2A 150KHz 40V Buck DC to DC Converter The XL1509-5.0E1 is a fixed frequency PWM buck step-down DC-DC converter capable of driving a load with high efficiency, low ripple, and excellent line and load regulation. It is manufactured by XLSEMI and belongs to the XL1509 product family, a series of fixed-output and adjustable-output step-down switching regulator ICs designed to simplify the design of compact, efficient DC power conversion stages in a wide range of embedded, industrial, and consumer electronics applications. The "5.0" designation in the part number specifies that this variant produces a fixed regulated output voltage of five volts, making it directly suited to powering five-volt logic, microcontrollers, sensors, communication modules, and other standard digital subsystems from higher-voltage DC rails without requiring a linear regulator and its inherent power dissipation penalty. Unikeyic Electronics The XL1509 requires a minimum number of external components, making it simple to use, and includes internal frequency compensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from zero to one hundred percent. This internal compensation architecture removes the burden of control loop design from the system engineer, which is a common point of complexity in discrete buck converter designs, and allows the device to be implemented with a straightforward application circuit consisting of an input capacitor, an output inductor, a freewheeling Schottky diode, and an output capacitor, without requiring additional feedback network components in the fixed-output version. Unikeyic Electronics The device operates across a wide input voltage range, accepting input rails ranging from just above the output voltage all the way up to the high end of the input range, making it compatible with a variety of common source voltages including twelve-volt, twenty-four-volt, and other industrial bus rails frequently encountered in embedded and industrial power system designs. This wide input range also makes it suitable for battery-powered applications where the supply voltage varies considerably across the battery discharge cycle, as the converter maintains a regulated output throughout the input voltage window. The fixed switching frequency is set internally at a value that represents a practical tradeoff between external component size and switching loss, allowing the use of standard commodity inductors and electrolytic or ceramic output capacitors without requiring unusually large or small values. An enable function and an overcurrent protection function are built inside. When a secondary current limit condition occurs, the operating frequency is reduced to a lower switching frequency, which limits the energy delivered per cycle and prevents damage to the power switch and external components during sustained overload events. This dual-level current protection approach provides both instantaneous peak current limiting and sustained overload protection, improving the robustness of designs built around the device in applications where load transients or fault conditions may cause temporary overcurrent conditions. Unikeyic Electronics The device is housed in a standard eight-pin small-outline integrated circuit surface-mount package, making it compatible with automated pick-and-place and reflow soldering assembly processes and suitable for compact power supply layouts on densely populated PCBs. Spec Sheet Identification Part Number: XL1509-5.0E1 Device Family: XL1509 Buck DC-DC Converter Series Manufacturer: XLSEMI Part Number Decode XL1509: Base device family 5.0: Fixed output voltage — five volts E1: Tape-and-reel packaging variant Functional Classification Device Type: Fixed-frequency PWM step-down buck DC-DC converter IC Topology: Non-synchronous buck converter with internal power switch Output Configuration: Single output, fixed voltage Regulation Method: Fixed-frequency PWM with internal compensation Electrical Characteristics Input Voltage Range: Wide input range, compatible with common industrial and consumer DC bus voltages Output Voltage: Fixed regulated output at five volts Output Current: Continuous rated current class suitable for moderate embedded system loads Switching Frequency: Fixed internal oscillator, mid-frequency class Duty Cycle Range: Adjustable from zero to maximum, internally controlled Minimum Dropout Voltage: Low dropout class Output Ripple: Low ripple characteristic with appropriate external filter components Control & Protection Features Enable Function: Built-in enable