返回至Microchip Technology

Microchip Technology MCP1631 High-speed PWM Controller

Microchip MCP1631 is offered as a high-speed microcontroller (MCU) based pulse width modulator (PWM) controller to help designers develop intelligent power systems. When combined with an easily-programmable MCU, the MCP1631 controls the power system duty cycle providing output voltage or current regulation. The MCU can adjust output voltage or current, switching frequency, and maximum duty cycle. The MCP1631 can charge multiple battery chemistries, including Li-Ion, NiHM, NiCd, and Lead Acid. Designers can use the MCP1631 with a small MCU to develop intelligent LED lighting designs and programmable SEPIC topology voltage and current sources. MCP1631’s integrated design also offers signal conditioning and protection features for battery chargers or constant-current source applications. These features include internal overtemperature protection and undervoltage lockout (UVLO).

Features

  • Programmable Switching Battery Charger Designs
  • High-Speed Analog PWM Controller (2MHz Operation)
  • Combine with Microcontroller for “Intelligent” Power System Development
  • Peak Current Mode Control (MCP1631)
  • Voltage Mode Control (MCP1631V)
  • High Voltage Options Operate to +16V Input
    • MCP1631HV Current Mode
    • MCP1631VHV Voltage Mode
  • Regulated Output Voltage Options
    • +5.0V or +3.3V
    • 250mA maximum current
  • External Oscillator Input sets Switching Frequency and Maximum Duty Cycle Limit
  • External Reference Input Sets Regulation Voltage or Current
  • Error Amplifier, Battery Current ISNS Amplifier, Battery Voltage VSNS Amplifier Integrated
  • Integrated Overvoltage Comparator
  • Integrated High Current Low Side MOSFET Driver (1A Peak)
  • Shutdown mode reduces IQ to 2.4μA (typical)
  • Internal Overtemperature Protection
  • Undervoltage Lockout (UVLO)
  • Package Options
    • 4mm x 4mm 20-Lead QFN (MCP1631/MCP1631V only)
    • 20-Lead TSSOP (All Devices)
    • 20-Lead SSOP (All Devices)

Applications

  • High Input Voltage Programmable Switching Battery Chargers
  • Supports Multiple Chemistries Li-Ion, NiMH, NiCd Intelligent and Pb-Acid
  • LED Lighting Applications
  • Constant Current SEPIC Power Train Design
  • USB Input Programmable Switching Battery Chargers
發佈日期: 2016-09-16 | 更新日期: 2022-03-11