HCV1707R1-R48-R - 480nH 32A Power Inductor | Eaton
料号： HCV1707R1-R48-R ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.74 | $274.00 |
| 500 | $2.39 | $1,195.00 |
| 1,000 | $2.05 | $2,050.00 |
HCV1707R1-R48-R 概述
What is a power inductor? A power inductor is a passive magnetic component that stores energy in its magnetic field during the ON-switch cycle of a switching regulator and releases it during the OFF-cycle, smoothing output current and forming the LC output filter with the regulator's output capacitor. Power inductors are essential building blocks in switch-mode power supplies (SMPS), DC-DC converters, and voltage regulator modules (VRMs), sitting within the broader hierarchy: inductor -> passive component -> magnetic component -> electronic component. In high-current buck regulators (e.g., Eaton/Vicor PI354x Cool-Power ZVS family mentioned in datasheet references), the output inductor directly determines ripple current, transient response, and steady-state efficiency.
Key features of the HCV1707R1-R48-R include a 480 nH nominal OCL (open-circuit inductance) measured at 100 kHz / 0.1 Vrms, low DCR for minimal I^2R loss, an operating temperature range up to +125 C (per Eaton datasheet derating guidance), and a 3-terminal SMD construction suitable for reflow soldering. The drum-core wirewound architecture offers a high saturation current ceiling relative to its footprint and is optimized for switching frequencies from approximately 100 kHz to 1 MHz.
Technically, the HCV1707 family uses a ferrite drum core with a single-layer or few-turn heavy-gauge winding to balance DCR, saturation flux density, and AC winding losses. Eaton rates Irms as the DC current producing approximately 40 C temperature rise without core loss, and Isat as the current causing a defined inductance drop (typically 20%). Designers should derate for AC currents and verify worst-case hotspot under PCB layout, copper thickness, and adjacent thermal conditions.
Typical applications include 48 V to POL buck regulator output filters, server and telecom VRM inductors, high-current LED driver chokes, and Class-D audio amplifier output filters. In Eaton's reference Cool-Power ZVS buck regulator designs (e.g., PI3546-00-LGIZ referenced in datasheet collateral), the HCV1707 family is the recommended companion output inductor.
When designing with this part, pay attention to PCB pad layout - the 3-lead nonstandard pattern requires careful footprint matching. Verify peak-to-peak ripple (delta_IL = (V_in - V_out) * V_out / (V_in * f_sw * L)) stays within the inductor's Isat envelope, and derate to +125 C max hotspot per the manufacturer's worst-case derating guidance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： HCV1707R1-R48-R ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
HCV1707R1-R10-R
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
HCV1707R1-R20-R
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
HCV1707R1-R75-R
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
HCV1707R1-R47-R
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
HCV1707R1-R48-R
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →HCV1707R1-R48-R 最大额定值与电气特性
| Inductance (OCL) | 480 nH |
| Rated Current - Irms | 32 A |
| Rated Current - Isat (Saturation) | 55 A |
| DC Resistance (DCR) | 1.7 mOhm |
| Construction Type | Drum Core, Wirewound, Unshielded |
| Shielding | Unshielded |
| 封装 / 外壳 | Nonstandard, 3 Lead SMD |
| 安装类型 | Surface Mount |
| Test Frequency (OCL) | 100 kHz, 0.1 Vrms |
| 工作温度 | -40 C to +125 C (with derating) |
| Core Material | Ferrite |
| Packaging | Tape & Reel (350 pcs per reel per electricalpowersource listing) |
| RoHS 状态 | Compliant |
| Lead Free | Yes |
HCV1707R1-R48-R 引脚配置
| 引脚 1 | Terminal 1 — Power terminal (winding end) |
| 引脚 2 | Terminal 2 — Power terminal (winding end) |
| 引脚 3 | Thermal/Ground Pad — Center thermal pad for heat spreading and mechanical mounting |
典型应用
HCV1707R1-R48-R 适用于 6 应用s: 48V POL Buck Regulator Output Filter, Server and Telecom VRM Inductors, High-Current LED Driver Chokes, Class-D Audio Amplifier Output Filter, Industrial 48V Bus DC-DC Converter, Battery Management System (BMS) Discharge Path.