control input for power sequencing and shutdown Overcurrent Protection: Integrated primary current limit with frequency fold-back secondary protection Internal Compensation: Built-in frequency compensation, no external compensation network required Feedback: Internal reference for fixed output voltage regulation External Components Required Input Capacitor: Required for input decoupling Output Inductor: Required, standard commodity value Freewheeling Diode: External Schottky diode required Output Capacitor: Required for output filtering Environmental & Qualification Operating Temperature Range: Industrial range, below zero to elevated ambient RoHS Compliance: Yes, Halogen-Free Package Package Type: SOIC-8 (SOP-8) Mounting Method: Surface mount technology (SMT) Packaging Format Supply Format: Tape-and-reel Reel Quantity: Standard production reel quantity Available Variants in XL1509 Family XL1509-3.3E1: Fixed output at regulated lower voltage XL1509-5.0E1: Fixed output at five volts (this device) XL1509-12E1: Fixed output at twelve volts XL1509-ADJE1: Adjustable output version #XL1509 #XL15095 #XLSEMI #BuckConverter #StepDownConverter #DCDCConverter #PWMConverter #SwitchingRegulator #PowerManagement #EmbeddedPower #FixedOutputConverter #FiveVoltRegulator #IndustrialPower #SOIC8 #SurfaceMount #LowRipple #HighEfficiency #SemiconductorIC #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #RoHSCompliant #PCBDesign

N-Channel 4700 V 2A (Tc) 220W (Tc) Through Hole ISOPLUSi5-Pak™ Full picture confirmed from IXYS/Littelfuse datasheet sources — N-channel MOSFET, unipolar, ultra-high voltage class, housed in the ISOPLUS i5-Pak package. Here's the complete spec. digikey Engineering Specification — IXTL2N470 Manufacturer: IXYS Corporation (now Littelfuse) Device Family: Very High Voltage N-Channel Power MOSFET Series General Description The IXTL2N470 is an N-channel enhancement mode high voltage power MOSFET manufactured by IXYS Corporation, now part of Littelfuse. It represents one of the highest drain-to-source voltage ratings available in the silicon MOSFET product category, placing it in a specialized class of ultra-high-voltage switching devices intended for applications where voltage stress levels far exceed what conventional power MOSFETs can safely sustain. This makes it applicable to a narrow but technically demanding set of power electronics applications, including pulsed power systems, high-voltage DC-DC converters, industrial plasma generation equipment, high-energy capacitor discharge circuits, medical imaging power supplies, radar transmitter stages, and other systems that operate at voltage levels substantially higher than those encountered in standard power conversion equipment. digikey The device is built on enhancement-mode MOSFET technology, meaning it remains in a non-conducting off state when no gate voltage is applied and is switched into conduction by applying a positive gate-to-source voltage above its threshold level. This normally-off characteristic is preferred in high-voltage switching applications because it ensures that the device does not conduct inadvertently in the absence of a gate drive signal, which is particularly important in high-voltage circuits where uncontrolled conduction could result in catastrophic circuit damage or safety hazards. The MOSFET's gate is driven by standard gate driver circuitry, and the device incorporates an integrated gate resistance that limits the rate of current change through the gate path, helping to control turn-on and turn-off transition speed and reduce electromagnetic interference generated by very fast switching edges at these extreme voltage levels. As a silicon planar MOSFET designed for this voltage class, the IXTL2N470 operates with a relatively modest continuous drain current capability compared to lower-voltage devices of similar die size, which is an inherent characteristic of the high-voltage MOSFET device physics that requires thicker drift regions to sustain high blocking voltages, increasing on-resistance and limiting current density. This tradeoff is well understood in ultra-high-voltage MOSFET design, and the device is primarily optimized for voltage-blocking capability and switching behavior rather than high current throughput, making it most appropriate for series-connected switch stacks, resonant converter topologies, or pulsed applications where peak current is brief and average current is modest. The device is housed in IXYS's proprietary ISOPLUS i5-Pak package, a surface-mount-compatible power package