TPS84250RKG - 7-50V, 2.5A Step-Down Power Module | TI
料号： TPS84250RKG ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.45 | $114.50 |
| 100 | $10.2 | $1,020.00 |
| 500 | $9.15 | $4,575.00 |
| 1,000 | $8.5 | $8,500.00 |
TPS84250RKG 概述
A step-down integrated power solution, sometimes called a power module or PMIC with integrated magnetics, combines the switching FETs, output inductor, and key passives inside the package, eliminating the loop-compensation and magnetic-component selection normally required when designing a discrete buck regulator. The category sits within the broader DC-DC converter family, which itself belongs to power management ICs. By absorbing magnetics into the package, module families such as the TPS84xxx significantly reduce PCB area, simplify EMI containment, and accelerate time-to-prototype compared to a discrete buck.
Key features of the TPS84250RKG include integrated MOSFETs and inductor, a switching frequency that supports small input/output capacitor count, internal soft-start with monotonic start-up into pre-biased loads, and protection features such as overcurrent, thermal shutdown, and UVLO with hysteresis. The device uses an internal feedback network so only one resistor is needed to set output voltage in the 2.5 V-15 V range, and the pinout supports standard QFN surface-mount mounting and testing.
Typical applications include 24 V industrial bus rails, factory automation PLCs, building automation, 48 V telecom point-of-load conversion, test and measurement equipment, and any noise-sensitive distributed-power bus. The wide 7 V-50 V input allows direct connection to 12 V, 24 V, 36 V, and 48 V supplies without a pre-regulator.
When designing with this device, follow TI's recommended PCB land pattern and thermal via array to keep junction temperature in spec under full-load operation. Estimate thermal performance using the datasheet theta-JA versus the user's copper area; inadequate copper or missing vias will cause thermal shutdown at 2.5 A under high VIN-VOUT conditions. Choose TPS84250RKG over a discrete buck where you need a proven, layout-compact solution in days rather than weeks.
直接替换替代料： TPS84250RKG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TPS84250RKG （相同外形与封装尺寸） ——差异在于 Input Voltage Range, Operating Temperature, Output Voltage Range, Package, Topology.
快速对比工具——选择替代料号进行并排对比：
TPS84259RKG
✅ 直接替换📋 参考替代料（不在目录中）
TPS84250RKGR
✅ 直接替换📋 参考替代料（不在目录中）
TPS84250RKGRG4
✅ 直接替换📋 参考替代料（不在目录中）
TPS82140SILR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.45 / 个
查看数据手册 →TPS84250RKG 最大额定值与电气特性
| 拓扑 | Step-down (Buck) integrated power module |
| 输入电压范围 | 7 V to 50 V |
| 输出电压范围 | 2.5 V to 15 V (adjustable) |
| 最大输出电流 | 2.5 A |
| 输出类型 | Adjustable |
| 输出数量 | 1 |
| Maximum Number of External Components | 5 |
| Integrated Magnetics | Yes (internal inductor) |
| Internal Passives | Yes (input capacitor, bootstrap, etc.) |
| 封装 | 41-B0QFN (RKG), low-profile QFN |
| 安装类型 | Surface Mount |
| 工作温度 | -40 C to +85 C |
| RoHS 状态 | Compliant |
| Lead Free | Yes |
| 软启动 | Internal, monotonic into pre-biased loads |
| Protection Features | OCP, OTP, UVLO with hysteresis |
TPS84250RKG 41-b0qfn (rkg), low-profile qfn 引脚配置指南
TPS84250RKG（41-b0qfn (rkg), low-profile qfn 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： TPS84250RKG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TPS84250RKG 适用于 6 应用s: 24V Industrial Bus Point-of-Load Conversion, Factory Automation and Motor Drive Power, Test and Measurement Equipment, Building Automation and HVAC Controllers, 48V Telecom and PoL Conversion, Portable and Handheld Industrial Devices.
24V Industrial Bus Point-of-Load Conversion
The TPS84250RKG's 7 V-50 V input tolerates 24 V nominal industrial bus voltages with full transient headroom, while delivering 2.5 A on a 2.5 V-15 V output. The integrated inductor shields adjacent traces and components from high di/dt ripple, making it ideal for PLCs, distributed industrial I/O, and process control where EMI containment and deterministic switching matter. Compared to a discrete buck, the TPS84250RKG shrinks solution footprint by roughly 50% and cuts design cycle from weeks to days per TI's reference schematic.
推荐
Factory Automation and Motor Drive Power
In 24V-powered factory automation systems, the TPS84250RKG supplies stable intermediate voltages to motor-driver logic, sensor conditioning, and communication transceivers. Its 50 V transient withstand matches long 24 V cables where inductive kickback and load-dump events occur, and the 2.5 A capability supports motion-control cards with multiple low-power rails consolidated. Integrated UVLO with hysteresis and OTP provide self-protection during hot motor-cycle events.
