RE4630A: The Rugged Performer for Extreme Environments
RE4630A is an industrial-grade DC/DC power module built to withstand the harshest operating conditions in aerospace, defense, and automotive applications. It features an extended input voltage range (4.5V to 18V) and an extended output voltage range (0.6V to 8V), providing greater design flexibility for systems with varying power sources and component requirements. Operating reliably from -55°C to 125°C, it ensures uninterrupted performance in extreme temperatures. The Pin-to-Pin compatibility with standard modules allows for easy upgrades in existing designs, enhancing system capabilities without requiring a complete redesign.
RE4630A: Wide Output-Voltage Dual Power Engine
The RE4630A is an enhanced iteration of the RE4630, developed to serve broader industrial and communication application scenarios. Retaining the robust dual 18A (combined 36A single rail) output capability, it extends the input voltage range to 4.5V~18V and drastically raises the upper limit of adjustable output voltage to 8V. This distinctive feature enables direct powering of specialty loads unsupported by conventional low-voltage modules, making it widely deployed in high-end storage hardware and complex industrial control systems.
Upholding a fully integrated design philosophy, the 16mm × 16mm × 5.01mm package encapsulates all power-stage circuitry. It achieves exceptional transient response and a maximum total DC output error of ±1.5%, supplying ultra-clean power for precision analog circuits. Integrated soft-start and voltage tracking functions simplify multi-rail power sequencing architecture. As a preferred domestic replacement for the LTM4630A, it delivers expanded voltage configuration flexibility and resilient supply chain advantages without compromising electrical performance.
RE4630A: The Versatile Voltage Solution for Expanded Applications
Unmatched voltage flexibility and rugged performance define the RE4630A DC/DC power module. It integrates all power-stage components within a compact 16×16×5.01mm BGA package, supporting an extended 4.5V~18V input range and delivering dual 18A (or single 36A) outputs with an impressive 0.6V~8V adjustable range. This wide output capability allows it to power a broader range of loads, from low-voltage cores to higher-voltage analog circuits and interfaces. Built-in protection circuits and a robust design ensure reliable operation in challenging conditions.
Meeting industrial wide-temperature standards from -55°C to 125°C, the RE4630A is perfectly suited for aerospace, defense, and automotive applications requiring a versatile power solution. Its support for soft-start and voltage tracking simplifies multi-rail system design. Fully pin-to-pin and BOM compatible with the LTM4630A, it provides a seamless upgrade path, offering designers greater flexibility and a more resilient supply chain without compromising performance or form factor.
Sajet Step-Down Power IC
- Dual 18A or Single 36A Output
- W ide Input Voltage Range: 4.5V to 18V
- Output Voltage Range: 0.6V to 8V
- ±1.5% Maximum Total DC Output ErrorOver Line, Load and Temperature
- Differential Remote Sense Amplifier
- Current Mode Control/Fast TransientResponse
- >Adjustable Switching Frequency
- Overcurrent Foldback Protection
- >Multiphase Parallel with CurrentSharing
- Frequency Synchronization
- Internal Temperature Monitor
- Soft-Start/Voltage Tracking
- Output Overvoltage Protection
- 16mm × 16mm × 5.01mm BGAPackages
RE4630A Dual 18A / Single 36A Wide-Voltage DC/DC Step-Down Power Module
The RE4630A is an integrated dual 18A or single 36A step-down DC/DC regulator integrating switching controllers, power FETs, inductors and all supporting components inside one package. It works with a broad 4.5V–18V input voltage range and offers two independent outputs with adjustable 0.6V–8V output voltage, where each channel’s voltage can be configured with just one external resistor. Its high-efficiency structure provides up to 18A continuous current per output, and only a small number of input and output capacitors are required for peripheral circuits. This power module supports external frequency synchronization, multiphase parallel operation and output voltage tracking for orderly power rail sequencing, alongside an onboard temperature diode to monitor operating temperature in real time. Equipped with high switching frequency and current-mode control architecture, it realizes ultra-fast transient response against line and load fluctuations while maintaining system stability, and incorporates built-in overvoltage and overcurrent protection to avoid equipment failure. The RE4630A achieves complete pin-to-pin and BOM-to-BOM compatibility with LTM4630A, supporting direct replacement and flexible product iteration.