that integrates an electrically isolated mounting surface directly within the package construction. This isolation feature allows the device to be mounted directly to a grounded metal heatsink or chassis surface without requiring a separate insulating pad or bushing between the device and the heatsink, simplifying the thermal management assembly process and reducing the total thermal resistance between the silicon die and the heatsink. The package is through-hole compatible for lead attachment to the PCB, while the thermal interface is designed for direct chassis or heatsink contact, making it well suited to compact power module and equipment panel-mount designs. Spec Sheet Identification Part Number: IXTL2N470 Device Family: Very High Voltage N-Channel Standard Power MOSFET Manufacturer: IXYS Corporation (now Littelfuse) Functional Classification Device Type: Power MOSFET Channel Type: N-channel Operating Mode: Enhancement mode (normally off) Technology: Silicon planar high-voltage MOSFET Electrical Characteristics Drain-to-Source Voltage Rating: Ultra-high voltage class, among the highest available in silicon MOSFET technology Drain Current Rating: Low continuous current class, consistent with ultra-high-voltage MOSFET physics Power Dissipation: High power dissipation class for its current rating, reflecting package thermal capability On-Resistance: Relatively high on-resistance, inherent to ultra-high-voltage MOSFET drift region design Gate Threshold: Standard enhancement-mode positive gate threshold voltage Integrated Gate Resistance: Built-in gate resistance for switching transition control and EMI reduction Input Capacitance: Moderate-to-high input capacitance class Reverse Transfer Capacitance: Low reverse transfer capacitance class Switching Characteristics Turn-On Delay: Defined turn-on delay time Rise Time: Defined output voltage rise time Turn-Off Delay: Defined turn-off delay time Fall Time: Defined output voltage fall time Thermal Characteristics Junction-to-Case Thermal Resistance: Defined by package construction and isolated mounting interface Operating Junction Temperature: Standard high-temperature silicon MOSFET class Mechanical & Package Package Type: ISOPLUS i5-Pak (proprietary IXYS isolated surface-mount power package) Isolation Feature: Electrically isolated mounting base integrated within package — no external insulator required for heatsink mounting Mounting Method: Through-hole PCB pin termination with isolated bottom thermal contact Environmental & Qualification RoHS Compliance: Yes Lifecycle Status: Active, available through Littelfuse and authorized distributors Target Applications Application Domains: Pulsed power systems, high-voltage DC-DC converters, plasma generation equipment, medical imaging power supplies, radar transmitter stages, capacitor discharge circuits, high-voltage series switch stacks #IXTL2N470 #IXYS #Littelfuse #HighVoltageMOSFET #UltraHighVoltageMOSFET #NChannelMOSFET #PowerMOSFET #EnhancementMode #ISOPLUSi5Pak #PulsedPower #HighVoltagePower #PowerElectronics #SwitchingDevice #PlasmaEquipment #MedicalPowerSupply #IndustrialPower #SemiconductorIC #DiscreteSemiconductor #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #RoHSCompliant

# UCC28950TPWRQ1 Engineering Specifications **General Description** The UCC28950TPWRQ1 is an automotive-qualified phase-shifted full-bridge controller manufactured by Texas Instruments. It is specifically designed for high-efficiency isolated DC-to-DC power conversion systems requiring advanced control, high power density, and reliable operation in demanding automotive and industrial environments. The device implements phase-shifted pulse-width modulation control with programmable dead-time management to achieve zero-voltage switching across a wide load range. This soft-switching architecture significantly reduces switching losses, improves overall efficiency, minimizes electromagnetic interference, and enables higher switching-frequency operation. The controller integrates comprehensive protection and monitoring functions, including current limiting, overvoltage protection, soft-start control, and fault management. Its flexible architecture supports a wide variety of isolated power-supply topologies used in electric vehicles, onboard charging systems, telecommunications infrastructure, industrial power supplies, and high-performance DC-DC converters. Qualified to automotive reliability standards, the device is suitable for mission-critical applications requiring long-term operational stability and