TPS62090 - 3A, 6V Synchronous Step-Down Converter | TI
MPN： TPS62090 ✓ 啟用中TPS62090 概覽
A synchronous step-down converter is a type of DC-DC switching regulator that steps down a higher input voltage to a lower output voltage with high efficiency. Unlike linear regulators, which dissipate excess power as heat, switching converters use high-frequency switching and energy storage elements (inductors and capacitors) to transfer energy with minimal loss. The TPS62090 belongs to the TPS6209x family of synchronous buck converters within the broader power management IC category used in portable, industrial, and automotive power rails.
Key features include the proprietary DCS-Control topology, which combines voltage-mode and current-mode control to deliver excellent load transient response and accurate output regulation. The converter achieves up to 97% efficiency and operates at a nominal 2.8 MHz switching frequency (1.4 MHz in some modes), allowing small inductors. Power Save Mode reduces quiescent current to approximately 20 uA at light loads, and 100% duty cycle support enables the lowest dropout operation.
Technically, the DCS-Control architecture enables seamless PWM-to-PFM transition, maintaining high efficiency across the full load range. Soft-start, enable, and power-good pins allow flexible power sequencing and voltage tracking configurations. Only a small inductor and ceramic capacitors are required; the 3x3 mm VQFN-16 package suits space-constrained designs.
Typical applications include point-of-load (POL) supplies for processors, FPGAs, and DSPs; power rails for smartphones, tablets, and other portable battery-powered devices; and industrial systems requiring high efficiency in a small footprint.
When designing with the TPS62090, observe the minimum output capacitance required by the DCS-Control topology for stability, minimize parasitic inductance in the power loop, and provide adequate copper area under the exposed pad for thermal dissipation.
直接替換替代品，適用於 TPS62090 — 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。
TPS62090RGTR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS62090QRGTRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TPS62095RGTR
✅ 直接替換📋 參考替代品（不在目錄中）
TLV62090RGTR
✅ 直接替換📋 參考替代品（不在目錄中）
TLV62095RGTR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS62130QRGTRQ1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TPS62090 最大額定值與電氣特性
| 拓撲 | Synchronous Step-Down (Buck) |
| Control Topology | DCS-Control |
| 輸入電壓範圍 | 2.5 V to 6 V |
| 輸出電壓範圍 | 0.8 V to VIN (adjustable via external resistors) |
| 最大輸出電流 | 3 A |
| Peak Efficiency | Up to 97% |
| 切換頻率 | 2.8 MHz nominal (1.4 MHz in some modes) |
| Quiescent Current (Power Save Mode) | 20 uA typical |
| Duty Cycle | 100% (lowest dropout mode supported) |
| 輸出數量 | 1 |
| 功能特色 | Soft-start, Enable, Power Good, Power Save Mode |
| 封裝 | 16-VQFN (RGT) with exposed pad, 3x3 mm |
| 安裝類型 | Surface Mount |
| Automotive Grade Variant | TPS62090QRGTRQ1 (AEC-Q100) |
| RoHS 狀態 | Compliant |
TPS62090 腳位配置
| 腳位 1 | SS — Soft-start / tracking programming pin |
| 腳位 2 | GND — Ground |
| 腳位 3 | SW — Switch node - connect inductor |
| 腳位 4 | VIN — Power input supply (2.5 V to 6 V) |
| 腳位 5 | EN — Enable pin, active high |
| 腳位 6 | PG — Power good output, open drain |
| 腳位 7 | FB — Feedback input for output voltage setting |
| 腳位 16 | VOUT — Regulated output voltage sense / supply |
| 腳位 Pad | Thermal Pad — Exposed pad, connect to GND for thermal dissipation |
典型應用
TPS62090 適用於 6 應用s: Point-of-Load Supply for FPGAs and Processors, Battery-Powered Portable Devices, Automotive Power Rails, Industrial Point-of-Load and Control Boards, Wireless and IoT Module Power, Low-Noise Analog and Sensor Rails.
Point-of-Load Supply for FPGAs and Processors
The TPS62090 fits POL rails for processors, FPGAs, and DSPs because its 3-A continuous output and DCS-Control topology handle fast load steps with minimal undershoot, while 2.8 MHz switching keeps the inductor small. Placed close to the core or I/O rail with ceramic output capacitors, the seamless PWM/PFM transition maintains efficiency from light load to full load. Soft-start and power-good pins support controlled power-up sequencing in multi-rail systems.
