IR38062MTRPBF - 15A Digital Sync Buck Regulator | Infineon
MPN： IR38062MTRPBF ✓ 啟用中IR38062MTRPBF 概覽
A buck regulator (also called a step-down DC-DC converter) is a power management IC that converts a higher DC input voltage to a lower DC output voltage with high efficiency by rapidly switching the input across an inductor and filtering the result. It belongs to the broader category of voltage regulators within power management ICs and is preferred over linear regulators whenever the input-to-output voltage differential is large, because switching conversion avoids the heavy thermal losses inherent to linear dropout regulation. Digital SupIRBuck regulators add PMBus telemetry and configuration on top of the analog PWM control loop.
Key features of the IR38062MTRPBF include 15 A continuous output current, 0.5 percent reference accuracy, programmable switching frequency up to 1.5 MHz, internal soft-start, and comprehensive protection such as overcurrent, overvoltage, undervoltage, and thermal shutdown. The PMBus interface exposes voltage, current, temperature, and fault status registers, while the Rt/Sync pin allows the converter to be synchronized to an external clock or another regulator for multi-phase or noise-sensitive applications.
Technically, the IR38062 uses voltage-mode control with a wide-bandwidth error amplifier, an integrated bootstrap diode, and per-cycle current limit on the low-side FET to deliver robust transient response. The 34-pin PQFN package exposes a large thermal pad to keep junction temperature rise within safe limits at full 15 A load, and the digital core allows designers to trim margining, sequencing, and fault thresholds in-circuit via PMBus without replacing components.
Typical applications include POL (point-of-load) converters in telecom and networking equipment, FPGA and ASIC core/IO rails in servers and datacenters, industrial automation controllers, graphics cards, and any distributed power architecture that requires digital monitoring and tight regulation across multiple rails.
When designing with this part, place input ceramic capacitors as close as possible to PVin and PGND, use the recommended inductor with low DCR for high efficiency, and connect the PMBus lines (SCL, SDA, SALERT) to a system controller for telemetry. Ensure adequate PCB copper on the thermal pad for 15 A continuous operation without exceeding the maximum junction temperature.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, helping sourcing engineers and power designers evaluate the IR38062MTRPBF for production deployment.
直接替換替代品，適用於 IR38062MTRPBF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： IR38062MTRPBF （相同外形與佔位） — 差異在於 Package, RoHS Status, Digital Interface, Maximum Output Current, Output Voltage Range.
IR38062M
✅ 直接替換📋 參考替代品（不在目錄中）
IR3812MTR1PBF
✅ 直接替換📋 參考替代品（不在目錄中）
IR3847MTRPBF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
IR3894MTRPBF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
IR3811MTRPBF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
IR38062MTRPBF 最大額定值與電氣特性
| 拓撲 | Synchronous Buck (Step-Down) |
| 輸入電壓範圍 | 5.5 V to 21 V |
| 輸出電壓範圍 | 0.5 V to 0.875 x PVin (max 18.375 V) |
| 最大輸出電流 | 15 A |
| Reference Accuracy | 0.5 % |
| Switching Frequency Range | 400 kHz to 1.5 MHz |
| 輸出數量 | 1 |
| 輸出類型 | Adjustable |
| Digital Interface | PMBus |
| Integrated MOSFETs | Yes (high-side and low-side) |
| Internal LDO for Single-Supply Operation | Yes (21 V) |
| 軟啟動 | Internal, programmable |
| 封裝 | 34-PowerVFQFN (PQFN, 5 x 7 mm) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant (PBF suffix) |
IR38062MTRPBF 34-powervfqfn (pqfn, 5 x 7 mm) 腳位配置指南
IR38062MTRPBF（34-powervfqfn (pqfn, 5 x 7 mm) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： IR38062MTRPBF.
請參閱 資料表 以查看完整腳位配置。
典型應用
IR38062MTRPBF 適用於 6 應用s: Telecom and Networking POL Converters, FPGA and ASIC Core/IO Power, Server and Datacenter VRM, Industrial Automation Controllers, Graphics Card and GPU Memory Rails, Test and Measurement Equipment.
Telecom and Networking POL Converters
The IR38062MTRPBF's 15 A continuous output and 0.5 V to 18.375 V adjustable range make it a strong fit for telecom and networking POL rails that power switching ASICs, PHYs, and packet processors. Its 0.5 percent VOUT accuracy keeps voltage variation within ASIC tolerance bands, while the PMBus interface lets the system controller read real-time IOUT and temperature, which is essential for energy-efficient Ethernet (EEE) power-state transitions. Operating from a single 5.5 V to 21 V supply removes the need for a separate 5 V bias rail, simplifying board layout.
推薦
FPGA and ASIC Core/IO Power
FPGAs and ASICs typically demand 0.85 V to 3.3 V core and IO rails at 10-15 A with tight accuracy, which the IR38062MTRPBF delivers at switching frequencies up to 1.5 MHz. The 400 kHz-1.5 MHz programmable range allows designers to optimize efficiency versus transient response, while the exposed thermal pad on the 34-pin PQFN package handles continuous 15 A dissipation without external heatsinking. PMBus margining supports FPGA bitstream characterization voltage sweeps.
