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标题: 基于TPS61046的采用 WCSP 封装的 28V 输出电压升压转换器 [打印本页]
作者: iczoom188 时间: 2018-11-14 16:52
标题: 基于TPS61046的采用 WCSP 封装的 28V 输出电压升压转换器
1 特性
输入电压范围:1.8V 至 5.5V,启动后为 1.6V
输出电压高达 28V
集成有功率二极管和隔离开关
900mA(典型值)开关电流
输入电压 3.6V、输出电压 12V 时效率高达 85%
500nA 超低关断电流
±2% 的输出电压精度
轻负载状态下进入节能工作模式
内部 10ms 软启动时间
关断时输入与输出真正断开
输出短路保护
输出过压保护
热关断保护
0.80mm × 1.20mm WCSP 封装
2 应用
PMOLED 电源
可穿戴式设备
便携式医疗设备
传感器电源
3 说明
TPS61046 是一款高度集成的升压转换器,专门针对 PMOLED 面板和传感器模块等需要高电压和小解决方案尺寸的应用而设计。 TPS61046 集成有 30V 电源开关,输入/输出隔离开关和功率二极管。 该器件可将来自一节锂离子电池或两节碱性电池(串联)的输入电压转换成高达 28V 的输出电压。
TPS61046 的工作开关频率为 1.0MHz。 因此只需使用很少的外部元件。 通过将 TPS61046 的 FB 引脚和 VIN 引脚相连,可将其默认内部输出电压设置为 12V。 因此,只需要三个外部元件即可获得 12V 输出电压。 TPS61046 采用 WCSP 封装,因此整体解决方案尺寸很小。 TPS61046 的开关限流典型值为 900mA。 其具有 10ms 内置软启动时间,可将浪涌电流降至最低。 TPS61046 处于关断模式时,隔离开关会将输出与输入断开以最大限度降低泄漏电流。 TPS61064 还具有输出短路保护,输出过压保护和热关断。
TPS61046 采用 6 引脚 0.80mm x 1.20mm WCSP 封装。
The TPS61046 is a highly integrated boost converter designed for applications requiring high voltage and tiny solution size such as PMOLED panel power supply and sensor module. The TPS61046 integrates a 30-V power switch, input/output isolation switch, and power diode. It can output up to 28 V from input of a Li+ battery or two cell alkaline batteries in series.
One common issue with conventional boost regulators is the conduction path from input to output even when the power switch is turned off. It creates three problems, which are inrush current during start-up, output leakage current during shutdown and excessive over load current. In the TPS61046, the isolation switch is turned off under shutdown mode and over load conditions, thereby opening the current path. Thus the TPS61046 can truely disconnect the load from the input voltage and minimize the leakage current during shutdown mode.
The TPS61046 operates with a switching frequency at 1.0 MHz. This allows the use of small external components. The TPS61046 has an internal default 12-V output voltage setting by connecting the FB pin to the VIN pin. Thus it only needs three external components to get 12-V output voltage. Together with WCSP package, the TPS61046 gives a very small overall solution size. The TPS61046 has typical 900-mA switch current limit. It has 10-ms built-in soft start time to minimize the inrush current. The TPS61064 also implements output short circuit protection, output over-voltage protection and thermal shutdown.
该产品品牌下其它产品相关信息可咨询:https://www.iczoom.com/brand/509-c-1-20.html
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