TPS82085SILR - 3A Step-Down Converter Module | Texas Instruments
MPN： TPS82085SILR ✓ 啟用中TPS82085SILR 概覽
A step-down converter module, also known as a buck converter module, is a power management IC that efficiently converts a higher input voltage to a lower output voltage. It integrates the switching regulator, inductor, and often compensation components into a single package, reducing PCB area and design complexity. This module is part of the broader category of DC-DC converters, which are essential in power management systems for converting and regulating voltages in electronic devices.
Key features of the TPS82085SILR include a high efficiency of up to 95%, a switching frequency of 2.8MHz, and integrated soft-start to reduce inrush current. It also features enable (EN) and power-good (PG) pins for flexible power sequencing, over-temperature protection, and hiccup short-circuit protection. The MicroSiP package measures only 3.5mm x 3.5mm, enabling compact designs for space-constrained applications.
The module uses a synchronous buck topology with integrated MOSFETs and a fixed-frequency PWM control. The integrated inductor is optimized for efficiency and low profile, and the module is designed for automated assembly with standard surface-mount equipment. The high switching frequency allows the use of small external capacitors, further reducing solution size.
Typical applications include point-of-load regulation for FPGAs, DSPs, and ASICs, as well as power supplies for portable devices, industrial equipment, and networking hardware. The wide input range and adjustable output make it versatile for various voltage rails.
When designing with the TPS82085SILR, ensure proper input and output capacitor selection as per the datasheet recommendations. The EN pin can be used for sequencing, and the PG pin provides a status signal for monitoring. Thermal performance is enhanced by the exposed pad, which should be connected to a large copper area for heat dissipation.
直接替換替代品，適用於 TPS82085SILR — 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： TPS82085SILR （相同外形與佔位） — 差異在於 Input Voltage Range, Package, Switching Frequency, Output Current, Output Voltage Range.
TPS82085SILT
✅ 直接替換📋 參考替代品（不在目錄中）
TPS82084SILR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS82084SILT
✅ 直接替換📋 參考替代品（不在目錄中）
TPS826711
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TPSM82822A
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TPS82085SILR 最大額定值與電氣特性
| 輸出類型 | Adjustable |
| 輸出電壓範圍 | 0.8 V to 6 V |
| 最大輸出電流 | 3 A |
| 輸入電壓範圍 | 2.5 V to 6 V |
| 切換頻率 | 2.8 MHz |
| 效率 | Up to 95% |
| 封裝 | 8-uSiP (3.5 mm x 3.5 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40°C to +125°C |
| 致能腳位 | Yes |
| Power Good Pin | Yes |
| 軟啟動 | Integrated |
| Protection Features | Over-temperature, Hiccup short-circuit |
| RoHS 狀態 | Compliant |
| REACH Status | Compliant |
TPS82085SILR 腳位配置
| 腳位 1 | VIN — Input voltage supply |
| 腳位 2 | GND — Ground |
| 腳位 3 | EN — Enable pin (active high) |
| 腳位 4 | PG — Power good indicator (open-drain) |
| 腳位 5 | FB — Feedback pin for output voltage setting |
| 腳位 6 | VOUT — Regulated output voltage |
| 腳位 7 | VOUT — Regulated output voltage |
| 腳位 8 | GND — Ground |
典型應用
TPS82085SILR 適用於 6 應用s: FPGA Power Supply, DSP Power Supply, Portable Device Power, Industrial Equipment, Networking Hardware, ASIC Power Supply.
FPGA Power Supply
The TPS82085SILR provides a compact, high-efficiency solution for powering FPGAs. With 3A output current and adjustable voltage from 0.8V to 6V, it can supply core and I/O rails. The integrated inductor reduces board space, and the high switching frequency allows small external capacitors. The enable and power-good pins facilitate sequencing, essential for FPGA power-up requirements. Its 95% efficiency minimizes heat, making it suitable for dense designs.