48V POL Buck Regulator Output Filter
The HCV1707R1-R48-R's 480 nH inductance and 55 A Isat rating make it a strong fit for 48V-to-POL buck regulator output filters in telecom and server rails. At a typical 600 kHz switching frequency the inductor sets peak-to-peak ripple delta_IL = (V_in - V_out) * V_out / (V_in * f_sw * L); with 48V in and 12V out, this part yields roughly 5.7 A pk-pk ripple against 32 A Irms - a healthy ratio. Eaton specifically lists this inductor in the Cool-Power ZVS buck regulator reference designs (e.g., PI3546-00-LGIZ), confirming electrical compatibility. Compared with a discrete toroid the drum-core SMD form saves board area while preserving the Isat headroom needed for load transient events. Designers should still verify worst-case hotspot does not exceed +125 C under full AC derating per Eaton's datasheet guidance.
推荐
Server and Telecom VRM Inductors
High-current CPU, GPU, and ASIC voltage regulator modules (VRMs) in hyperscale servers demand inductors with low DCR, high Isat, and predictable thermal behavior. The HCV1707R1-R48-R's 1.7 mOhm DCR limits full-load copper loss to approximately 1.7 W at 32 A - low enough that the part can be placed in still air without forced cooling when PCB copper spreading is adequate. The 55 A Isat envelope absorbs VRM transient load steps (e.g., 30 A to 55 A microsecond-scale events) without entering saturation that would degrade output voltage regulation. Eaton's 100 kHz / 0.1 Vrms OCL test characterization also gives power-stage designers a clean small-signal model for loop compensation. This part is a fit where VRM efficiency targets around 92-95% at full load.
推荐
High-Current LED Driver Chokes
High-brightness LED driver stages running at several amps benefit from the HCV1707R1-R48-R's combination of compact SMD footprint and 32 A Irms rating. In a constant-current buck LED driver topology, the inductor smooths the switching ripple that would otherwise produce visible flicker or audible noise. The 480 nH value pairs well with 200 kHz to 500 kHz switching frequencies commonly used in commercial LED drivers targeting 5 A to 20 A LED strings. Compared with a through-hole toroid the SMD drum core enables automated assembly and reduces parasitic lead inductance that causes ringing at the switching node. Verify that AC current at the chosen f_sw does not exceed Eaton's derating curve before finalizing the BOM.
推荐
Class-D Audio Amplifier Output Filter
Class-D audio amplifiers use LC low-pass filters at the output to reconstruct the audio waveform from the PWM switching signal. The HCV1707R1-R48-R's 480 nH inductance is suitable as the L component in a 2nd-order output filter for amplifiers in the 50 W to 200 W range, paired with an appropriate film or ceramic capacitor to set the -3 dB cutoff above the audio band. The unshielded drum-core construction requires careful PCB placement to avoid magnetic coupling to nearby signal traces - typically routed at least 10 mm away from sensitive audio paths. Compared with ferrite-bead-based filter chains the HCV1707R1-R48-R delivers lower I^2R loss and higher current capability for sustained high-power musical transients. Verify EMI compliance per applicable FCC/CE standards after filter integration.
推荐
Industrial 48V Bus DC-DC Converter
Industrial 48V backplane and battery systems use isolated or non-isolated buck converters to step down to logic-level rails (12V, 5V, 3.3V). The HCV1707R1-R48-R's 480 nH value fits the output filter of a 48V-to-12V/5V buck converter at switching frequencies of 300 kHz to 700 kHz. With 55 A Isat the inductor tolerates full-load turn-on transients where the output capacitor bank demands large inrush - critical for hot-swap and paralleled-converter redundancy architectures. The Eaton datasheet's stated +125 C maximum hotspot temperature supports deployment in sealed industrial enclosures where ambient may reach 70 C to 85 C. Designers should pair with X7R ceramic or polymer output capacitors to control ripple and ESR-related thermal stress.
推荐
Battery Management System (BMS) Discharge Path
In battery management systems for e-mobility and energy storage, the discharge path often uses a buck converter to step the pack voltage down to auxiliary rails. The HCV1707R1-R48-R's 55 A Isat envelope covers the peak discharge currents seen during regen or auxiliary load events. The 1.7 mOhm DCR minimizes parasitic drain on the battery pack, improving round-trip efficiency - particularly important in 48V mild-hybrid and stationary storage applications. Eaton's industrial-grade operating temperature window (-40 C to +125 C with hotspot derating) supports under-hood and outdoor cabinet deployments. Mechanical robustness of the SMD drum-core construction also tolerates the vibration profiles typical of e-mobility and rail applications.
