TPS62590DRVR - 2.25MHz 1A Step-Down Converter | Texas Instruments
MPN： TPS62590DRVR ✓ 啟用中TPS62590DRVR 概覽
A step-down converter, also known as a buck converter, is a type of DC-DC switching regulator that steps down an input voltage to a lower output voltage with high efficiency. Unlike linear regulators, which dissipate excess power as heat, switching regulators use inductive energy storage to achieve efficiencies often above 90%, making them essential in battery-powered devices where power conservation is critical. The TPS62590 belongs to the family of synchronous buck converters, which use an internal high-side and low-side MOSFET to avoid the need for an external Schottky diode, further improving efficiency.
Key features of the TPS62590DRVR include a 2.25MHz fixed switching frequency, which allows the use of small, low-cost inductors and capacitors, reducing PCB footprint. The output voltage is adjustable from 0.75V to 5.5V via an external resistor divider, with an accuracy of ±2.5% in PWM mode. The device supports 100% duty cycle operation for lowest dropout, and features a low quiescent current of 15µA (typical), extending battery life in light-load conditions. It also includes internal soft-start, overcurrent protection, and thermal shutdown.
Technically, the TPS62590 uses a current-mode control architecture with synchronous rectification, providing fast transient response and stable operation with ceramic output capacitors. The 2.25MHz switching frequency is above the AM radio band, reducing EMI concerns. The device operates over a junction temperature range of -40°C to +125°C, with an ambient temperature range of -40°C to +85°C.
Typical applications include powering DSPs, microcontrollers, and FPGAs in portable devices, as well as point-of-load (POL) converters in battery-powered equipment such as smartphones, tablets, and wireless sensors. Its high efficiency and small size make it particularly suitable for wearable devices and IoT nodes.
When designing with the TPS62590DRVR, ensure proper input and output capacitor selection (typically 10µF input and 22µF output) and place them close to the IC. The exposed pad should be soldered to a large copper area for thermal management. The feedback resistor divider should use 1% tolerance resistors to maintain output accuracy.
直接替換替代品，適用於 TPS62590DRVR — 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。
TPS62590DRVT
✅ 直接替換📋 參考替代品（不在目錄中）
TPS62591DRVR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS62592DRVR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS62593DRVR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS62590TDRVRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TPS62590DRVR
✅ 直接替換聯絡詢價
查看資料表 →TPS62590DRVR 最大額定值與電氣特性
| 功能 | Step-Down (Buck) |
| Output Current | 1 A |
| 輸入電壓範圍 | 2.5 V to 5.5 V |
| 輸出電壓範圍 | 0.75 V to 5.5 V |
| 切換頻率 | 2.25 MHz |
| 靜態電流 | 15 µA (typ) |
| Output Voltage Accuracy | ±2.5% (PWM mode) |
| Duty Cycle | 100% (max) |
| 封裝 | 6-WSON (2mm x 2mm) |
| 工作溫度範圍 | -40°C to +85°C (TA) |
| Junction Temperature Range | -40°C to +125°C |
| 安裝類型 | Surface Mount |
| 同步整流 | Yes |
| 軟啟動 | Internal |
| RoHS 狀態 | Compliant |
TPS62590DRVR 腳位配置
| 腳位 1 | SW — Switch node connection to inductor |
| 腳位 2 | GND — Ground |
| 腳位 3 | FB — Feedback voltage input |
| 腳位 4 | EN — Enable input (active high) |
| 腳位 5 | VIN — Input supply voltage |
| 腳位 6 | VOUT — Output voltage sense |
| 腳位 7 | PAD — Exposed thermal pad (GND) |
典型應用
TPS62590DRVR 適用於 6 應用s: Battery-Powered Portable Devices, Point-of-Load (POL) Converters, IoT and Wearable Devices, Industrial Control Systems, Networking Equipment, Medical Monitoring Devices.
Battery-Powered Portable Devices
The TPS62590DRVR is ideal for battery-powered portable devices such as smartphones, tablets, and handheld instruments. Its input voltage range of 2.5V to 5.5V directly supports single-cell Li-Ion batteries (3.0V-4.2V) and 2-3 AA/AAA cells. The high efficiency (up to 95%) and low quiescent current of 15µA extend battery life, while the 2.25MHz switching frequency allows the use of tiny inductors and capacitors, minimizing PCB area. The adjustable output from 0.75V to 5.5V can power various logic rails, from core voltages to I/O supplies. The 1A output current is sufficient for most portable applications, including microcontrollers, sensors, and wireless modules. The compact 2mm x 2mm WSON package fits into space-constrained designs, making it a preferred choice for modern portable electronics.
推薦
Point-of-Load (POL) Converters
The TPS62590DRVR serves as an efficient point-of-load (POL) converter in systems with a 5V or 3.3V intermediate bus. It steps down to lower voltages (e.g., 1.2V, 1.8V) for digital cores, I/O, and memory. The 2.25MHz switching frequency enables a small solution footprint, which is critical in dense PCB layouts. The synchronous rectification eliminates the need for an external Schottky diode, reducing component count and improving efficiency. The device's fast transient response ensures stable operation during load steps, which is essential for processors and FPGAs. The adjustable output voltage provides design flexibility, and the 100% duty cycle capability allows low dropout operation, maximizing efficiency when input and output voltages are close. The TPS62590DRVR is a reliable choice for POL applications in networking, industrial, and consumer electronics.
