TPS2291L02-EVM - 5.5V 2A Load Switch Eval Board | Texas Instruments
料号： TPS2291L02-EVM ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $49 | $49.00 |
| 10 | $46.55 | $465.50 |
| 100 | $44.1 | $4,410.00 |
| 500 | $41.65 | $20,825.00 |
| 1,000 | $39.2 | $39,200.00 |
TPS2291L02-EVM 概述
A load switch is a power management IC that connects and disconnects a power rail from a load using an integrated MOSFET pass element controlled by a logic-level ON pin. In the power-management hierarchy (load switch -> power distribution switch -> power management IC -> semiconductor), load switches sit between a supply and its load to enable power sequencing, inrush control, and rail gating in battery-powered and multi-rail systems.
Key features demonstrated by this EVM include the TPS2291L02's N-channel MOSFET pass element operating from a 1.05 V to 5.5 V input range, a maximum continuous current of 2 A, controlled turn-on time to limit inrush current, and quick output discharge (QOD) that actively pulls the output low when the switch is disabled. The 22 mOhm typical on-resistance minimizes voltage drop on low-voltage, high-current rails.
Technically, the TPS2291L02 integrates the pass FET, gate-drive control, and quick output discharge function in a compact 4-pin WCSP (0.62 mm x 0.62 mm) package, reducing solution size versus discrete MOSFET plus driver solutions. The EVM routes VIN and VOUT with wide, low-resistance copper traces so the board itself does not limit continuous current during testing.
Typical evaluation scenarios include characterizing turn-on inrush into capacitive loads, measuring dropout and on-resistance at 2 A loads, verifying quick output discharge timing, and validating power-sequencing behavior in portable, battery-powered, and multi-rail industrial designs before committing to PCB layout.
When testing, keep input and output lead inductance low, use short thick wires for high-current connections, and evaluate thermal behavior at sustained 2 A loads. Verify ON-pin logic thresholds against your controller's GPIO levels.
This page synthesizes distributor availability, the load switch's headline parameters, evaluation guidance, and comparable TI load-switch EVMs not consolidated on the manufacturer datasheet alone.
直接替换替代料： TPS2291L02-EVM ——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：
TPS22975EVM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS22924EVM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS22860EVM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS22918EVM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS22953EVM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS2291L02-EVM 规格参数（制造商发布）
| Product Type | Evaluation Module (EVM) |
| Device Under Test | TPS2291L02 load switch |
| Input Voltage Range (DUT) | 1.05 V to 5.5 V |
| Maximum Continuous Current (DUT) | 2 A |
| On-Resistance RON (DUT) | 22 mOhm |
| Quiescent Current IQ (DUT) | 90 nA |
| Quick Output Discharge | Yes |
| Controlled Turn-On Time | Yes |
| DUT Package | 4-pin WCSP (0.62 mm x 0.62 mm), 0.35 mm pin pitch option |
| Pass Element | N-channel MOSFET, high-side |
| Board Connections | VIN and VOUT rated for high continuous current |
| PCB Layout | Low-resistance current pathway into and out of the device under test |
| Included Documentation | TPS2291L02 Evaluation Module user guide (SLVUDE0) |
TPS2291L02-EVM 接口与连接器
TPS2291L02-EVM 提供制造商发布的以下接口和连接器：功率输入。扩展排针引脚定义、连接器引脚编号和电气限值在制造商文档中定义。
| 功率输入 | 1.05 V to 5.5 V |
请参阅 制造商文档 以查看完整的扩展排针引脚和连接器引脚编号。
功率与热特性
| 功率输入 | 1.05 V to 5.5 V |
TPS2291L02-EVM 的功率输入和热参数（由制造商发布）。
典型应用
TPS2291L02-EVM 适用于 6 应用s: Battery-Powered Portable Device Rail Gating, Multi-Rail Power Sequencing in Processors and SoCs, Inrush Current Limiting for Capacitive Loads, 5V Peripherals and USB Accessory Power Switching, Industrial Sensor and IO Module Power Control, RF and Wireless Module Power Switching.