推薦
Server and Datacenter VRM
Datacenter motherboards and accelerator cards require dense POL conversion with telemetry for thermal and power management, which the IR38062MTRPBF provides via its PMBus interface. The 15 A capability covers processor auxiliary rails, DDR termination, and PCIe retimer supplies, while the integrated high-side and low-side MOSFETs shrink the BOM versus discrete designs. The Rt/Sync pin allows phase-shifted synchronization between multiple IR38062 instances to reduce input ripple.
推薦
Industrial Automation Controllers
Industrial PLCs, motor controllers, and factory automation modules operate from 24 V backplanes that the IR38062MTRPBF steps down to 3.3 V, 5 V, and sub-1 V rails with telemetry for predictive maintenance. The -40 C to +125 C operating range and RoHS-compliant PQFN package suit factory floor environments. PMBus fault reporting reduces service truck rolls by surfacing regulator health to the host controller before catastrophic failure.
推薦
Graphics Card and GPU Memory Rails
Modern GPUs and GDDR6 memory require 15 A-capable POL converters with precise voltage control for power-state transitions. The IR38062MTRPBF's 0.5 percent accuracy and PMBus VOUT trim allow real-time GPU voltage optimization during gaming, compute, and idle states. Its 1.5 MHz switching frequency shrinks output inductor and capacitor size, freeing board area for GPU package and memory routing.
推薦
Test and Measurement Equipment
Bench power supplies, oscilloscopes, and signal generators need clean, low-ripple rails that the IR38062MTRPBF delivers through its synchronous topology and programmable frequency. The PMBus interface supports manufacturing test scripts that read back VOUT and IOUT for automated calibration, while the exposed thermal pad ensures stable operation across long test campaigns. Telemetry logs temperature and fault events for quality traceability.
推薦
推薦產品摘要
工程參考資料，適用於 IR38062MTRPBF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | IR38062M | IR3812MTR1PBF | IR3847MTRPBF | IR3894MTRPBF | IR3811MTRPBF |
|---|---|---|---|---|---|---|
| Package | 34-PowerVFQFN (PQFN, 5 x 7 mm) | 34-PowerVFQFN (PQFN, 5 x 7 mm) - same | 34-PowerVQFN (PQFN) - same footprint | 34-PowerVQFN (PQFN) - same footprint | 34-PowerVQFN (PQFN) - same footprint | 34-PowerVQFN (PQFN) - same footprint |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Output Current | 15 A | 15 A | 6 A | 12 A | 12 A | 7 A |
| Input Voltage Range | 5.5 V to 21 V | 5.5 V to 21 V | 5.5 V to 21 V | 5.5 V to 21 V | 5.5 V to 21 V | 5.5 V to 21 V |
| Digital Interface | PMBus | PMBus | PMBus | Analog (no PMBus) | Analog (no PMBus) | Analog (no PMBus) |
| Switching Frequency | 400 kHz to 1.5 MHz | 400 kHz to 1.5 MHz | 250 kHz to 1.5 MHz | 400 kHz to 1.5 MHz | 300 kHz to 1.5 MHz | 250 kHz to 1.5 MHz |
| Reference Accuracy | 0.5 % | 0.5 % | 0.5 % | 0.5 % | 0.6 % | 0.5 % |
| Integrated MOSFETs | Yes (HS + LS) | Yes (HS + LS) | Yes (HS + LS) | Yes (HS + LS) | Yes (HS + LS) | Yes (HS + LS) |
| Unit Price (qty 1, approx.) | $7.50 | Similar (same die) | $5.20 | $4.80 | $4.90 | $4.30 |
主要差異化特點
- Higher continuous output current than IR3812MTR1PBF (對比IR3812MTR1PBF)
- PMBus digital interface versus analog SupIRBuck parts (對比IR3847MTRPBF)
- Single-supply 21 V operation via internal LDO (對比IR3811MTRPBF)
設計說明
At 15 A continuous load with a typical 12 V to 1.0 V conversion, the IR38062MTRPBF dissipates approximately 2-3 W inside the PQFN-34 package. The exposed thermal pad must be soldered to a PCB copper pour of at least 1 square inch on top layer, plus thermal vias to inner copper planes, to keep junction temperature rise within the 125 C maximum. Designers should validate thermal performance with a real PCB under worst-case airflow conditions.
Place input ceramic capacitors (typically 2 x 22 uF X7R 25 V) as close as possible to the PVin and PGND pins to minimize switching loop inductance. Use a 4-layer PCB with a dedicated ground plane and place the output inductor and capacitors adjacent to the SW and VOUT pins. PMBus traces (SCL, SDA, SALERT) should be routed away from SW node to avoid noise coupling.
The Rt/Sync pin should be connected to the external resistor with a short trace to AGND to avoid noise pickup that could shift switching frequency. Place the feedback resistor divider close to the FB pin with the upper resistor tied to VOUT_SENSE and the lower to AGND_SENSE for accurate voltage regulation. Avoid routing high-current paths under the IC to prevent ground bounce.
Do not exceed the 21 V maximum input voltage, as overvoltage can damage the internal MOSFETs and LDO. Ensure the PMBus address pins (ADR0/ADR1) are tied to AGND, VDD, or left floating according to the desired address; incorrect addressing causes communication failures. The internal soft-start capacitor setting should not be set shorter than the output capacitor charge time, or inrush current may trip OCP.
合規資訊
RoHS compliance indicated by PBF suffix per Infineon ordering convention. AEC-Q100 not applicable (industrial/commercial grade). Halogen-free status not confirmed in available snippets.
