計算工具
SN6505A
- Push-pull driver for transformers
- Wide input voltage range: 2.25 V to 5.5 V
- High output drive: 1 A at 5 V supply
- Low R ON 0.25 Ω max at 4.5 V supply
- Ultra-low EMI
- Spread spectrum clocking
- Precision internal oscillator options: 160 kHz ( SN6505A) and 420 kHz ( SN6505B)
- Synchronization of multiple devices with external clock input
- Slew-rate control
- 1.7 A Current-limit
- Low shutdown current: <1 µA
- Thermal shutdown
- Wide temperature range: –55°C to 125°C
- Small 6-Pin SOT23 (DBV) package
- Soft-start to reduce In-rush current
The SN6505x is a low-noise, low-EMI push-pull transformer driver, specifically designed for small form factor, isolated power supplies. It drives low-profile, center-tapped transformers from a 2.25 V to 5 V DC power supply. Ultra-low noise and EMI are achieved by slew rate control of the output switch voltage and through Spread Spectrum Clocking (SSC). The SN6505x consists of an oscillator followed by a gate drive circuit that provides the complementary output signals to drive ground-referenced N-channel power switches. The device includes two 1-A Power-MOSFET switches to ensure start-up under heavy loads. The switching clock can also be provided externally for accurate placement of switcher harmonics, or when operating with multiple transformer drivers. The internal protection features include a 1.7 A current limiting, under-voltage lockout, thermal shutdown, and break-before-make circuitry. SN6505x include s a soft-start feature that prevents high inrush current during power up with large load capacitors. SN6505A has a 160 kHz internal oscillator for applications that need to minimize emissions whereas SN6505B has a 420 kHz internal oscillators for applications that require higher efficiency and smaller transformer size. The SN6505x is available in a small 6-pin SOT23/DBV package. The device operation is characterized for a temperature range from –55°C to 125°C.
技術文件
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檢視所有 9 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | SN6505x Low-Noise 1-A Transformer Drivers for Isolated Power Supplies datasheet (Rev. I) | PDF | HTML | 2023年 8月 9日 |
| Product overview | Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications | PDF | HTML | 2022年 11月 9日 | |
| Application note | How to Reduce Emissions in Push-Pull Isolated Power Supplies (Rev. A) | PDF | HTML | 2021年 10月 5日 | |
| Application brief | How to Isolate Signal and Power for an RS-485 System (Rev. C) | PDF | HTML | 2021年 5月 25日 | |
| Application brief | How to Isolate Signal and Power in Isolated CAN Systems (Rev. C) | PDF | HTML | 2021年 5月 25日 | |
| Application brief | How to Isolate Signal and Power for I2C (Rev. B) | PDF | HTML | 2021年 5月 19日 | |
| Application note | Isolated CAN Reference Design (Rev. E) | 2020年 7月 22日 | ||
| Application note | Signal and Power Isolation with 3.3 V / 5 V Input and 12 V / 15 V Output | 2018年 10月 17日 | ||
| EVM User's guide | SN6505A and SN6505B Evaluation Module User's Guide | 2015年 12月 10日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
SN6505AEVM — 用於隔離式電源的 SN6505A 低雜訊 1A 變壓器驅動器評估模組 (160 kHz CLK)
The evaluation module (EVM), featuring the SN6505A transformer driver, also contains a small form-factor transformer, simple rectifier circuit, and voltage regulator that can be used to simulate a complete isolated power-supply system suitable for many applications.
使用指南: PDF
開發板
SN6507DGQEVM — 適用於低放射、500-mA 推挽式隔離電源供應器的 SN6507 評估模組
SN6507DGQEVM 允許使用者在隔離電源供應器應用中評估 SN6507 推挽式隔離變壓器驅動器的性能和功能。
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
參考設計
TIDA-010065 — 基於高效、低排放、隔離式 DC/DC 轉換器的類比輸入模組參考設計
此參考設計為一簡化架構，可產生隔離式電源供應，適用於測量隔離電壓與電流的隔離式放大器。具 5-V 輸入之強化隔離操作的完全整合式 DC/DC 轉換器，並具備可設定 5-V 或 5.4-V 輸出 (適用於低壓降穩壓器 (LDO) 的空餘空間) 可產生隔離電源。連接到 ±50-mV 輸入範圍隔離放大器，且配置爲通道隔離輸入的分流，可測量電流。連接到 ±250-mV 或 ±12-V 輸入範圍隔離放大器，且配置爲群組隔離輸入的潛在分頻器，可測量電壓。隔離放大器介面直接輸出至 24 位 Δ Σ 類比轉數位轉換器 (ADC)，或使用增益放大器擴展至 (...)
參考設計
TIDA-01590 — 適用於太陽能匯流箱的 1200V 隔離式 I2C 高壓側電流感測參考設計
This reference design is an isolated high-side current sensing design for a smart combiner box in a grounded or ungrounded system. The current sensing topology enables multichannel, sub ±1% error, isolated current sensing for high-voltage systems up to 1200-VDC, limited by the DC/DC (...)
參考設計
TIDA-00732 — 可實現最大 SNR 和採樣率的 18 位元 2 MSPS 隔離式資料採集參考設計
This “18-bit, 2-Msps Isolated Data Acquisition Reference Design to achieve maximum SNR and sampling rate” illustrates how to overcome performance-limiting challenges typical of isolated data acquisition system design:
- Maximizing sampling rate by minimizing propagation delay introduced by digital (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| SOT-23 (DBV) | 6 | 檢視選項 |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。