TPS40190
- Input Operating Voltage Range: 4.5 V to 15 V
- Reference 0.591 V ±1%
- Voltage Mode Control
- Internal 5-V Regulator For Internal Housekeeping, Driver Power and Light External Loads
- Selectable Short-Circuit Protection Thresholds
- Pre-Bias Ouput Safe
- Fixed Switching Frequency of 300 kHz
- Internal Soft Start
- Small 3 mm × 3 mm, 10-Pin SON Package
- Bootstrapped Drivers for N-Channel MOSFET
- Adaptive Anti-Cross Conduction
- Internal Bootstrap Diode
- 1.2-A Drivers for Decreased Switching Loss
The TPS40190 is a cost-optimized synchronous buck controller that operates from 4.5 V to 15 V nominally, and implements a fixed frequency voltage mode power supply. The controller uses an adaptive anti-cross conduction scheme to prevent both the high-side and the rectifier MOSFET to be turned on at the same time, preventing shoot through current in the two MOSFETs.
The controller also provides a short circuit protection threshold that is user selectable between one of three values. The protection level is set with a single external resistor connected from COMP to GND. During start-up, the impedance connected to COMP is sensed, and the information is decoded to select one of the three thresholds. 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.
The TPS40190 provides strong drivers to minimize switching losses in the power stage, reducing heat build up in the MOSFETs and allowing larger MOSFETs to be used without undue switching time penalty.
技術文件
設計與開發
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TPS40190 TINA-TI Average Reference Design (Rev. C)
TPS40190 TINA-TI Transient Reference Design (Rev. B)
TPS40190 Unencrypted PSpice Transient Model Package (Rev. D)
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
- 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
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點