推荐
推荐产品汇总
工程参考数据： HCV1707R1-R48-R ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | HCV1707R1-R10-R | HCV1707R1-R20-R | HCV1707R1-R47-R | HCV1707R1-R75-R | HCV1707R1-R48-R (Vicor listing) |
|---|---|---|---|---|---|---|
| Brand | Eaton | Eaton | Eaton | Eaton | Eaton | Vicor (dual-brand) |
| Package | Nonstandard, 3 Lead SMD | Nonstandard, 3 Lead SMD - same | Nonstandard, 3 Lead SMD - same | Nonstandard, 3 Lead SMD - same | Nonstandard, 3 Lead SMD - same | Nonstandard, 3 Lead SMD - same |
| Inductance (OCL) | 480 nH | 100 nH | 200 nH | 470 nH | 750 nH | 480 nH |
| Shielding | Unshielded (drum core) | Unshielded (drum core) | Unshielded (drum core) | Unshielded (drum core) | Unshielded (drum core) | Unshielded (drum core) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Test Frequency (OCL) | 100 kHz, 0.1 Vrms | 100 kHz, 0.1 Vrms | 100 kHz, 0.1 Vrms | 100 kHz, 0.1 Vrms | 100 kHz, 0.1 Vrms | 100 kHz, 0.1 Vrms |
| Operating Temperature | -40 C to +125 C (with derating) | -40 C to +125 C (with derating) | -40 C to +125 C (with derating) | -40 C to +125 C (with derating) | -40 C to +125 C (with derating) | -40 C to +125 C (with derating) |
关键差异点
- Documented compatibility with Eaton/Vicor Cool-Power ZVS reference designs （对比 Generic 480 nH SMD power inductors)
- Dual-source availability via Eaton and Vicor branding （对比 Eaton-only HCV1707R1-R48-R ordering)
- Within-family pin-compatible inductance scaling (R10/R20/R47/R75) （对比 Cross-brand 480 nH SMD inductors)
设计说明
Estimated: at 32 A Irms the HCV1707R1-R48-R dissipates approximately I^2R = 32^2 * 0.0017 = 1.74 W of copper loss, which yields a roughly 30-40 C temperature rise in still air per Eaton's Irms definition. Mount on a PCB copper pour of at least 1 square inch connected to the thermal pad to spread heat into the inner ground plane. Worst-case hotspot must remain below +125 C per Eaton's derating guidance; verify under end-application airflow conditions.
The 3-lead nonstandard SMD footprint is specific to the Eaton HCV1707 family - do not substitute a generic JEDEC land pattern. Place the inductor away from sensitive analog signal traces by at least 10 mm to minimize magnetic coupling from the unshielded drum core. Use wide, short power traces on both winding terminals to minimize additional copper loss and parasitic inductance that would degrade switching-node ringing.
Do not assume 32 A Irms is the safe operating ceiling for AC currents - Eaton explicitly requires derating for AC and explicitly states Irms is 'DC current for an approximate temperature rise of 40 C without core loss.' Also verify peak-to-peak ripple current delta_IL = (V_in - V_out) * V_out / (V_in * f_sw * L) stays well within the 55 A Isat envelope during worst-case load transients, including at minimum switching frequency. Crossing saturation causes inductance collapse and output voltage overshoot.
Connect the center thermal pad to a copper pour on the top and inner PCB layers with multiple thermal vias (8 to 12 vias, 0.3 mm drill) to spread heat into the inner ground plane. Keep the input capacitor loop (VIN to high-side FET to SW node) tight and on the opposite side of the PCB from the output inductor loop to minimize noise injection. Place the output inductor and output capacitor close together to minimize the high-di/dt switching loop area.
合规信息
RoHS and lead-free compliance confirmed by Eaton distributor listings (DigiKey/Mouser). Halogen-free status not explicitly stated in the verified sources - set to 'unknown'. AEC-Q100 not applicable for a passive power inductor.
