XR75100EVB - 40V Sync Buck COT Eval Board | MaxLinear
Référence : XR75100EVB ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $115 | $115,00 |
| 5 | $109 | $545,00 |
| 10 | $103 | $1 030,00 |
| 25 | $98 | $2 450,00 |
| 50 | $95 | $4 750,00 |
XR75100EVB Présentation
An evaluation board (EVB) is a fully assembled reference design PCB that lets engineers power up, probe, and characterize a target IC without designing their own layout. EVBs accelerate time-to-market by exposing key test nodes (input, output, SW node, GND, EN) and by using manufacturer-recommended external components - inductors, capacitors, MOSFETs - so that performance numbers (efficiency, ripple, load step, thermal) measured on the bench can be reproduced in production designs. The XR75100EVB is targeted at industrial power evaluation, where 24V to 5V/3.3V intermediate buses are standard.
Key features include a 5.5V to 40V input range, up to 20A output current at the point-of-load, and a proprietary emulated current-mode COT control scheme that delivers extremely fast line and load transient response with ceramic output capacitors. The reference design is specified for industrial-grade operating conditions and demonstrates synchronous rectification with internal MOSFET drivers. According to the MaxLinear product page, the XR75100 supports programmable switching frequency, soft-start, and fault protection including over-current, over-voltage, and thermal shutdown.
The board leverages MaxLinear's emulated current-mode architecture, which simulates peak current-mode control without an external current-sense resistor, reducing losses and board area. COT control inherently rejects line transients within a single switching cycle, and emulated current mode adds a synthetic ramp that enables stable operation with very-low-ESR ceramic output capacitors - a combination that simplifies BOM and improves loop bandwidth versus traditional voltage-mode controllers. The result is a tight transient response suitable for powering FPGAs, ASICs, and DSP cores that demand <1% voltage excursion under load step.
Typical applications include industrial automation PLC and motor-drive 24V intermediate bus conversion, telecommunications and networking equipment point-of-load regulation, and automotive 12V/24V accessory rails. The 40V absolute-maximum input withstands 24V nominal rails plus transients without surge suppression, making the XR75100EVB a strong choice for factory floor and telecom-shelf environments.
When designing with this reference, populate input bulk capacitance for the worst-case load step, select the inductor per the XR75100 datasheet ripple-current guideline (typically 30% of IOUT), and ensure the exposed thermal pad of any controller-sourced variant receives sufficient copper pours. Note that the EVB is intended for lab characterization - production designs should reuse the schematic and BOM rather than copy the PCB layout exactly.
This page synthesizes distributor pricing, manufacturer specifications, and application context for the MaxLinear XR75100EVB that go beyond a single datasheet download, helping you decide whether this COT-based evaluation reference suits your 24V-bus point-of-load design.
Alternatives de remplacement direct pour XR75100EVB — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
XR75100
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
XR75100EVB-1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS54360EVM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS54331EVM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX17506EVKIT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
XR75100EVB Spécifications (publiées par le fabricant)
| Product Type | Evaluation Board (EVB) |
| Target IC | XR75100 synchronous buck COT controller |
| Topologie | Synchronous Step-Down (Buck), non-isolated |
| Nombre de sorties | 1 (single output) |
| Plage de tension d'entrée | 5.5 V to 40 V |
| Courant de sortie maximal | 20 A (point-of-load) |
| Control Scheme | Emulated current-mode Constant On-Time (COT) |
| Tension de sortie | Programmable (per XR75100 datasheet reference design) |
| Statut RoHS | Compliant (per MaxLinear product page) |
| Lead-Free | Yes (per MaxLinear product page) |
| Type de montage | Through-hole terminal (bench/eval) |
| Fréquence de commutation | Programmable (per XR75100 datasheet) |
| Protection Features | Over-current, over-voltage, thermal shutdown (controller-level) |
Interfaces et connecteurs du XR75100EVB
Le XR75100EVB expose les interfaces et connecteurs suivants tels que publiés par le fabricant : Alimentation. Le brochage de l'embase d'extension, la numérotation des broches des connecteurs et les limites électriques sont définis dans la documentation du fabricant.
| Alimentation | 5.5 V to 40 V |
Consultez la documentation du fabricant pour le brochage complet du connecteur d'extension et la numérotation des broches du connecteur.
Caractéristiques de puissance et thermiques
| Alimentation | 5.5 V to 40 V |
Paramètres d'alimentation et thermiques pour XR75100EVB tels que publiés par le fabricant.
Applications typiques
XR75100EVB convient pour 6 applications: Industrial 24V to 5V/3.3V Point-of-Load, FPGA / ASIC Core Rail Power, Telecommunications / Networking Equipment, Automotive 12V/24V Accessory Rails, Portable Test and Measurement Equipment, Solar / Energy Harvesting Auxiliary Power.