Application Schematic
RE4630A is upgraded from RE4630 with expanded 4.5V~18V input range and wider 0.6V~8V output range, retaining dual 18A / single 36A output capability. Its application circuit layout is highly consistent with RE4630: multi-group 22μF input capacitors stabilize the input voltage, the TEMP pin is reserved for real-time temperature monitoring, and TRACK1/TRACK2 pins realize orderly power supply start-up sequence. The FSET pin uses a 75k resistor for frequency setting, RUN1/RUN2 control two channels independently, and PHASMD configures multi-phase parallel operation. VFB1/VFB2 configure output voltage through external resistors, and each output port is equipped with 100μF+470μF low-ESR composite capacitors to suppress ripple. INTVcc matches a 4.7μF decoupling capacitor, and the shared PGOOD pin realizes unified power-good indication. Differential detection pins DIFFOUT, DIFFP, DIFFN guarantee output voltage precision, suitable for automotive electronics and wide-voltage industrial power supply occasions.
APPLICATION
- Telecom and NetworkingEquipment
- Storage and ATCA Cards
- Industrial Equipment
BGA PACKAGE-TOP VIEW
Simplified Dual-channel BGA Layout (Compact dual-channel version)
Optimized simplified dual-channel BGA footprint based on high-density dual-channel layout, removing redundant auxiliary marking lines while retaining complete dual independent power loop definition. Standard M-A row & 1-12 column coordinate positioning, large continuous GND copper pads on the top and bottom for thermal enhancement.
Equipped with dual enable, dual compensation, dual feedback sampling, phase modulation, PLL synchronization, differential remote sensing, temperature monitoring and system clock pins. Neater wiring area, lower PCB layout difficulty, excellent channel consistency, designed for compact industrial equipment and edge computing dual power modules.
Fields of Application
- Telecom and Networking Equipment:
Designed for 48V telecom systems and microwave radio units. The 4.5V–18V input range accommodates wide fluctuations in central office power, while dual 18A outputs power baseband processors and RF transceivers in outdoor units. High efficiency reduces cooling requirements in sealed enclosures, and overvoltage protection safeguards against lightning-induced surges on long cable runs. - Storage and ATCA Cards:
Powers ruggedized storage arrays for military and aerospace applications. The wide input tolerance handles unstable power from vehicle or aircraft buses, while dual rails independently supply mass storage controllers and encryption engines. Extended temperature operation (-55°C to 125°C) ensures data integrity in extreme environments, from desert deployments to high-altitude surveillance drones. - Industrial Equipment:
Ideal for 24V industrial automation and robotics. The 0.6V–8V output range supports both legacy 5V/3.3V logic and modern low-voltage sensors, simplifying BOMs for PLCs and motor drives. Differential remote sensing maintains accuracy despite voltage drops in long industrial cables, and robust packaging withstands high vibration in robotic arm controllers and CNC machines. - Automotive Test Equipment:
Powers ECU flashing tools and battery simulation rigs. The wide input range mimics automotive battery conditions (cold crank, load dump), while high current capability tests alternators and starter motors under load. Fast transient response captures voltage spikes during relay switching, ensuring accurate validation of automotive electronics before mass production. - Medical Imaging Systems:
Drives portable X-ray detectors and ultrasound beamformers. The dual outputs isolate sensitive analog front-ends from noisy digital processing rails, reducing image artifacts. Low EMI emissions prevent interference with wireless telemetry in hospital environments, and high reliability ensures consistent performance in mobile diagnostic carts subjected to frequent movement.
Core product advantages
As the enhanced upgraded version of RE4630, RE4630A integrates all power components inside 16mm×16mm×5.01mm integrated BGA package, retaining dual 18A / single 36A large current capacity while expanding voltage adaptation range. Highly integrated structure eliminates complex peripheral power matching work, the moderate-size packaging balances heat dissipation and board space occupation, perfectly applied to high-end storage devices, complex industrial control cabinets and aerospace on-board equipment with mixed high-low voltage load demands.
Expanded 4.5V~18V wide input range and 0.6V~8V ultra-wide adjustable output break the limitation of traditional large-current low-voltage modules. It owns excellent transient response speed and only ±1.5% total DC output error, keeping analog circuits and special industrial loads powered stably during voltage fluctuation. Voltage tracking and soft-start functions optimize multi-power-rail sequential power-on performance, reliable operation within -55℃~125℃ meets extreme working conditions of defense and mining equipment.
RE4630A is completely pin-to-pin and BOM compatible with LTM4630A, engineers can replace imported chips directly without hardware redesign and scheme re-development. The localized alternative solution strengthens supply chain anti-risk ability, shortens material delivery cycle, stable consistent performance guarantees batch replacement quality, bringing flexible upgrade options for industrial and aerospace equipment manufacturers.
Soft-start and voltage tracking functions simplify complicated multi-rail power timing design, output voltage can be quickly calibrated through simple resistance configuration. Comprehensive overvoltage, overcurrent, overtemperature protection and load protection avoid equipment burnout under harsh industrial impact. On-chip temperature detection and PGOOD real-time monitoring realize intelligent status judgment, simple peripheral design lowers prototype debugging difficulty, bringing high safety and easy deployment for customized industrial and aviation equipment.
