LTM4650MPY#PBF - Dual 25A/50A DC/DC μModule | Analog Devices
MPN: LTM4650MPY#PBF ✓ AktifLTM4650MPY#PBF Genel Bakış
A DC/DC converter is an electronic circuit that converts a source of direct current (DC) from one voltage level to another. The LTM4650 is a step-down (buck) converter, which reduces a higher input voltage to a lower output voltage. As a μModule, it integrates the inductor and power stage into a single package, reducing design complexity and board space compared to discrete solutions. This module falls under the category of power management ICs, specifically non-isolated point-of-load (PoL) converters.
Key features include dual 25A or single 50A output capability, high efficiency, and remote output voltage sensing for improved regulation at the load point. The module supports output voltage tracking and sequencing through the TRACK/SS pin, enabling controlled power-up in multi-rail systems. It also includes overcurrent and overtemperature protection, ensuring reliable operation under fault conditions.
The LTM4650 uses a constant frequency current mode architecture, providing fast transient response and stable operation with ceramic output capacitors. The integrated inductors and power FETs are optimized for low loss, achieving efficiencies up to 90% at full load. The module's thermal performance is enhanced by its exposed pad package, which allows efficient heat transfer to the PCB.
Typical applications include high-current FPGA, ASIC, and processor power supplies, where multiple low-voltage rails are required. It is also used in telecom and networking equipment, industrial systems, and military/aerospace electronics. The wide input range and high output current make it ideal for powering core voltages in advanced digital systems.
When designing with the LTM4650, ensure adequate input and output capacitance for stability and transient performance. The TRACK/SS pin allows soft-start and sequencing, which is critical for systems with strict power-up requirements. Thermal management is essential at high output currents; use a multi-layer PCB with thermal vias to dissipate heat effectively.
Drop-in alternatifler için LTM4650MPY#PBF — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller LTM4650MPY#PBF (aynı form faktörü ve ayağa oturma) — farklı olan Output Type, Package, Input Voltage Range, Number of Outputs, Output Voltage Range.
LTM4650IY#PBF
✅ YerleştirmeFiyat için iletişime geçin
Veri Şablonunu Görüntüle →LTM4650EV#PBF
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
LTM4630AEY#PBF
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
LTM4620AEY#PBF
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
LTM4644EY#PBF
✅ Yerleştirme ⚠️ Onaylanmamış ÖzelliklerFiyat için iletişime geçin
Veri Şablonunu Görüntüle →LTM4650MPY#PBF Maksimum Değerlendirmeler & Elektriksel Özellikler
| Çıkış Türü | Dual |
| Çıkış Gerilimi Aralığı | 0.6 V to 1.8 V (each output) |
| Output Current | 25 A per output, 50 A single output |
| Giriş电压范围 | 4.5 V to 15 V |
| İşletim Sıcaklığı Aralığı | -55°C to +125°C |
| Paket | LGA (16mm x 16mm) |
| Montaj Türü | Surface Mount |
| Çıkış Sayısı | 2 |
| Isolation | Non-Isolated |
| Kontrol Özellikleri | TRACK/SS pin, remote sense |
| Protection | Overcurrent, overtemperature |
| RoHS Durumu | Compliant |
LTM4650MPY#PBF Pin Yapısı
| Pin 1 | VIN — Input voltage |
| Pin 2 | VOUT1 — Output 1 |
| Pin 3 | VOUT2 — Output 2 |
| Pin 4 | GND — Ground |
| Pin 5 | TRACK/SS — Tracking and soft-start |
| Pin 6 | RUN — Enable |
| Pin 7 | SENSE1+ — Remote sense positive for output 1 |
| Pin 8 | SENSE1- — Remote sense negative for output 1 |
| Pin 9 | SENSE2+ — Remote sense positive for output 2 |
| Pin 10 | SENSE2- — Remote sense negative for output 2 |
Tipik Uygulamalar
LTM4650MPY#PBF için uygundur 6 uygulamas: FPGA Power Supplies, ASIC Power Supplies, Telecom and Networking Equipment, Industrial Systems, Military and Aerospace Electronics, Data Center and Cloud Computing.
