant))
- Pin-strap NVM configuration (vsCompetitor controllers requiring firmware upload)
Catatan Desain
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%.
Maklumat Kesediaan
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.