Alternative Names
Wide Output Range 36A Power Module / 36A Wide Output Dc-Dc Converter Module / 36A High Current Point Of Load Module / 36A High Density Pol Power Module / Wide Output 36A Synchronous Buck Module / 36A Step-Down Dc-Dc Regulator Module / Wide Voltage Output 36A Power Module / 36A Integrated Dc-Dc Power Unit / 36A Board Mount Pol Converter Module / 36A Smd Dc-Dc Regulator Module / Compact 36A Wide Output Power Module / 36A Embedded Dc-Dc Buck Module / 36A On-Board Step Down Power Module / High Efficiency 36A Wide Output Dc-Dc Module / 36A Server High Current Power Module / 36A Telecom Dc-Dc Converter Module / 36A Non-Isolated Pol Power Module / All-In-One 36A Synchronous Buck Unit / Small Form Factor 36A Power Module / Low Profile 36A Wide Output Dc-Dc Module / Multi-Protection 36A Dc-Dc Regulator Module / Low Ripple 36A High Current Power Module / Surface Mount 36A Pol Module / Industrial 36A Wide Output Power Unit / Networking Equipment 36A Dc-Dc Module / Iot 36A High Current Point Of Load Module / High Integration 36A Dc-Dc Power Module / Ultra Compact 36A Synchronous Buck Module / High Power Density 36A Converter Module / Single Output 36A Wide Voltage Pol Module / Low Heat 36A Step-Down Power Module / Plug And Play 36A Dc-Dc Module / High Frequency 36A Synchronous Buck Module / Thin Profile Smd 36A Power Module / Distributed 36A Power Supply Module / Micro 36A High Current Dc-Dc Regulator / Stable Output 36A Wide Range Power Module / Low Emission 36A Pol Converter Module / Test Instrument 36A Dc-Dc Power Module / Automation 36A Synchronous Pol Regulator / Base Station 36A Buck Power Module / Medical Equipment 36A Wide Output Converter / Single Board Computer 36A Pol Module / High Load Capacity 36A Dc-Dc Unit / Narrow Body 36A Wide Voltage Buck Module / Motherboard Core 36A Power Module / High Reliability 36A Dc-Dc Power Unit / Mini 36A Wide Output Step Down Regulator / On-Card 36A Point Of Load Module / Compact Integrated 36A Synchronous Buck Module / Low Loss 36A Dc-Dc Converter Module / Space Saving 36A Wide Output Power Module / Synchronous Rectification 36A Buck Module / Data Communication 36A High Current Pol Unit / High Performance 36A Wide Range Dc-Dc Module / Cost Effective 36A Buck Power Module / Wide Temperature 36A Pol Converter Module / Small Footprint 36A Step-Down Dc-Dc Unit / High Stability 36A Synchronous Buck Regulator / Embedded System 36A Wide Output Power Module / High Speed Circuit 36A Core Power Module / Smt Mount 36A Dc-Dc Buck Converter / Low Height 36A High Current Pol Module / Energy Efficient 36A Dc-Dc Power Unit / Board Level 36A Wide Voltage Regulator Module / Mini Smd 36A Step Down Power Module / Network Switch 36A Core Pol Module / Low Noise 36A Dc-Dc Regulator Module / Integrated Power Stage 36A Buck Module / Non-Isolated 36A Wide Output Pol Unit / Ultra Thin 36A Point Of Load Power Module / 36A Wide Output Voltage Regulator Module / Compact Distributed 36A Dc-Dc Module / 36A High Current Wide Output Pol Converter / Wide Output 36A Synchronous Buck Power Module / Embedded Pol 36A Dc-Dc Regulator Module / Low Drop 36A Wide Range Dc-Dc Module / 36A High Current Core Supply Buck Module / Communication Board 36A Power Unit / Data Center 36A High Current Pol Module / Router Core 36A Step Down Dc-Dc Module / 36A Wide Output Switching Power Module / Integrated Switching 36A Buck Power Module / Miniaturized 36A Wide Output Power Unit / Surface Mounted 36A Dc-Dc Module / Synchronous Step Down 36A Power Module / Compact High Current 36A Wide Output Regulator / 36A Embedded Wide Output Dc-Dc Converter / 36A Surface Mount Wide Voltage Power Unit / Micro Synchronous 36A Dc-Dc Power Module / 36A All-In-One High Current Pol Regulator / Server 36A Wide Output Power Module / Industrial Embedded 36A Buck Power Unit / Onboard 36A Wide Output Dc-Dc Converter / Integrated Pol 36A High Current Power Module
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