TPS54620 - 6A Synchronous Buck Converter | Texas Instruments
MPN： TPS54620 ✓ 啟用中TPS54620 概覽
A synchronous buck converter is a type of DC-DC switching regulator that steps down voltage with high efficiency by using two transistors (high-side and low-side) that switch alternately, minimizing conduction losses compared to asynchronous designs. It belongs to the broader category of voltage regulators, which are essential in power management ICs for converting and stabilizing supply voltages in electronic systems. The TPS54620 integrates both MOSFETs, reducing external component count and board space.
Key features include integrated 26 mΩ and 19 mΩ MOSFETs, a split power rail allowing 1.6 V to 17 V on PVIN, a switching frequency range of 200 kHz to 1.6 MHz, synchronization to an external clock, and a low 2-μA shutdown quiescent current. These features enable high efficiency across a wide load range and flexible design for noise-sensitive applications.
Technically, the TPS54620 uses a current-mode control architecture with pulse-by-pulse current protection, ensuring robust operation under overload conditions. The 0.8-V reference with ±1% accuracy over temperature provides precise output regulation. The device also includes thermal shutdown and overcurrent protection, enhancing reliability in demanding environments.
Typical applications include industrial power supplies, automotive infotainment, telecom equipment, and point-of-load converters for FPGAs and DSPs. Its wide input range and high output current make it suitable for 12-V bus systems and battery-powered devices.
When designing with the TPS54620, ensure proper input and output capacitor selection to minimize ripple and maintain stability. The switching frequency can be synchronized to an external clock to avoid beat frequencies in multi-rail systems. Thermal management is critical; the QFN package's exposed pad must be soldered to a sufficient copper area for heat dissipation.
直接替換替代品，適用於 TPS54620 — 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。
TPS54320RGYR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS54821RHLR
⚡ 相同封裝📋 參考替代品（不在目錄中）
SGM61164
✅ 直接替換📋 參考替代品（不在目錄中）
TPS543620
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS62914
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS54620 最大額定值與電氣特性
| 輸入電壓範圍 | 4.5 V to 17 V |
| 輸出電壓範圍 | 0.8 V to 15 V (adjustable) |
| 最大輸出電流 | 6 A |
| 參考電壓 | 0.8 V ±1% |
| 切換頻率 | 200 kHz to 1.6 MHz |
| 高側 MOSFET 導通電阻 | 26 mΩ |
| 低側 MOSFET 導通電阻 | 19 mΩ |
| Shutdown Quiescent Current | 2 μA |
| PVIN Range | 1.6 V to 17 V |
| 封裝 | 14-VFQFN (RGY) 3.5 mm × 3.5 mm |
| 工作溫度範圍 | -40°C to +125°C |
| Synchronization | External clock |
| Protection Features | Pulse-by-pulse current limit, thermal shutdown |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
TPS54620 腳位配置
| 腳位 1 | BOOT — Bootstrap capacitor connection for high-side FET driver |
| 腳位 2 | VIN — Input supply voltage |
| 腳位 3 | PVIN — Power input for high-side FET |
| 腳位 4 | EN — Enable pin (active high) |
| 腳位 5 | RT/CLK — Switching frequency set or external clock sync |
| 腳位 6 | COMP — Compensation network connection |
| 腳位 7 | FB — Feedback voltage sense |
| 腳位 8 | GND — Ground |
| 腳位 9 | SW — Switch node output |
| 腳位 10 | SW — Switch node output |
| 腳位 11 | SW — Switch node output |
| 腳位 12 | GND — Ground |
| 腳位 13 | GND — Ground |
| 腳位 14 | GND — Ground (exposed pad) |
典型應用
TPS54620 適用於 6 應用s: Industrial Power Supplies, Automotive Infotainment, Telecom Equipment, Point-of-Load Converters, Battery-Powered Devices, FPGA and DSP Power.