Battery-Powered Portable Device Rail Gating
Battery-powered products such as wearables, handheld meters, and portable instruments need to disconnect idle subsystems to squeeze every microamp from the cell. The TPS2291L02 evaluated on this EVM contributes only 90 nA of quiescent current when enabled, so rail gating no longer dominates the sleep budget. Its 1.05 V to 5.5 V input range covers Li-ion (3.0 V to 4.2 V), LiFePO4, and regulated 3.3 V or 5 V rails directly. On the EVM, engineers can verify controlled turn-on inrush into the board's input capacitance, measure the 22 mOhm typical on-resistance impact on low-voltage rails, and confirm quick output discharge pulls the switched rail to ground within the required settle time before the MCU enters sleep. This de-risks the layout of the tiny 4-pin WCSP device before it is committed to the production PCB.
推荐
Multi-Rail Power Sequencing in Processors and SoCs
Application processors, FPGAs, and SoCs require core, I/O, and analog rails to power up and down in a defined sequence to avoid latch-up. The TPS2291L02 on this EVM provides the building blocks for sequencing: a logic-controlled ON pin for GPIO-driven enable ordering and quick output discharge that actively pulls a disabled rail low so it never floats into an undefined state. With a 1.05 V to 5.5 V input range and 2 A continuous capability at 22 mOhm, the switch handles high-current core rails while dropping only about 44 mV at full load. On the EVM, designers can capture rail-to-rail timing skew with a multi-channel scope, tune turn-on ramps into realistic capacitive loads, and verify discharge timing - all measurements that transfer directly to the production sequencing design.
推荐
Inrush Current Limiting for Capacitive Loads
Modules, displays, RF front ends, and backup storage often present tens to hundreds of microfarads of input capacitance, and a hard switch would draw destructive inrush spikes that collapse the supply or trip protection. The TPS2291L02 implements controlled turn-on time, soft-starting its N-channel MOSFET pass element so the output voltage ramps smoothly and inrush is bounded by dV/dt rather than a raw contact event. With 5.5 V maximum input and 2 A continuous capability at 22 mOhm on-resistance, it covers most 5 V and Li-ion subsystem rails. The EVM is the ideal tool for this characterization because its VIN and VOUT routing is designed for high continuous current with low resistance, so the measured inrush waveform reflects the device soft-start behavior rather than board parasitics. Engineers can sweep load capacitance and log peak current across temperature on the bench.
推荐
5V Peripherals and USB Accessory Power Switching
5 V accessory rails - USB hubs, sensor boards, display backlights, and industrial IO modules - benefit from an electronically controlled high-side switch for hot-plug protection and fault isolation. The TPS2291L02 accepts the full 5 V rail with margin (5.5 V maximum input) and passes up to 2 A continuous with only 22 mOhm typical on-resistance, so a fully loaded port sees roughly 44 mV of drop at room temperature. Quick output discharge ensures the accessory connector does not remain energized at an undefined floating voltage after software disables the port. Evaluating on the TPS2291L02-EVM lets designers verify hot-plug inrush into cable and device capacitance, confirm thermal behavior at sustained 2 A loads, and validate GPIO logic-level compatibility with the host controller before routing the WCSP device into the end-product layout.
推荐
Industrial Sensor and IO Module Power Control
Industrial IO modules, 4-20 mA transmitters, and distributed sensor nodes increasingly switch individual sensor supplies so a faulted channel can be isolated without taking down the node. The TPS2291L02 evaluated here offers a 1.05 V to 5.5 V input range suited to 3.3 V and 5 V logic rails, 2 A continuous capability at 22 mOhm on-resistance, and 90 nA quiescent current that keeps panel standby budgets intact across many switched channels. Controlled turn-on limits inrush when capacitive sensor front ends are re-enabled after a fault. The EVM's low-resistance, high-current VIN/VOUT routing replicates production current paths, so engineers can measure channel dropout at full load, verify quick output discharge timing between channels, and validate the ON-pin logic thresholds against standard 3.3 V and 5 V PLC GPIO levels before production layout.
