TPS5618
- ±1% Reference Over Full Operating Temperature Range
- Synchronous Rectifier Driver for >90% Efficiency
- Fixed Output Voltage Options of 1.5 V,
1.8 V, 2.5 V, and 3.3 V - User-Selectable Hysteretic-Type Control
- Low Supply Current...3 mA Typ
- 11.4-V to 13-V Input Voltage Range, VCC
- Power Good Output
- Programmable Soft-Start
- Overvoltage/Overcurrent Protection
- Active Deadtime Control
The TPS5615 family of synchronous-buck regulator controllers provides an accurate supply voltage to DSPs. The output voltage is internally set by a resistive divider with an accuracy of 1% over the full operating temperature range. A hysteretic controller with user-selectable hysteresis is used to dramatically reduce overshoot and undershoot caused by load transients. Propagation delay from the comparator inputs to the output drivers is less than 250 ns. Overcurrent shutdown and crossover protection for the output drivers combine to eliminate destructive faults in the output FETs. PWRGD monitors the output voltage and pulls the open-collector output low when the output drops below 93% of the nominal output voltage. An overvoltage circuit disables the output drivers if the output voltage rises 15% above the nominal value. The inhibit pin can be used to control power sequencing. Inhibit and undervoltage lockout assures that the 12-V supply voltage and system supply voltage (5 V or 3.3 V) are within proper operating limits before the controller starts. The output driver circuits include 2-A drivers with internal 8-V gate-voltage regulators that can easily provide sufficient power for today's high-powered DSPs. The high-side driver can be configured either as a ground-referenced driver or as a floating bootstrap driver. The TPS5615 family is available in a 28-pin TSSOP PowerPadTM
PowerPAD is a trademark of Texas Instruments Incorporated.package. It operates over a junction temperature range of 0°C to 125°C.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Synchronous-Buck Hysterectic Regulator Controller datasheet (Rev. B) | 2000年 7月 20日 | |
Application note | Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) | 2019年 3月 12日 | ||
Application note | Power Supply Sequencing Solutions for Dual Supply Voltage DSPs (Rev. A) | 2000年 7月 5日 | ||
Application brief | Using the TPS56xx To Power DSPs (Rev. A) | 2000年 3月 7日 | ||
User guide | High-Density Synchronous Buck Converter Design Using TPS56xx Controllers | 1999年 6月 7日 | ||
Application note | Understanding Buck Power Stages In Switchmode Power Supplies | 1999年 3月 4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)。
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
HTSSOP (PWP) | 28 | 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