Microchip Technology MTCH650/2 可编程升压转换器

微芯科技MTCH652 是一款紧凑型升压转换器，具有多达 19 个电平转换器，为驱动高压(HV)输出提供了一款易于使用的解决方案。MTCH650 是一款线路驱动器器件，有 21 个电平移位器。该器件包含一个配置寄存器（CONFIG）和一个数据（DATA）寄存器。可采用 SPI 接口调节 CONFIG 寄存器，实现在应用时间内的电压变换。通过 CONFIG 寄存器设定输出电压、电流限值并进行软启动设置。DATA 寄存器将 HV 输出锁存设为 19/21 位输出屏蔽。输出使能（OE）实现高压输出锁存升压的高效循环，避免了通过串行接口设置高压输出锁存的延迟。当输出使能（OE）为'0'时，高压输出锁存设为'0'。当输出使能（OE）为'1'时，高压输出锁存被设为输出屏蔽。MTCH650/2 仅需一个 3 线串行接口、锁存使能（LE）和两个电容器。MTCH652 还需要一个额外的 PWM 和一个小型电感器。PWM 用于驱动升压转换器，并实现占空比和频率的灵活性。可选择的内部软启动功能限制了初始涌入电流，防止系统掉电。

The MTCH650 and MTCH652 both contain a Configuration register (CONFIG) and a data (DATA) register. The CONFIG register can be adjusted using the SPI interface, allowing for voltage changes during application time. The CONFIG register sets the output voltage, the current limit and the Soft Start settings. The DATA register configures the 19/21 bit output mask for the HV output latches. The Output Enable (OE) allows for efficient cycling of the boost voltage on the HV output latches without the delay of setting HV output latches via the serial interface. The HV output latches are set to "0" when Output Enable (OE) is "0". The HV output latches are set to the output mask when OE is "1".

While the MTCH650 and MTCH652 are very similar, the MTCH650 does not include a built-in boost circuit. The MTCH650 will require an external boost voltage device, such as the MCP16301.

The Microchip Technology MTCH650 and MTCH652 Projected Capacitive Drivers are available in SOIC28, SSOP28, and UQFN28 package options for design flexibility.

特性

MTCH652
- 19 high voltage I/O lines
- Built-in boost
- Internal switch
- 8V to 5.5V input operating range
- Low <200µA quiescent current
- Low 5µA shutdown current
- Up to 50 mA output current, at V_IN = 3.6V and V_OUT = 12V
- Boost driven by an external PWM allowing for greater boost flexibility
- Selectable 6V, 8V, 10V, 12V, 14V, 16V, and 18V output voltage range
- Selectable current limiting
- Selectable soft start
- High-speed SPI interface
  - 1MHz maximum
- Output Enable (OE) independent of SPI interface
- Built-in discharge circuit

MTCH65
- 21 high voltage I/O lines
- 8V to 5.5V input operating range
- Low <200µA quiescent current
- Low 5µA shutdown current
- Up to 100mA Output Current with 5mA per OUTxx Channel
- Output Enable (OE) independent of SPI interface
- 6V to 18V External V_PPIN Range
Package options
- SOIC28
- SSOP28
- UQFN28

应用

Human-machine interfaces with configurable button, keypad, or scrolling functions
Single finger gesture interfaces to swipe, scroll, or doubletap controls
Home automation control panels