Industrial 24V to 5V/3.3V Point-of-Load
The MaxLinear XR75100EVB evaluation board is well suited to industrial 24V to 5V or 3.3V point-of-load conversion, where its 5.5V to 40V input range tolerates 24V nominal rails plus transients without surge suppression. The emulated current-mode COT control loop rejects line transients within a single switching cycle, so a load-step event propagates to the output as a brief excursion held within the regulator's <1% tolerance band. For a typical 24V to 5V/20A design, the controller drives synchronous MOSFETs at a programmed switching frequency, with the inductor selected per the datasheet ripple-current guideline (typically 30% of IOUT). Unlike a fixed-frequency voltage-mode controller, the COT scheme remains stable with low-ESR ceramic output capacitors, simplifying the BOM and reducing board area in factory-floor PLC and motor-drive intermediate buses.
Recommandé
FPGA / ASIC Core Rail Power
The XR75100EVB's 20A point-of-load capacity and emulated current-mode COT response make it a strong evaluation reference for FPGA and ASIC core rails that demand tight transient regulation. A typical Xilinx or Intel FPGA core rail of 1.0V to 1.8V must hold within +/-3% under load-step transients caused by SRAM clock gating, and the XR75100's COT loop typically delivers <1% voltage excursion during a 50% load step. The 5.5V to 40V input survives a wide range of upstream rails, so designers can power the EVB from a 12V or 24V backplane and configure VOUT through the feedback resistor divider. The synchronous buck topology achieves >95% efficiency at moderate loads, reducing heatsinking relative to linear regulators. Engineers should check the FPGA's data-sheet ripple spec against measured output ripple, and verify the controller's UVLO and OVP thresholds are compatible with their sequencing scheme.
Recommandé
Telecommunications / Networking Equipment
In telecom and networking equipment, -48V backplanes with 24V intermediate buses power line cards and switch fabrics through point-of-load converters. The XR75100EVB's 40V absolute-maximum input handles 24V nominal plus inductive transients without surge protection, suiting NEBS-style deployment in central offices. With 20A output capacity the evaluation platform delivers ample current for switch ASICs, PHYs, and SERDES rails, while the COT control scheme tolerates the wide load-step range typical of packet-processing silicon. The synchronous buck topology keeps EMI predictable through programmed on-time behavior, and the XR75100's programmable switching frequency allows designers to balance efficiency against conducted emissions for ETSI EN 300 386 or FCC Part 15 compliance. The board's bench-friendly terminal blocks support 4-wire Kelvin measurements for accurate efficiency and thermal characterization before committing to a custom PCB.
Recommandé
Automotive 12V/24V Accessory Rails
The XR75100EVB's 5.5V to 40V input range and 20A output capability can evaluate power rails in automotive 12V and 24V accessory systems such as infotainment head units, instrument clusters, and ADAS sensor modules. Cold-crank transients on 12V batteries dip below 6V and load dumps spike above 40V, so the evaluation board's input range comfortably brackets typical automotive voltages within the controller's operating envelope. The synchronous buck topology achieves high efficiency at partial loads, extending battery-runtime in always-on systems. Designers should add input TVS protection and bulk capacitance per automotive EMC standards (ISO 7637, ISO 16750) on production PCBs; the EVB alone is not automotive-qualified but serves as a 24V-bus bench reference prior to AEC-Q100 component selection. The COT loop's fast transient response suits the dynamic current profile of ADAS image processors.
Recommandé
Portable Test and Measurement Equipment
Battery-powered or USB-PD sourced test and measurement instruments benefit from the XR75100EVB's wide 5.5V input minimum, which accepts a single-cell Li-ion battery (4.2V max, with the controller operating down to 5.5V via boost) or a USB-C PD negotiated 12V/15V/20V rail. The evaluation board demonstrates how a 20A synchronous buck converter can power high-current analog front-ends, DACs, or RF signal-chain circuitry from a portable supply. The emulated current-mode control provides fast transient response to varying RF PA current draw, minimizing rail collapse during transmit bursts. Programmable soft-start prevents inrush on battery packs and hot-plug events. The bench-friendly form factor accelerates prototyping, and the EVB's exposed test points enable oscilloscope probing of SW node, VOUT ripple, and load-step transient response before committing to a custom layout.
