SIC462ED-T1-GE3 - 60V, 6A Sync Buck Regulator | Vishay microBUCK
MPN: SIC462ED-T1-GE3 ✓ Hoạt độngSIC462ED-T1-GE3 Tóm tắt
A synchronous buck regulator (also called a step-down switching converter) is a switch-mode power supply topology that uses a high-side MOSFET, a low-side synchronous rectifier MOSFET, an inductor and output capacitors to convert a higher DC input voltage to a lower DC output voltage with high efficiency. Buck regulators sit within the broader power management IC hierarchy of voltage regulators > DC-DC converters > power management ICs > semiconductors, and they are preferred over linear regulators whenever the input-to-output voltage differential or load current would cause unacceptable power dissipation in a linear pass element.
Key features include ±1% output voltage accuracy across the -40 °C to +125 °C operating range, internal 4 µA quiescent current, output voltage tracking and sequencing with pre-bias start-up, and a peak efficiency of 98%. The integrated MOSFETs eliminate the need for an external Schottky diode and shrink the BOM, while the 60 V input tolerance supports industrial 24 V / 28 V bus rails, battery-powered systems up to 48 V, and 12 V / 24 V automotive load-dump environments after external transient protection.
Architecturally, the SIC462 uses constant-on-time (COT) control for ultrafast transient response with minimal output capacitance, hysteretic mode for light-load efficiency, and a power-good flag for sequencing. The exposed thermal pad (EPAD) of the MLP55-27L package provides a low thermal resistance path to the PCB copper, supporting the 6 A continuous current without an external heatsink in properly laid-out designs.
Typical applications include industrial 24 V point-of-load regulators, telecom 48 V intermediate buses, automotive infotainment and ADAS power rails, battery management systems, FPGA/ASIC core and I/O supplies, and distributed DC power architectures. This page synthesizes distributor pricing, pin-compatible microBUCK alternatives, and practical PCB layout notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho SIC462ED-T1-GE3 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
SiC461ED-T1-GE3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SiC463ED-T1-GE3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SiC464ED-T1-GE3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SIC462ED-T1-GE3 Tỷ lệ tối đa & tính chất điện
| Manufacturer | Vishay Siliconix (Vishay Intertechnology) |
| Part Family | microBUCK SiC46x |
| Cấu trúc | Synchronous Buck (Step-Down) DC/DC Converter |
| Phạm vi điện áp đầu vào | 4.5 V to 60 V |
| Khoảng điện áp đầu ra | Adjustable, 0.8 V to VIN (down to 0.8 V) |
| Output Current (Continuous) | 6 A |
| Tần số chuyển đổi | Up to 2 MHz |
| Peak Efficiency | 98% |
| Full-Load Efficiency | 95% |
| Điện áp yên tĩnh | 4 µA (typ) |
| Output Voltage Accuracy | ±1% (across -40 °C to +125 °C) |
| Control Architecture | Constant-On-Time (COT) with hysteretic light-load mode |
| Khoảng nhiệt độ hoạt động | -40 °C to +125 °C |
| Hộp | PowerPAK MLP55-27L (5 mm x 5 mm), 27 leads + exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Tính năng | Pre-bias start-up, output voltage tracking/sequencing, power-good flag |
| Integrated MOSFETs | High-side + low-side N-channel MOSFETs (synchronous rectifier) |
| Trạng thái RoHS | Compliant |
Cấu hình chân SIC462ED-T1-GE3
| Chân 1 | PGND — Power ground (low-side MOSFET source) |
| Chân 2 | PGND — Power ground (low-side MOSFET source) |
| Chân 3 | PGND — Power ground (low-side MOSFET source) |
| Chân 4 | BOOT — Bootstrap capacitor for high-side gate driver |
| Chân 5 | PHASE — Switch node - return of high-side gate driver, connects to inductor |
| Chân 6 | PHASE — Switch node - return of high-side gate driver |
| Chân 7 | VIN — Power stage input voltage |
| Chân 8 | VIN — Power stage input voltage |
| Chân 9 | VIN — Power stage input voltage |
| Chân 10 | EN — Enable / UVLO threshold adjustment |
| Chân 11 | PGOOD — Power-good output flag |
| Chân 12 | AGND — Analog ground (return for FB and internal references) |
| Chân 13 | FB — Feedback input from external resistor divider |
| Chân 14 | VCC — Internal 5 V LDO output (bypass cap required) |
| Chân 15 | NC — Not connected (per datasheet) |
| Chân 16 | NC — Not connected (per datasheet) |
| Chân 17 | VIN — Power stage input voltage |
| Chân 18 | VIN — Power stage input voltage |
| Chân 19 | PHASE — Switch node - connects to inductor |
| Chân 20 | PHASE — Switch node - connects to inductor |
| Chân 21 | PGND — Power ground |
| Chân 22 | PGND — Power ground |
| Chân 23 | PGND — Power ground |
| Chân 24 | PGND — Power ground |
| Chân 25 | PGND — Power ground |
| Chân 26 | PHASE — Switch node |
| Chân 27 | PHASE — Switch node |
Ứng dụng tiêu biểu
SIC462ED-T1-GE3 phù hợp cho 6 Áp dụngs: Industrial 24 V Point-of-Load (POL) Regulator, Telecom 48 V Intermediate Bus Converter, Automotive 12 V / 24 V Infotainment Power, Battery Management & Energy Storage Systems, FPGA / ASIC Core and I/O Voltage Supplies, Distributed DC Power Architecture (POL).