推薦
IoT and Wearable Devices
In IoT and wearable devices, power efficiency and size are paramount. The TPS62590DRVR's low quiescent current (15µA) and high efficiency at light loads extend battery life in always-on sensors and wireless transceivers. The 2.25MHz switching frequency allows the use of a small inductor (e.g., 2.2µH) and ceramic capacitors, reducing the overall solution size to fit into wearables like smartwatches and fitness trackers. The input voltage range supports coin cells (2.5V) and Li-Ion batteries (up to 5.5V). The adjustable output can power sensors, MCUs, and RF modules at their optimal voltages. The device's thermal performance, aided by the exposed pad, ensures reliable operation in compact enclosures. The TPS62590DRVR is a proven solution for battery-powered IoT nodes requiring long operational life.
推薦
Industrial Control Systems
The TPS62590DRVR is suitable for industrial control systems that require a stable, efficient power supply from a 5V or 3.3V rail. Its wide input range (2.5V to 5.5V) accommodates variations in the supply voltage, and the 2.25MHz switching frequency reduces the size of external components, saving board space in control panels. The device's overcurrent protection and thermal shutdown enhance system reliability. The adjustable output voltage allows it to power sensors, actuators, and microcontrollers at their required voltages. The operating temperature range of -40°C to +85°C covers most industrial environments. The TPS62590DRVR's high efficiency reduces heat generation, which is beneficial in sealed enclosures. It is a cost-effective solution for distributed power architectures in factory automation and process control.
推薦
Networking Equipment
In networking equipment such as routers, switches, and access points, the TPS62590DRVR provides efficient point-of-load conversion from a 5V or 3.3V bus to lower voltages for ASICs, FPGAs, and PHYs. The 2.25MHz switching frequency allows the use of small inductors, which is beneficial in high-density line cards. The device's high efficiency reduces thermal load, improving reliability in confined spaces. The adjustable output voltage supports various logic levels, and the fast transient response ensures stable operation during bursty network traffic. The TPS62590DRVR's small package (2mm x 2mm) is ideal for space-constrained designs. It also features 100% duty cycle operation, minimizing dropout when the input voltage is close to the output. This makes it a versatile choice for powering networking ICs.
推薦
Medical Monitoring Devices
The TPS62590DRVR is well-suited for medical monitoring devices such as portable patient monitors, glucose meters, and wearable health trackers. These devices require reliable, efficient power from batteries, and the TPS62590DRVR's low quiescent current (15µA) and high efficiency extend battery life, which is critical for continuous monitoring. The input voltage range supports common battery chemistries, and the adjustable output can power sensors, ADCs, and microcontrollers. The small package and minimal external components make it ideal for compact, wearable designs. The device's thermal performance ensures stable operation in close contact with the body. The TPS62590DRVR meets the reliability requirements of medical electronics, providing a clean, stable power supply for sensitive analog and digital circuits.
推薦
推薦產品摘要
工程參考資料，適用於 TPS62590DRVR — 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 | TPS62590DRVT | TPS62591DRVR | TPS62592DRVR | TPS62593DRVR | TPS62590TDRVRQ1 |
|---|---|---|---|---|---|---|
| Package | 6-WSON (2mm x 2mm) | 6-WSON (2mm x 2mm) | 6-WSON (2mm x 2mm) | 6-WSON (2mm x 2mm) | 6-WSON (2mm x 2mm) | 6-WSON (2mm x 2mm) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A |
| Input Voltage Range | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V |
| Output Voltage Range | 0.75V to 5.5V (adjustable) | 0.75V to 5.5V (adjustable) | Fixed (e.g., 1.8V) | Fixed (e.g., 1.2V) | Fixed (e.g., 3.3V) | 0.75V to 5.5V (adjustable) |
| Switching Frequency | 2.25 MHz | 2.25 MHz | 2.25 MHz | 2.25 MHz | 2.25 MHz | 2.25 MHz |
| Quiescent Current | 15 µA (typ) | 15 µA (typ) | 15 µA (typ) | 15 µA (typ) | 15 µA (typ) | 15 µA (typ) |
| Automotive Grade | No | No | No | No | No | Yes (AEC-Q100) |
主要差異化特點
- 2.25MHz switching frequency enables small external components (對比TPS62590DRVT)
- Low quiescent current of 15µA (對比TPS62590DRVT)
- Adjustable output voltage from 0.75V to 5.5V (對比TPS62591DRVR)
設計說明
Place the input capacitor (10µF ceramic) as close as possible to the VIN and GND pins to minimize input ripple and voltage spikes. The output capacitor (22µF ceramic) should be placed near the VOUT and GND pins. Use a solid ground plane and connect the exposed pad to it with multiple vias for thermal and electrical performance. Keep the feedback trace short and away from the switch node to avoid noise coupling.
The TPS62590DRVR's exposed thermal pad must be soldered to a PCB copper area to dissipate heat effectively. For typical applications with 1A output and 3.3V to 1.8V conversion, power dissipation is about 0.5W, which is manageable with a 1cm² copper area. For higher input-output differentials, increase the copper area or add thermal vias. The junction-to-ambient thermal resistance is approximately 60°C/W, so ensure the junction temperature stays below 125°C.
Do not exceed the absolute maximum input voltage of 6V. Ensure the feedback resistor divider uses 1% tolerance resistors to maintain output accuracy. The inductor should have a saturation current rating higher than the peak switch current (typically 1.5A). Avoid using inductors with too low a value, as this can cause instability. Also, ensure the EN pin is not left floating; tie it to VIN if not used.
合規資訊
RoHS compliant per TI product page. Not AEC-Q100 qualified; choose TPS62590TDRVRQ1 for automotive.