推薦
DSP Power Supply
The TPS82085SILR is ideal for powering DSPs that require clean, stable voltage rails. Its low output voltage ripple and high PSRR ensure minimal noise interference with sensitive analog circuits. The module's small footprint is beneficial in space-constrained designs. With integrated protection features, it enhances system reliability. The adjustable output allows tailoring to specific DSP core voltages, and the high efficiency reduces thermal stress.
推薦
Portable Device Power
For portable devices, the TPS82085SILR offers high efficiency to extend battery life. Its small package and integrated inductor save PCB area, enabling slim designs. The wide input range supports various battery voltages. The enable pin allows power gating to reduce standby current. With up to 95% efficiency, it minimizes power loss, making it ideal for battery-powered applications.
推薦
Industrial Equipment
The TPS82085SILR is suitable for industrial equipment requiring reliable power conversion. Its operating temperature range of -40°C to +125°C ensures performance in harsh environments. The integrated protection features, including over-temperature and short-circuit, enhance system robustness. The module's high efficiency reduces heat generation, important in sealed enclosures. Its small size allows for compact control boards.
推薦
Networking Hardware
In networking hardware, the TPS82085SILR provides efficient power conversion for processors and switches. Its high switching frequency reduces the size of external components, saving board space. The power-good pin enables monitoring and sequencing in multi-rail systems. With 3A output, it can power multiple loads. The module's reliability and wide temperature range make it suitable for continuous operation.
推薦
ASIC Power Supply
The TPS82085SILR is well-suited for powering ASICs that require precise voltage regulation. Its adjustable output and high accuracy ensure stable operation. The integrated inductor and MOSFETs simplify design and reduce component count. The enable and power-good pins allow flexible power sequencing, critical for ASIC startup. With high efficiency, it minimizes thermal issues in high-density designs.
推薦
推薦產品摘要
工程參考資料，適用於 TPS82085SILR — 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 | TPS82085SILT | TPS82084SILR | TPS82084SILT | TPS826711 | TPSM82822A |
|---|---|---|---|---|---|---|
| Package | 8-uSiP | 8-uSiP | 8-uSiP | 8-uSiP | 8-uSiP | 8-uSiP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 3 A | 3 A | 2 A | 2 A | 0.6 A | 2 A |
| Output Voltage Range | 0.8 V to 6 V | 0.8 V to 6 V | 0.8 V to 6 V | 0.8 V to 6 V | 1.2 V to 5.5 V | 0.6 V to 5.5 V |
| Switching Frequency | 2.8 MHz | 2.8 MHz | 2.8 MHz | 2.8 MHz | 2.8 MHz | 2.2 MHz |
| Efficiency | Up to 95% | Up to 95% | Up to 95% | Up to 95% | Up to 90% | Up to 95% |
| Enable Pin | Yes | Yes | Yes | Yes | Yes | Yes |
| Power Good Pin | Yes | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- Higher output current (3A) compared to TPS82084SILR (2A) (對比TPS82084SILR)
- Integrated inductor simplifies design (對比TPSM82822A)
- Higher efficiency (up to 95%) (對比TPS826711)
設計說明
Place input and output capacitors as close to the VIN and VOUT pins as possible. Use 10µF ceramic for input and 22µF for output as recommended. Ensure a solid ground plane under the module to minimize parasitic inductance and improve thermal performance.
The exposed pad on the bottom of the MicroSiP package must be soldered to a large copper area for heat dissipation. For high load currents, provide thermal vias to the ground plane. The junction-to-ambient thermal resistance is typically 40°C/W, so at 3A with 1V dropout, power dissipation is 3W, requiring adequate copper area.
Do not exceed the absolute maximum input voltage of 6V. Ensure the output capacitors have sufficient voltage rating and low ESR. The EN pin must not be left floating; tie it to VIN if not used. The PG pin is open-drain and requires a pull-up resistor to a voltage no higher than 6V.
合規資訊
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified. Lead-free per TI's green packaging.