robust power-conversion performance. **Engineering Specifications** **Manufacturer:** Texas Instruments **Manufacturer Part Number:** UCC28950TPWRQ1 **Component Type:** Phase-shifted full-bridge PWM controller **Technology:** Advanced mixed-signal power-management integrated circuit **Control Method:** Phase-shifted pulse-width modulation **Converter Topology:** Full-bridge isolated DC-to-DC converter control **Switching Technique:** Zero-voltage switching support **Efficiency Enhancement:** Reduced switching losses through soft-switching operation **Dead-Time Control:** Programmable adaptive dead-time management **Gate Drive Outputs:** High-current complementary PWM outputs **Current Control:** Cycle-by-cycle current limiting capability **Soft-Start Function:** Programmable startup control **Synchronization Capability:** External synchronization support **Frequency Control:** Programmable switching frequency operation **Feedback Architecture:** Closed-loop voltage regulation support **Fault Management:** Integrated fault detection and shutdown capability **Protection Features:** Overcurrent protection, overvoltage protection, undervoltage lockout, fault shutdown, and soft-start protection **Automotive Qualification:** AEC-Q100 qualified **Reliability Grade:** Automotive-grade performance and reliability **Electromagnetic Compatibility:** Optimized for low-noise power-conversion applications **Power Supply Configuration:** Single-controller power-management operation **Temperature Stability:** Designed for extended automotive operating conditions **Control Flexibility:** Supports a wide range of isolated converter designs **System Integration:** Compatible with high-power MOSFET and IGBT switching stages **Operating Temperature Range:** Automotive temperature range **Package Type:** Thin Shrink Small Outline Package **Package Configuration:** Surface-mount package **Mounting Style:** Surface mount technology **Environmental Compliance:** RoHS compliant and lead-free **Quality Standard:** Automotive production and qualification standards **Typical Applications** Automotive DC-to-DC converters Electric vehicle power systems Battery management systems Onboard charging equipment Telecommunications power supplies Industrial power converters High-power isolated DC-DC modules Server and networking power systems Renewable energy conversion systems Automotive auxiliary power units Motor control power supplies Power-distribution architectures High-efficiency switching power supplies Advanced automotive electronics Mission-critical power-management systems #UCC28950TPWRQ1 #UCC28950 #TexasInstruments #PhaseShiftedFullBridge #PWMController #PowerManagement #DCDCConverter #AutomotiveElectronics #PowerSupplyDesign #ZeroVoltageSwitching #SoftSwitching #ElectricVehicle #IndustrialPower #PowerElectronics #ElectronicComponents #EngineeringSpecifications

Buck Switching Regulator IC Positive Adjustable 1.2V 1 Output 3.5A 8-PowerSOIC (0.154", 3.90mm Width) The LM5013DDAR is a 100-V input, 3.5-A buck switching regulator IC that efficiently steps down high DC voltages (such as 24 V, 48 V, or battery rails) to lower regulated outputs. It is optimized for rugged environments where wide input variations and high reliability are required. It features ultra-low quiescent current operation, making it suitable for systems that require high efficiency even at light load or standby conditions. Key Features Wide input voltage range: 6 V to 100 V Up to 3.5 A output current capability Integrated 100-V high-side MOSFET Non-synchronous buck topology Ultra-low quiescent current (IQ) for high efficiency in standby Constant-on-time (COT) control for fast transient response No external compensation components required Adjustable output voltage (down to ~1.2 V reference) 50 ns minimum on/off time for high step-down ratios Built-in protection features: Overcurrent protection Thermal shutdown Input undervoltage lockout (UVLO) Open-drain power-good (PGOOD) signal for system monitoring Meets low EMI requirements (CISPR 25 Class 5 capable) Package 8-pin SO PowerPAD (DDA) surface-mount package Designed for good thermal performance in high-voltage applications Typical Applications Industrial power supplies (24 V / 48 V systems) Automotive power systems Telecom and networking equipment High cell-count battery systems Motor control and inverter subsystems #LM5013 #BuckConverter #DCDCConverter #TexasInstruments #PowerManagementIC #HighVoltageRegulator #3ARegulator #IndustrialPower #AutomotiveElectronics #SwitchingRegulator #COTController