TPS61093QDSKRQ1

TPS61093-Q1 是一款兼具高集成度和高可靠性的1.2MHz 固定频率升压转换器。该集成电路(IC) 集成有20V 电源开关、输入/输出隔离开关以及功率二极管。当输出电流超出过载限值时，IC 的隔离开关会断开，进而使输出与输入断开连接。这一断开功能可保护IC 和输入电源。在关断期间，隔离开关也会使输出与输入断开连接，以便最大限度降低泄漏电流。当IC 关断时，输出电容会通过内部二极管放电至低电压。其他保护特性包括逐周期1.1A 峰值过流保护(OCP)、输出过压保护(OVP)、热关断以及欠压闭锁(UVLO)。 IC 的最低输入电压为1.6V，可通过两个碱性电池、单个锂离子电池或者3.3V 和5V 稳压电源供电运行。输出电压最高可升压至17V。TPS61093-Q1 采用带散热焊盘的2.5mm×2.5mm SON 封装。

The TPS61093-Q1 is a highly integrated boost regulator for up to 17-V output. In addition to the on-chip 1-A PWM switch and power diode, this IC also integrates an output-side isolation switch as shown in the functional block diagram. One common issue with conventional boost regulators is the conduction path from input to output even when the PWM 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 TPS61093-Q1, the isolation switch turns off under shutdown-mode and over load conditions, thereby opening the current path. However, shorting the VO and OUT pins bypasses the isolation switch and enhances efficiency. Because the isolation switch is on the output side, the IC's VIN pin and power stage input power (up to 10V) can be separated. The TPS61093-Q1 adopts current-mode control with constant pulse-width-modulation (PWM) frequency. The switching frequency is fixed at 1.2-MHz typical. PWM operation turns on the PWM switch at the beginning of each switching cycle. The input voltage is applied across the inductor and the inductor current ramps up. In this mode, the output capacitor is discharged by the load current. When the inductor current hits the threshold set by the error amplifier output, the PWM switch is turned off, and the power diode is forward-biased. The inductor transfers its stored energy to replenish the output capacitor. This operation repeats in the next switching cycle. The error amplifier compares the FB-pin voltage with an internal reference, and its output determines the duty cycle of the PWM switching. This closed-loop system requires frequency compensation for stable operation. The device has a built-in compensation circuit that can accommodate a wide range of input and output voltages. To avoid the sub-harmonic oscillation intrinsic to current-mode control, the IC also integrates slope compensation, which adds an artificial slope to the current ramp.

• 具有符合AEC-Q100 的下列结果：器件温度1 级： -40°C 至125°C 结温工作温度范围
• 输入范围：1.6V 至6V
• 集成功率二极管和隔离场效应晶体管(FET)
• 具有1.1A 电流的20V 内部开关FET
• 1.2MHz 固定开关频率
• 15V 输出时的效率高达88%
• 过载和过压保护
• 可编程软启动
• 负载放电路径（IC 关断后）
• 2.5×2.5×0.8mm 小外形无引线(SON) 封装

• 有机发光二极管(OLED) 电源
• 3.3V 至12V、5V 至12V 升压转换器