推薦
Battery-Powered Portable Devices
For smartphones, tablets, and portable instruments, the TPS62090's 20 uA power-save quiescent current preserves battery life at standby, while 97% peak efficiency maximizes runtime at load. The 2.5-6 V input accepts a single-cell Li-Ion battery across its discharge range. The 3x3 mm VQFN-16 package and small external components enable compact layouts where board space is the dominant constraint, and 100% duty cycle support squeezes the last cell voltage into the system rail.
推薦
Automotive Power Rails
The AEC-Q100 qualified TPS62090QRGTRQ1 serves 3.3 V and 1.8 V auxiliary rails in automotive ECU modules. Its 2.5-6 V input tolerates regulated automotive sub-rails, and DCS-Control delivers accurate output voltage under load transients from actuators or communication transceivers. The power-good pin enables rail monitoring in safety-related power trees, and the exposed-pad package supports thermal robustness under the extended automotive temperature profile.
推薦
Industrial Point-of-Load and Control Boards
Industrial controllers and PLC I/O cards use the TPS62090 to generate 1.8-3.3 V logic rails from 5 V or 3.3 V backplanes. The 6 V maximum input gives headroom over 5 V rails with tolerance, and the 97% efficiency reduces thermal load in sealed enclosures. Its enable pin supports brown-out control, and the wide load range with power save mode suits boards that idle between operations while remaining responsive to process events.
推薦
Wireless and IoT Module Power
IoT and wireless modules with burst transmission profiles benefit from the TPS62090's fast transient response during RF transmit pulses and its 20 uA quiescent draw during sleep. The 2.8 MHz switching frequency keeps switching harmonics away from common sub-GHz and 2.4 GHz bands, easing EMI filtering. Compact external components allow the converter to sit within millimeters of the module supply pin, minimizing trace inductance and voltage droop during peak transmit current.
推薦
Low-Noise Analog and Sensor Rails
When followed by an LDO post-regulator, the TPS62090 provides a compact high-efficiency pre-regulator for analog rails. Its 2.8 MHz switching frequency allows a small LC filter to attenuate ripple before the LDO, reducing the LDO's dropout burden and power loss. The DCS-Control topology's smooth PWM/PFM transition avoids the load-dependent frequency shifts that complicate EMI and noise budgets in precision ADC or sensor front-end supplies.
推薦
推薦產品摘要
工程參考資料，適用於 TPS62090 — 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 | TPS62090RGTR | TPS62090QRGTRQ1 | TLV62090RGTR |
|---|---|---|---|---|
| Package | VQFN-16 (RGT) | VQFN-16 (RGT) - same | VQFN-16 (RGT) - same | VQFN-16 (RGT) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 2.5 V to 6 V | 2.5 V to 6 V | 2.5 V to 6 V | 2.5 V to 5.5 V |
| Output Current | 3 A | 3 A | 3 A | 3 A |
| Control Topology | DCS-Control | DCS-Control | DCS-Control | DCS-Control (similar) |
| Automotive Grade | No | No | Yes (AEC-Q100) | No |
主要差異化特點
- Widest input range in the pin-compatible family (對比TLV62090RGTR)
- AEC-Q100 automotive option on identical silicon (對比TPS62090RGTR)
- DCS-Control transient response (對比TLV62090RGTR)
設計說明
Keep the power loop (VIN cap, SW pin, inductor, output cap, GND) as short as possible; the 2.8 MHz switching edges make parasitic inductance a source of ringing and EMI. Connect the exposed thermal pad to a solid ground plane with multiple vias under the 3x3 mm VQFN-16 package for thermal dissipation and low-inductance ground return.
Observe the minimum output capacitance required by the DCS-Control topology for loop stability, per the TI datasheet. Use low-ESR ceramic capacitors (X5R/X7R) and account for DC bias derating when selecting the effective capacitance. Verify loop stability at maximum load and lowest input voltage.
The SS pin sets the start-up ramp and can be used for voltage tracking - do not leave floating if sequencing matters. When substituting TLV62090/TPS62095 for TPS62090, remember the 5.5 V versus 6 V input limit difference; a 6 V rail with tolerance will violate the TLV/95 variants' absolute maximum ratings.
合規資訊
RoHS compliant per TI product listing. AEC-Q100 qualification applies to the TPS62090QRGTRQ1 variant only. REACH and halogen-free status not stated in provided data.