FPGA Power Supplies
The LTM4650MPY#PBF provides dual 25A outputs with adjustable 0.6V to 1.8V, ideal for powering FPGA core and I/O rails. Its high efficiency and low ripple ensure stable operation for high-performance FPGAs. The TRACK/SS pin enables proper sequencing for multi-rail requirements, and remote sense improves regulation at the load point.
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ASIC Power Supplies
For ASICs requiring high current at low voltages, the LTM4650MPY#PBF delivers up to 50A single output. Its wide input range (4.5V to 15V) accommodates various bus voltages. The integrated inductors and MOSFETs reduce design complexity, and the military temperature range ensures reliability in demanding environments.
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Telecom and Networking Equipment
In telecom systems, the LTM4650MPY#PBF powers line cards and switches with high efficiency. Its dual outputs can supply separate rails for logic and I/O. The module's compact LGA package saves board space, and its thermal performance supports continuous operation in confined enclosures.
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Industrial Systems
The LTM4650MPY#PBF is suitable for industrial automation and control systems requiring robust power delivery. Its -55°C to +125°C temperature range exceeds industrial requirements, providing margin. The module's protection features (overcurrent, overtemperature) enhance system reliability in harsh factory environments.
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Military and Aerospace Electronics
With its military temperature range, the LTM4650MPY#PBF is designed for defense and aerospace applications. It can power radar, avionics, and communication systems where extreme temperatures are common. The high output current supports demanding loads, and the integrated design reduces size and weight.
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Data Center and Cloud Computing
In data centers, the LTM4650MPY#PBF powers high-performance processors and memory. Its high efficiency reduces cooling requirements, and the dual outputs can supply separate voltage domains. The module's remote sense ensures accurate voltage at the load, critical for high-current applications.
Önerilen
Önerilen Ürünler Özeti
Mühendislik referans verileri: LTM4650MPY#PBF — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | LTM4650IY#PBF | LTM4650EV#PBF | LTM4630AEY#PBF |
|---|---|---|---|---|
| Package | LGA (16mm x 16mm) | LGA (16mm x 16mm) | LGA (16mm x 16mm) | LGA (16mm x 16mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current (per output) | 25A | 25A | 25A | 18A |
| Output Voltage Range | 0.6V to 1.8V | 0.6V to 1.8V | 0.6V to 1.8V | 0.6V to 1.8V |
| Input Voltage Range | 4.5V to 15V | 4.5V to 15V | 4.5V to 15V | 4.5V to 15V |
| Operating Temperature Range | -55°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Number of Outputs | 2 | 2 | 2 | 2 |
| TRACK/SS Pin | Yes | Yes | Yes | Yes |
Ana Farklılayıcılar
- Military temperature range (-55°C to +125°C) (karşılaştırma:LTM4650IY#PBF)
- Higher output current (25A per output) compared to LTM4630AEY#PBF (karşılaştırma:LTM4630AEY#PBF)
- Integrated inductors and power stage (karşılaştırma:Discrete buck converter solutions)
Tasarım Notları
At 50A output, the LTM4650MPY#PBF dissipates significant power. Use a multi-layer PCB with thermal vias under the exposed pad to conduct heat to inner and bottom layers. Ensure adequate copper area for heat spreading. The military temperature rating allows operation up to +125°C case temperature, but derating may be required at high ambient temperatures.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors for high-frequency decoupling. The datasheet recommends a specific capacitor configuration for stability; follow the typical application circuit. For remote sense, route sense lines as a differential pair to avoid noise pickup.
Do not exceed the absolute maximum input voltage of 16V. Ensure the TRACK/SS pin is properly connected for soft-start; leaving it floating may cause uncontrolled startup. When paralleling outputs for 50A, ensure proper current sharing by following the datasheet's parallel configuration. Verify output voltage accuracy with 1% resistors.
Uyumluluk Bilgisi
RoHS compliant per '#PBF' suffix. Military grade, not AEC-Q100 qualified.
