計算工具
產品規格表
TPS40195
- Input Operating Voltage Range: 4.5 V to 20 V
- Output Voltage as Low as 0.591 V ±0.5%
- 180° Bi-Directional Out-of-Phase Synchronization
- Internal 5-V Regulator
- High and Low MOSFET Sense Overcurrent
- 100-kHz to 600-kHz Switching Frequency
- Enable and Power Good
- Programmable UVLO and Hysteresis
- Thermal Shutdown at 150°C
- Selectable Soft Start
- Prebias Output Safe
The TPS40195 is a flexible synchronous buck controller that operates from a nominal 4.5-V to 20-V supply. This controller implements voltage mode control with the switching frequency adjustable from 100 kHz to 600 kHz. Flexible features found on this device include selectable soft-start time, programmable short-circuit limit, programmable undervoltage lockout (UVLO) and synchronization capability. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Overcurrent detection is done by sensing the voltage drop across the low-side MOSFET when it is on, and comparing it with a user-programmable threshold.
The threshold is set with a single external resistor connected from ILIM to GND. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This provides limited power dissipation in the event of a sustained fault. Synchronization on this device is bi-directional. Devices can be synchronized 180° out of phase to a chosen master TPS40195 running at a fixed 250 kHz or 500 kHz, or can be synchronized to an outside clock source anywhere in the 100 kHz to 600 kHz range.
技術文件
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檢視所有 5 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS40195 4.5-V to 20-V Synchronous Buck Controller With Synchronization and Power Good datasheet (Rev. F) | PDF | HTML | 2019年 6月 7日 |
| User guide | TPS40195 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 2022年 1月 10日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Enabling Multiple TPS4019x Devices | 2012年 3月 29日 | ||
| More literature | TPS40195RGY Test Report | 2008年 2月 15日 |
設計與開發
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開發板
TPS40195EVM-001 — TPS40195 20V 輸入、3.3V 輸出、20A 評估模組
The TPS40195EVM evaluation module (EVM) is a synchronous buck converter providing a fixed 3.3V output at up to 20A from a 12V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for start up. The module uses the TPS40195 Mid-Voltage (...)
模擬型號
TPS40195 TINA-TI Transient Reference Design (Rev. B)
SLVC182B.ZIP (331 KB) - TINA-TI Reference Design
模擬型號
TPS40195 Unencrypted PSpice Average and Transient Model Package (Rev. B)
SLVC181B.ZIP (391 KB) - PSpice Model
| 封裝 | 引腳 | 下載 |
|---|---|---|
| TSSOP (PW) | 16 | 檢視選項 |
| VQFN (RGY) | 16 | 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