推荐
RF and Wireless Module Power Switching
Wi-Fi, Bluetooth, and cellular modules draw high burst currents during transmit - often exceeding 1 A peaks on a 3.3 V to 4.2 V rail - yet must draw almost nothing between connections. The TPS2291L02 addresses both needs: 2 A continuous capability through a 22 mOhm N-channel MOSFET keeps voltage drop low during bursts (about 44 mV at full load), while 90 nA quiescent current preserves battery life in standby. Quick output discharge fully de-energizes the module between use cycles, preventing leakage through module input capacitors and enabling clean re-enumeration. Evaluating on the TPS2291L02-EVM lets RF engineers verify that the switch does not sag during transmit bursts, measure turn-on ramp compatibility with module power-up specifications, and confirm discharge timing for reliable module reset - results that map directly to the production WCSP layout.
推荐
推荐产品汇总
工程参考数据： TPS2291L02-EVM ——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 | TPS22975EVM | TPS22924EVM | TPS22860EVM | TPS22918EVM | TPS22953EVM |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | Evaluation board (DUT: 4-pin WCSP 0.62x0.62 mm) | Evaluation board | Evaluation board | Evaluation board | Evaluation board | Evaluation board |
| DUT Max Input Voltage | 5.5 V | 5.7 V | 3.6 V | 6.5 V | 5.5 V | 5.5 V |
| DUT Max Continuous Current | 2 A | 6 A | 400 mA | 3 A | 2 A | 5.3 A |
| DUT On-Resistance | 22 mOhm | 13.5 mOhm | 105 mOhm | 68 mOhm | 84 mOhm | 16 mOhm |
| Quick Output Discharge | Yes | Yes | Yes | Yes | Yes | Yes |
| Controlled Turn-On | Yes | Yes | Yes | Yes (adjustable via CT) | Yes | Yes (adjustable) |
关键差异点
- Ultra-low 90 nA quiescent current DUT （对比 TPS22918EVM)
- Lowest drop in the 2 A class （对比 TPS22918EVM)
- Purpose-built high-current evaluation routing （对比 TPS22924EVM)
- Trade-off: lower current ceiling than higher-power TI EVMs （对比 TPS22975EVM)
设计说明
When testing high continuous currents near the 2 A DUT limit, use short, thick (18 AWG or better) leads from the bench supply to the EVM VIN terminals and from VOUT to the load. The EVM's internal VIN/VOUT routing is designed for low resistance, but external test leads can add tens of milliohms, distorting on-resistance and dropout measurements. Use remote sense at the EVM terminals to eliminate lead-drop error. Estimated: at 2 A, even 50 mOhm of external lead resistance adds 100 mV of error - larger than the switch's own 22 mOhm drop (44 mV).
Do not exceed the TPS2291L02's 5.5 V absolute input range; a bench supply set to a common 6 V lab default can damage the DUT. Verify supply voltage with a meter before connecting. Also confirm ON-pin logic levels: drive the enable with a clean logic source within the datasheet VIH/VIL thresholds rather than a floating wire, which can cause erratic switching. Finally, when evaluating quick output discharge, note that residual charge in large output capacitors discharges through the QOD path - allow adequate settle time before re-enabling.
Estimated: at 2 A load with the datasheet 22 mOhm typical on-resistance, the DUT dissipates approximately I^2 x R = 4 x 0.022 = 88 mW, so the EVM does not require heatsinking at full load. However, this assumes a nominal device; production spread and elevated ambient can raise drop modestly. For sustained full-load soak tests, allow airflow around the board and monitor the DUT area by IR thermometer to confirm it stays comfortably below the device's rated temperature limits.
For clean inrush measurements, use an oscilloscope current probe clamped around the VOUT lead, or a low-value (10-20 mOhm) non-inductive shunt with a differential probe. Avoid measuring inrush across long ground leads - inductance in the probe path produces ringing that overstates the peak. The TPS2291L02's controlled turn-on produces a smooth soft-start ramp; a distorted measurement trace usually indicates probe setup, not device behavior.
合规信息
Compliance status for the EVM board was not stated in the retrieved web data; consult the TI product page for the board's environmental certifications.
