Microchip E-Scooter reference design

The MCP1754/MCP1754S is a 16 volt, high PSRR voltage regulator with short circuit current foldback. The MCP1754/MCP1754S regulator provides up to 150 mA of current. The input operating voltage range is specified from 3.6V to 16V continuous, 18V absolute maximum, making it ideal for automotive and commercial 12 VDC systems. The MCP1754/MCP1754S typically delivers 72 dB of ripple rejection at 1 kHz, performing well in AC sensitive applications like GFCI and AFCI circuit breaker designs. The Current Foldback feature is a true short circuit current foldback: the device current will gradually drop to 30 mA under short circuit conditions. When the short is removed, the device will recover and continue operating.

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Features

• High PSRR: 72 dB @1 kHz Typical
• Low 56.0 µA Typical Quiescent Current
• Wide Input Operating Voltage Range: 3.6V to 16.0V
• 150 mA Output Current for All Output Voltages
• Low Drop Out Voltage, 300 mV Typical at 150 mA
• 0.4% Typical Output Voltage Regulation
• Standard Output Voltage Options (1.8V, 2.5V, 3.0V, 3.3V, 5.0V), Additional Options Available on Request
• Output Voltage Tolerances of ±2.0% Over Entire Temperature Range
• Stable with Minimum 1.0 µF Output Capacitance
• Power Good Output
• Shutdown Input
• True Current Foldback Protection
• Short-Circuit Protection
• Overtemperature Protection
• ESD protection (>4kV HBM)

Microchip’s dsPIC33CK64MP10X family of digital signal controllers (DSCs) features a single 100 MIPS 16-bit dsPIC® DSC core with integrated DSP and enhanced on-chip peripherals. These DSCs enable the design of digital power, motor control, high-performance general-purpose and robust applications.

In the digital power segment, this family of devices is ideal for PFC applications, wireless power and high-density DC-DC applications. These DSCs are also well suited for switched mode power supplies such as AC/DC, DC/DC, UPS and PFC, providing high-precision digital control of buck, boost, fly-back, half-bridge, full-bridge, LLC and other power circuits to reach the highest possible energy efficiency.

In the motor control segment, this family is suited for lowest cost automotive, consumer and industrial applications. These DSCs are ideal for the control of BLDC, PMSM, ACIM, SR and stepper motors.

The rich feature set in this family of devices also make this family a very good fit for automotive sensors and industrial automation.

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Features

• High Performance Digital Signal Controller (DSC)
  • 100 MHz CPU instruction execution speed for tighter control loops
  • New instructions to accelerate DSP algorithm performance
  • Expanded context selected register sets for reduced interrupt latency
• Optimized Peripheral Feature Set
  • Perfectly optimized for single motor control applications, automotive and industrial sensor interfaces and consumer appliances
  • Analog integration includes a single high speed ADC, 3 op amps, and one analog comparator with DAC
• Improved Functional Safety Features and Support
  • Safety features include: ECC Flash, RAM BIST, Deadman Timer (DMT), Dual WDTs, BOR, Backup Fast RC Oscillator (BFRC), Fail Safe Clock Monitoring (FSCM), CRC, Virtual Pins for Redundancy, Flash OTP & Code Guard Security
  • Targets ASIL B(ISO 26262), SIL 2(IEC 61508), Class B Library(IEC 60730)
• Hardware Development Tools
  • dsPIC33CK64MC105 Motor Control Ext. Op Amp PIM (MA330051 1)
  • dsPIC33CK64MC105 Motor Control Int. Op Amp PIM (MA330051 2)
  • dsPIC33CK64MC105 General Purpose PIM (MA330052)
• Software Development Tools
  • MPLAB® X IDE, MPLAB® Xpress Cloud Based IDE
  • MPLAB® Code Configurator (MCC), XC16 C Compiler
  • motorBench® Development Suite

The MIC4103 and MIC4104 are high frequency, 100 V Half Bridge MOSFET drivers with faster turn-off characteristics than the MIC4100 and MIC4101 drivers. They feature fast 24 ns propagation delay times and 6ns driver fall times. The low-side and high-side gate drivers are independently controlled and matched to within 3 ns typical. The MIC4103 has CMOS input thresholds and the MIC4104 has TTL input thresholds. The MIC4103/4 include a high voltage internal diode that charges the high-side gate drive bootstrap capacitor. A robust, high-speed, and low power level shifter provides clean level transitions to the high side output. The robust operation of the MIC4103/4 helps ensure the outputs are not affected by supply glitches, HS ringing below ground, or HS slewing with high speed voltage transitions. Under-voltage protection is provided on both the low-side and high-side drivers. The MIC4103 and MIC4104 are available in an 8-lead SOIC package with a operating junction temperature range of -40°C to +125°C.

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Features

• Asymmetrical, low impedance outputs drive 1,000 pF load with 10 ns rise times and 6 ns fall times
• Bootstrap supply max voltage to 118 V DC
• Supply voltage up to 16 V
• Drives high- and low-side N-Channel MOSFETs with independent inputs
• CMOS input thresholds (MIC4103)
• TTL input thresholds (MIC4104)
• On-chip bootstrap diode
• Fast 24 ns propagation times
• Low power consumption
• Supply under-voltage protection
• Typical 2.5 Ω pull up and 1.25 Ω pull down output driver resistance
• -40°C to +125°C junction temperature range