LTM4650MPY#PBF - Dual 25A/50A DC/DC μModule | Analog Devices
MPN: LTM4650MPY#PBF ✓ Hoạt độngLTM4650MPY#PBF Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho LTM4650MPY#PBF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LTM4650MPY#PBF (cùng hình factor và footprint) — khác nhau ở Output Type, Package, Input Voltage Range, Number of Outputs, Output Voltage Range.
LTM4650IY#PBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTM4650EV#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTM4630AEY#PBF
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTM4620AEY#PBF
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTM4644EY#PBF
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LTM4650MPY#PBF Tỷ lệ tối đa & tính chất điện
| Kiểu đầu ra | Dual |
| Khoảng điện áp đầu ra | 0.6 V to 1.8 V (each output) |
| Output Current | 25 A per output, 50 A single output |
| Phạm vi điện áp đầu vào | 4.5 V to 15 V |
| Khoảng nhiệt độ hoạt động | -55°C to +125°C |
| Hộp | LGA (16mm x 16mm) |
| Kiểu lắp đặt | Surface Mount |
| Số lượng đầu ra | 2 |
| Isolation | Non-Isolated |
| Tính năng điều khiển | TRACK/SS pin, remote sense |
| Protection | Overcurrent, overtemperature |
| Trạng thái RoHS | Compliant |
Cấu hình chân LTM4650MPY#PBF
| Chân 1 | VIN — Input voltage |
| Chân 2 | VOUT1 — Output 1 |
| Chân 3 | VOUT2 — Output 2 |
| Chân 4 | GND — Ground |
| Chân 5 | TRACK/SS — Tracking and soft-start |
| Chân 6 | RUN — Enable |
| Chân 7 | SENSE1+ — Remote sense positive for output 1 |
| Chân 8 | SENSE1- — Remote sense negative for output 1 |
| Chân 9 | SENSE2+ — Remote sense positive for output 2 |
| Chân 10 | SENSE2- — Remote sense negative for output 2 |
Ứng dụng tiêu biểu
LTM4650MPY#PBF phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTM4650MPY#PBF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Military temperature range (-55°C to +125°C) (vsLTM4650IY#PBF)
- Higher output current (25A per output) compared to LTM4630AEY#PBF (vsLTM4630AEY#PBF)
- Integrated inductors and power stage (vsDiscrete buck converter solutions)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per '#PBF' suffix. Military grade, not AEC-Q100 qualified.