Industrial Power Supplies
The TPS54620's 4.5-V to 17-V input range and 6-A output make it ideal for industrial power supplies converting 12-V or 24-V buses to lower voltages. Its high efficiency reduces heat dissipation, and the small QFN package saves board space. The integrated MOSFETs simplify design, while the adjustable output down to 0.8 V supports various logic levels. Synchronization to an external clock helps avoid interference in noisy industrial environments.
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Automotive Infotainment
In automotive infotainment systems, the TPS54620 provides a stable 5-V or 3.3-V rail from the 12-V battery. Its wide input range handles voltage transients, and the high switching frequency allows small external components, saving PCB area. The low shutdown quiescent current (2 μA) helps reduce battery drain when the system is off. The device's robust protection features ensure reliable operation in harsh automotive environments.
推薦
Telecom Equipment
Telecom equipment often requires multiple voltage rails from a 12-V or 48-V input. The TPS54620's 6-A output can power FPGAs, ASICs, and line cards. Its synchronization feature allows multiple converters to operate at the same frequency, reducing beat noise. The high efficiency minimizes heat in densely packed racks, and the small package enables high power density.
推薦
Point-of-Load Converters
The TPS54620 is ideal for point-of-load (POL) converters that step down a 5-V or 12-V bus to core voltages for DSPs, FPGAs, and microcontrollers. Its 0.8-V reference with ±1% accuracy ensures precise voltage regulation for low-voltage digital cores. The integrated MOSFETs and small QFN package reduce component count and board space, enabling compact POL designs. The adjustable output and external synchronization provide design flexibility.
推薦
Battery-Powered Devices
In battery-powered devices, the TPS54620's low shutdown quiescent current (2 μA) extends standby time. Its wide input range accommodates battery voltage variations, and the high efficiency maximizes battery life during operation. The small package is suitable for portable equipment. The device can be synchronized to avoid interference with sensitive RF circuits.
推薦
FPGA and DSP Power
FPGAs and DSPs require multiple low-voltage, high-current rails. The TPS54620 can provide a 6-A rail at 1.0 V or 1.2 V with tight regulation. Its fast transient response handles dynamic load changes, and the synchronization feature allows multiple converters to operate in phase, reducing input ripple. The small package and integrated FETs simplify layout for dense designs.
推薦
推薦產品摘要
工程參考資料，適用於 TPS54620 — 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 | TPS54320RGYR | TPS54821RHLR | SGM61164 |
|---|---|---|---|---|
| Package | 14-VFQFN (RGY) | 14-VFQFN (RGY) | 14-VFQFN (RHL) | 14-VFQFN (RGY) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | SGMC |
| Output Current | 6 A | 3 A | 8 A | 6 A |
| Pin Compatibility | Reference | Pin-compatible | Not pin-compatible | Pin-compatible |
主要差異化特點
- Higher output current (6 A) than TPS54320 (3 A) (對比TPS54320RGYR)
- Lower on-resistance MOSFETs (26 mΩ/19 mΩ) than TPS54320 (對比TPS54320RGYR)
- Pin-compatible with TPS54320 (對比TPS54320RGYR)
設計說明
Place input and output capacitors close to the IC pins to minimize parasitic inductance. Use a 10-μF ceramic capacitor for input and a 22-μF ceramic capacitor for output. The exposed pad must be soldered to a large copper area for thermal dissipation.
The TPS54620 in a 3.5-mm QFN package can dissipate significant power at high currents. Ensure adequate copper area on the PCB and consider thermal vias under the exposed pad. For 6-A output at low input-output differential, efficiency is high, but at high differentials, power loss may require heatsinking.
Do not exceed the absolute maximum input voltage of 17 V. The PVIN pin can operate from 1.6 V to 17 V, but VIN must be within 4.5 V to 17 V. Ensure the bootstrap capacitor is placed correctly for high-side FET driving. Use a proper compensation network per the datasheet to ensure stability.
合規資訊
RoHS compliant per TI product page. Not AEC-Q100 qualified; automotive-grade variants may exist.
