Dual Channel, Low-Side PWM Controller.

[Dede]

İlginç bir çip.
Şematik devrede led driver olarak tasarlanmış. Ancak hemen aklıma gelen ise "başka bir şekilde değerlendirilebilir mi ?" sorgusu oldu.
Üstelik te kendi içinde barındırdığı PIC Tabanlı MCU vasıtasıyla Dijital olarak input/output kontrolü yapmak mümkün.

MCP19214/15 Datasheet


Features
• AEC Q100 Qualified and PPAP Capable
• Input Voltage Range: 4.5V-42V
• Two Independent High-Performance PWM Controllers
• Two Independent Control Loops per Channel allowing the User to Simultaneously Control the Output Voltage and Current
• Can Be Configured to Control Multiple Topologies including but Not Limited To:
- Boost
- Flyback
- Ćuk
- Single-Ended Primary-Inductor Converter (SEPIC)
• Peak Current Mode Control
• Master/Slave Operation of the PWM Controllers with Adjustable Phase Shift
• Differential Output Current Sense Capability
• Integrated Low-Side Current Sense Differential Amplifier (10X)
• Integrated Low-Side Gate Drivers:
- 0.5A Sink/Source Current Capability at 5V Supply Voltage
- 1A Sink/Source Current Capability at 10V Supply Voltage
• Special Events Generator (the state of regulating loops can be monitored without firmware overhead)
• Configurable Parameters:
- Reference Voltages for Regulating Loops (four internal DACs)
- Input Undervoltage Lockout (UVLO)
- Input Overvoltage Lockout (OVLO)
- Primary Current Leading Edge Blanking: 0 ns, 50 ns, 100 ns and 200 ns
- Fixed Switching Frequency Range: 31.25 kHz-2.0 MHz
- Slope Compensation
- Primary Current Sense Offset Adjustment
- Configurable GPIO Pin Options
• Low Quiescent Current: 10 mA Typical
• Low Sleep Current: 120 μA Typical
• Thermal Shutdown

Microcontroller Features
• Precision 8 MHz Internal Oscillator Block:
- Factory-Calibrated to ±1%, Typical
• Interrupt-Capable
- Firmware
- Interrupt-on-Change Pins
• Only 35 Instructions to Learn
• 8192 Words On-Chip Program Memory
• 336 bytes of Internal RAM
• High-Endurance Flash:
- 100,000 Write Flash Endurance
- Flash Retention: > 40 Years
• Watchdog Timer (WDT) with Independent
Oscillator for Reliable Operation
• Programmable Code Protection
• In-Circuit Serial Programming™ (ICSP™) via Two Pins
• Up to 12 I/O Pins and One Input-Only Pin
• Analog-to-Digital Converter (ADC):
- 10-Bit Resolution
- Internal 4096 mV Precision Reference Generator
- Up to 8 External Channels
• Timer0: 8-Bit Timer/Counter with 8-Bit Prescaler
• Enhanced Timer1:
- 16-bit Timer with Prescaler
- Two Selectable Clock Sources
• Timer2: 8-Bit Timer with Prescaler
- 8-Bit Period Register
• I2C Communication:
- 7-bit Address Masking
- Two Dedicated Address Registers
• Addressable Universal Synchronous
Asynchronous Receiver Transmitter (AUSART) (only MCP19215):
- 8 and 9-Bit Data Operations
- Address Detect
- Asynchronous and Synchronous Operating Modes