推荐
Test and Measurement Equipment
Lab instruments including oscilloscopes, signal generators, and bench multimeters need clean, isolated sub-rails produced from a noisy backplane supply. The TPS84250RKG's integrated magnetics simplify EMI design such that the host chassis passes CE/FCC class-A radiated emissions. With 2.5 A at 2.5 V-15 V, the module supports ADC references, FPGA core voltages, display backlighting, and analog conditioning sections on the same compact footprint.
推荐
Building Automation and HVAC Controllers
Building automation hubs, BACnet/Modbus controllers, and HVAC fan-driver interfaces run on 24 V AC/DC inputs that often carry 50 V peaks under load-dump conditions. The TPS84250RKG tolerates these peaks without a TVS pre-clamp, while providing 2.5 A to power relays, sensors, and isolated communication ports such as RS-485 and CAN. The compact QFN footprint eases fitment into DIN-rail enclosures.
推荐
48V Telecom and PoL Conversion
Distributed -48V telecom shelves step down to a regulated intermediate rail before downstream non-isolated buck converters serve sub-cards. The TPS84250RKG accepts 36 V-50 V transient-positive rails directly and converts to 5 V, 12 V, or 3.3 V rails at 2.5 A. Integrated features reduce board area, which is critical in dense shelf-power architectures with strict airflow limits.
推荐
Portable and Handheld Industrial Devices
Field service handhelds, badge readers, and ruggedized tablets powered from a 12 V-36 V source can use the TPS84250RKG to convert the wide-input range to a stable internal rail. Its 41-pin B0QFN footprint handles the high dV/dt that comes from automotive and industrial transients, sustaining 2.5 A outputs for display backlights, radios, and sensor fusion. The internal soft-start protects handheld battery systems from inrush-current stress.
推荐
推荐产品汇总
工程参考数据： TPS84250RKG ——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 | TPS84259RKG | TPS84250RKGR | TPS84250RKGRG4 | TPS82140SILR |
|---|---|---|---|---|---|
| Package | 41-B0QFN (RKG) | 41-B0QFN (RKG) - same | 41-B0QFN (RKG) - same | 41-B0QFN (RKG) - same | MicroSiP-9 (SIL) - DIFFERENT |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 7 V to 50 V | 7 V to 50 V | 7 V to 50 V | 7 V to 50 V | 3.6 V to 17 V |
| Maximum Output Current | 2.5 A | ~3 A | 2.5 A | 2.5 A | 2 A |
| Output Voltage Range | 2.5 V to 15 V | 2.5 V to 15 V | 2.5 V to 15 V | 2.5 V to 15 V | 0.9 V to 6 V |
| Integrated Inductor | Yes | Yes | Yes | Yes | Yes |
| External Components Required | as few as 5 | as few as 5 | as few as 5 | as few as 5 | as few as 4 |
| Protection Features | OCP, OTP, UVLO | OCP, OTP, UVLO | OCP, OTP, UVLO | OCP, OTP, UVLO | OCP, OTP, UVLO |
关键差异点
- Wide 7 V-50 V input range in a single QFN footprint （对比 TPS82140SILR)
- True drop-in upgrade path via same 41-pin B0QFN package family （对比 TPS84259RKG)
- Integrated inductor vs. discrete buck noise containment （对比 TPS54560QDDAQ1 (discrete buck))
设计说明
Estimated: At VIN=24 V, VOUT=5 V, and 2.5 A load, the TPS84250RKG dissipates approximately (24-5)*2.5 = 47.5 W, which would exceed safe operating area at high duty ratios. Reduce VIN near the output and provide the manufacturer's recommended thermal-via array and at least 2 square inches of top-layer copper; otherwise the internal OTP will trigger. Refer to the TI TPS84250 datasheet thermal derating curves for ambient-temperature derating above 50 C.
Solder the central exposed thermal pad of the 41-pin B0QFN package to the top-layer ground copper using a 10-12 thermal-via array stitched to inner planes. Per TI's recommended PCB layout, keep high-dV/dt SW traces inside the B0QFN landing area and route feedback away from inductor pads to avoid injection of switching ripple into the FB node. Use the manufacturer's reference land pattern from TI PCB layout guide for the TPS84xxx family.
Do not apply input voltages above 50 V absolute maximum, even during transient events; add an upstream TVS or clamp if long cables exceed 50 V inductive peaks. The RT/SS capacitor value controls startup time; a value too small causes excessive inrush to the output capacitor while an oversized value delays protection-lockout response during fault recovery. Always use the TPS84250 datasheet's recommended ceramic input capacitor with sufficient ripple current rating.
Place the input capacitor as close as possible to the TPS84250RKG VIN pins and use the recommended wide, short PGND return. Avoid routing any analog signal traces under the module footprint because the integrated inductor radiates high-frequency magnetic flux that can couple into sensitive feedback paths. Verify layout against the TPS84250 datasheet layout example before fab.
合规信息
RoHS compliant per TI product page. Not AEC-Q100 qualified; for automotive-grade equivalent within the TPS84xxx family consult TI cross-reference search.