Recommandé
Solar / Energy Harvesting Auxiliary Power
In solar-powered remote monitoring and energy-harvesting systems, intermediate bus voltages vary with irradiance and battery state-of-charge, often in the 6V to 36V range for 12V/24V battery stacks. The XR75100EVB's 5.5V to 40V input range and COT transient response make it an evaluation reference for harvesting-augmented supplies that must ride through wide input fluctuations without output brown-out. The synchronous buck topology keeps efficiency above 90% across a wide load range, preserving harvested energy, and the EMIRR (EMI rejection) of the COT loop rejects the switching noise of upstream boost converters feeding the bus. The evaluation board's 20A capability accommodates higher-power sensor nodes, while the controller's programmable switching frequency allows designers to optimize efficiency versus input voltage. Production designs should add input reverse-polarity protection and TVS clamping specific to outdoor deployments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour XR75100EVB — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | XR75100 | XR75100EVB-1 | TPS54360EVM | TPS54331EVM | MAX17506EVKIT |
|---|---|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear (same brand) | MaxLinear (same brand) | Texas Instruments | Texas Instruments | Analog Devices |
| Package | Evaluation Board (bench PCB) | QFN-16 (controller IC alone) | Evaluation Board (bench PCB) | Evaluation Board (bench PCB) | Evaluation Board (bench PCB) | Evaluation Kit (bench PCB) |
| Input Voltage Range | 5.5 V to 40 V | 5.5 V to 40 V (same IC) | 5.5 V to 40 V | 4.5 V to 60 V | 3.6 V to 28 V | 4.5 V to 60 V |
| Maximum Output Current | 20 A | 20 A (controller capability) | 20 A | 3.5 A | 3 A | 5 A |
| Control Topology | Emulated Current-Mode COT | Emulated Current-Mode COT (same die) | Emulated Current-Mode COT | ECOT (enhanced COT) | Voltage-Mode/Peak Current-Mode (TI Eco-Mode) | Peak Current-Mode PWM |
| Synchronous Rectification | Yes (high-side + low-side drivers) | Yes | Yes | Yes | Yes | Yes |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
| Typical Single-Unit Price (as of 2026-10-11) | $115 | $3 to $6 (controller IC alone) | Similar ($100-$120) | $99 (typ) | $49 (typ) | $59 (typ) |
| Target Application | Industrial 24V POL, 20A | Same target - non-isolated 24V POL | Same target - non-isolated 24V POL | Lower-current 12V/24V POL (3.5A) | Lower-current 12V POL (3A) | Industrial 24V bus, 5A |
Principaux différenciateurs
- 20A point-of-load output on a bench evaluation board (vs TPS54360EVM)
- Emulated current-mode COT with no external sense resistor (vs MAX17506EVKIT)
- Wide 5.5V to 40V input range covering 24V industrial plus transients (vs TPS54331EVM)
Notes de conception
At full 20A load with a typical 24V to 5V conversion the synchronous FETs and inductor dissipate roughly 2-4W total (estimated: P_loss = I^2 * R_DS(on) + switching losses). Provide at least 1 square inch of top-layer copper beneath the inductor and FETs, and consider a small SMT heatsink on the synchronous FET if your enclosure restricts airflow. The EVB is rated for lab conditions; de-rate output current by ~20% in still air for reliability.
Per the XR75100 datasheet, place input ceramic capacitors (1uF to 4.7uF X7R, 50V or higher) within 5 mm of the BST and IN pins to minimize switching ringing. Keep the SW-node copper area minimal but wide enough to handle 20A peak current. Use a 4-layer board with a continuous ground plane under the controller to provide thermal spreading and reduce EMI. The exposed thermal pad of the controller must be soldered to at least 0.5 square inches of copper pour for thermal dissipation.
Do not exceed the controller's 40V absolute maximum VIN; load-dump on a 24V system can transiently exceed this without adequate TVS clamping or input bulk capacitance. Program the controller's soft-start time (per datasheet equation using the SS capacitor) to limit inrush to <1A/µs on hot-plug events. Verify that the feedback resistor divider uses 1%-tolerance or better to maintain output accuracy, and select the bootstrap diode per the datasheet's BST pin guidance to prevent high-side drive starvation at low duty cycle.
Although COT control rejects line transients quickly, the fundamental switching frequency varies with line and load, so harmonics can spread across the spectrum compared to fixed-frequency PWM. Place an input pi-filter (10uH + 2x 4.7uF ceramic) to attenuate conducted emissions, and add a small ferrite bead on the output if the load is sensitive above 30 MHz. Shield the SW-node copper on inner layers and minimize the SW loop area to reduce radiated emissions.
Informations de conformité
RoHS compliant and lead-free per MaxLinear product page datasheet for the XR75100 controller. AEC-Q100 status not applicable for an evaluation board (board is intended for characterization, not vehicle deployment). REACH, halogen-free, and conflict-mineral declarations not listed in the provided web data and marked unknown.