Industrial 24 V Point-of-Load (POL) Regulator
The SIC462ED-T1-GE3 is purpose-built for industrial 24 V bus rails, accepting 4.5-60 V input per Vishay datasheet 65124 and delivering up to 6 A at 95% full-load efficiency. In a typical PLC or industrial controller, the 24 V backplane feeds the SIC462, which steps down to 5 V, 3.3 V or 1.8 V rails for the MCU, FPGA and sensors. The 60 V input tolerance provides headroom against inductive transients on long 24 V cables, eliminating the need for upstream TVS clamps in most installations. COT control keeps the output stable even with fast load steps from motor drivers or relay coils.
Được đề xuất
Telecom 48 V Intermediate Bus Converter
In telecom and networking equipment, the SIC462ED-T1-GE3 converts a 48 V (36-60 V) bus to a lower intermediate rail (typically 12 V or 5 V) at 6 A continuous load, as specified in Vishay datasheet 65124. The high input voltage range directly accommodates the standard ETSI/ATIS telecom bus, eliminating a front-end preregulator. Synchronous rectification drives 95-98% efficiency at full load, reducing heatsinking requirements in fan-cooled line cards. The MLP55-27L package's exposed pad allows direct solder attachment to the inner ground plane for low thermal resistance.
Được đề xuất
Automotive 12 V / 24 V Infotainment Power
The SIC462ED-T1-GE3's 4.5-60 V input range and -40 °C to +125 °C operating range suit 12 V automotive infotainment, ADAS and instrument-cluster power rails, per Vishay datasheet 65124. It supplies the head-unit SoC, audio codec and display backlight from the battery rail, surviving cold-crank and load-dump transients when paired with an upstream TVS. Pre-bias start-up prevents back-feeding the output capacitors during power sequencing with other rails, critical for automotive MCU and DSP power-on requirements. The 6 A output supports multi-rail consolidation behind a single buck IC.
Được đề xuất
Battery Management & Energy Storage Systems
For battery-powered systems up to 48 V (e-bikes, power tools, telecom battery backup, solar battery management), the SIC462ED-T1-GE3 steps down from the pack voltage to logic rails at up to 6 A, per Vishay datasheet 65124. The 4 µA quiescent current minimizes standby drain on Li-ion packs, extending shelf life and storage endurance. COT control maintains regulation even as the pack voltage sags during discharge, and the high-side MOSFET's 60 V rating tolerates fully-charged 48 V LiFePO4 or 13S Li-ion packs. Efficiency at 95% reduces thermal stress in sealed enclosures.
Được đề xuất
FPGA / ASIC Core and I/O Voltage Supplies
The SIC462ED-T1-GE3 delivers the high-current low-voltage rails (1.0 V core, 1.8 V auxiliary, 3.3 V I/O) required by modern FPGAs and ASICs from a 12 V or 24 V intermediate bus, per Vishay datasheet 65124. Up to 2 MHz switching frequency allows small inductor and capacitor selection, keeping the power stage footprint under 100 mm². COT control responds in microseconds to load transients from logic activity bursts, maintaining tight Vcore tolerance during dynamic load steps. Power-good flag enables multi-rail sequencing for safe FPGA configuration startup.
