TPS82085SILR - 3A Step-Down Converter Module | Texas Instruments
料号： TPS82085SILR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.14 | $8.14 |
| 10 | $7.32 | $73.20 |
| 100 | $6.51 | $651.00 |
| 500 | $5.7 | $2,850.00 |
| 1,000 | $5.08 | $5,080.00 |
TPS82085SILR 概述
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.
直接替换替代料： TPS82085SILR ——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： TPS82085SILR （相同外形与封装尺寸） ——差异在于 Input Voltage Range, Package, Switching Frequency, Output Current, Output Voltage Range.
快速对比工具——选择替代料号进行并排对比：
TPS82085SILT
✅ 直接替换📋 参考替代料（不在目录中）
TPS82084SILR
✅ 直接替换📋 参考替代料（不在目录中）
TPS82084SILT
✅ 直接替换📋 参考替代料（不在目录中）
TPS826711
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.3 / 个
查看数据手册 →TPSM82822A
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.19 / 个
查看数据手册 →TPS82085SILR 最大额定值与电气特性
| 输出类型 | Adjustable |
| 输出电压范围 | 0.8 V to 6 V |
| 最大输出电流 | 3 A |
| 输入电压范围 | 2.5 V to 6 V |
| 开关频率 | 2.8 MHz |
| 效率 | Up to 95% |
| 封装 | 8-uSiP (3.5 mm x 3.5 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40°C to +125°C |
| 使能引脚 | Yes |
| Power Good Pin | Yes |
| 软启动 | Integrated |
| Protection Features | Over-temperature, Hiccup short-circuit |
| RoHS 状态 | Compliant |
| REACH Status | Compliant |
TPS82085SILR 引脚配置
| 引脚 1 | VIN — Input voltage supply |
| 引脚 2 | GND — Ground |
| 引脚 3 | EN — Enable pin (active high) |
| 引脚 4 | PG — Power good indicator (open-drain) |
| 引脚 5 | FB — Feedback pin for output voltage setting |
| 引脚 6 | VOUT — Regulated output voltage |
| 引脚 7 | VOUT — Regulated output voltage |
| 引脚 8 | GND — Ground |
典型应用
TPS82085SILR 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： TPS82085SILR ——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 | 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 |
关键差异点
- Higher output current (3A) compared to TPS82084SILR (2A) （对比 TPS82084SILR)
- Integrated inductor simplifies design （对比 TPSM82822A)
- Higher efficiency (up to 95%) （对比 TPS826711)
设计说明
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.
合规信息
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified. Lead-free per TI's green packaging.