Được đề xuất
Distributed DC Power Architecture (POL)
In distributed power architectures the SIC462ED-T1-GE3 acts as a downstream point-of-load converter from an intermediate 12 V or 24 V bus, providing local 6 A regulation at high efficiency, per Vishay datasheet 65124. Each board function gets its own dedicated POL regulator, reducing distribution losses and improving transient response versus a centralized supply. The MLP55-27L footprint allows dense placement near load ICs, minimizing PCB copper losses and EMI. Scalability within the SiC46x family (2/4/6/10 A pin-compatible) supports varied rail budgets from a single layout.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho SIC462ED-T1-GE3 — 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 | SiC461ED-T1-GE3 | SiC463ED-T1-GE3 | SiC464ED-T1-GE3 |
|---|---|---|---|---|
| Brand | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology |
| Package | PowerPAK MLP55-27L (5x5 mm) | PowerPAK MLP55-27L (5x5 mm) - same | PowerPAK MLP55-27L (5x5 mm) - same | PowerPAK MLP55-27L (5x5 mm) - same |
| Output Current (Continuous) | 6 A | 10 A (+67%) | 4 A (-33%) | 2 A (-67%) |
| Input Voltage Range | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V |
| Output Voltage Range | 0.8 V to VIN (adj) | 0.8 V to VIN (adj) | 0.8 V to VIN (adj) | 0.8 V to VIN (adj) |
| Peak Efficiency | 98% | 98% | 98% | 98% |
| Switching Frequency (max) | 2 MHz | 2 MHz | 2 MHz | 2 MHz |
| Quiescent Current | 4 µA | 4 µA | 4 µA | 4 µA |
| Control Architecture | COT / hysteretic | COT / hysteretic | COT / hysteretic | COT / hysteretic |
Bảo phân biệt quan trọng
- Wide 4.5-60 V input range in compact 5x5 mm footprint (vsSiC463ED-T1-GE3 (4 A))
- Highest current in family without sacrificing efficiency (vsSiC461ED-T1-GE3 (10 A))
- Pin-compatible scalability across 2-10 A in one footprint (vsSiC464ED-T1-GE3 (2 A))
Ghi chú thiết kế
Estimated: at VIN=24 V, VOUT=5 V, IOUT=6 A, the SIC462ED-T1-GE3 dissipates roughly (24-5)*6 = 114 mW * 19 V = 2.16 W (input power minus output power; actual switching/conduction losses increase this by ~10-20%). The MLP55-27L package datasheet thermal resistance theta_JA on a 4-layer 1 oz JEDEC test board is around 36 C/W; solder the exposed thermal pad to a continuous ground copper pour of at least 1 square inch to keep the junction rise below 50 C at 2 W dissipation. For sustained 6 A operation at VIN > 30 V, add a topside copper pour stitched to inner ground planes with thermal vias.
Per Vishay datasheet 65124, place the input ceramic bypass capacitors (2x 10 µF X7R minimum, low-ESR) as close as possible to the VIN pins, and connect the PGND pins to a single unified ground plane with wide copper pours to the exposed pad. The PHASE node carries high dV/dt (>60 V in nanoseconds) and must be minimized in loop area to the input capacitors and the bootstrap capacitor to limit ringing and EMI. Use 4-layer PCB with continuous ground plane for best EMI performance; route the FB trace away from PHASE and BOOT to avoid noise injection into the feedback node.
Do not float the EN pin - tie to VIN through a resistor divider if precise UVLO threshold is required, otherwise connect directly to VIN for always-on operation. The BOOT capacitor (typically 0.1 µF X7R) must be placed within 2 mm of the BOOT and PHASE pins; missing this capacitor prevents high-side drive and the regulator will not start. The FB resistor divider must use 1% tolerance resistors referenced to the 0.8 V internal reference; values of 10 kΩ-100 kΩ are recommended to minimize quiescent current draw through the divider. The exposed pad (EPAD) must be soldered to the PCB - dry-jointing the EPAD can cause thermal runaway under load.
Thông tin tuân thủ
RoHS and lead-free confirmed via Vishay part marking suffix (-GE3 denotes lead-free halogen-free matte tin plating). Not AEC-Q100 qualified - automotive AEC-Q100 grade is not available in the SiC46x family; for AEC-Q100 60 V synchronous buck, use SiC931 or SiC931-Q1 family.
