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MCP19124/5
Digitally-Enhanced Power Analog Synchronous Low-Side Dual-Loop PWM Controller
Features
• AEC-Q100 Automotive Qualified, See Section “Product Identification System”
• Input Voltage: 4.5V to 42V • Individual Analog Control Loops for Current or
Voltage Regulation • Can be configured with multiple topologies
including but not limited to: - Flyback - Ćuk - Boost - SEPIC (Single-Ended Primary-Inductor
Converter) • Capable of Quasi-Resonant or Fixed-Frequency
Operation • Low Quiescent Current: 5 mA Typical • Low Sleep Current: 50 µA Typical • Low-Side Gate Drivers:
- +5V gate drive with 0.5A sink/source current - +10V gate drive with 1A sink/source current • Peak Current Mode Control • Differential Remote Output Sense • Multiple Output Systems: - Master or Slave • AEC-Q100 Qualified • Configurable Parameters: - VREF, Precision IOUT/VOUT Set Point (DAC) - ADC Reference Switch (VDD or AVDD) - Input Undervoltage Lockout (UVLO) - Input Overvoltage Lockout (OVLO) - Detection and protection - Primary current leading edge blanking (0 ns,
50 ns, 100 ns and 200 ns) - Gate drive dead time (16 ns to 256 ns) - Fixed switching frequency range: 31.25 kHz
to 2.0 MHz - Slope compensation - Quasi-resonant configuration with built-in
comparator and programmable offset voltage adjustment - Primary current offset adjustment - GPIO pin options • Integrated Low-Side Differential Current Sense Amplifier • Better than ±5% Current Regulation • 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 • 4095 Words On-Chip Program Memory • 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 • Eight I/O Pins and One Input-Only Pin: - Two open-drain pins • Analog-to-Digital Converter (ADC): - 10-bit resolution - Five 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
2016-2023 Microchip Technology Inc. and its subsidiaries
DS20005619C-page 1
MCP19124/5
Pin Diagram – 24-Pin QFN (MCP19124)
GPB1/AN4/VREF2 ICOMP VCOMP VS VIN VDD
24
23
22
21
20
19
GPA0/AN0/TEST_OUT 1
18 VDR
GPA1/AN1/CLKPIN 2
17 PDRV
GPA2/AN2/T0CKI/INT 3 GPA3/AN3 4
MCP19124
16 SDRV 15 PGND
GPA7/SCL/ICSPCLK 5
GPA6/CCD/ICSPDAT 6 7
EXP-25 *
8
9
14 AGND
13 IP
10
11
12
GPA5/MCLR/TEST_EN GPB0/SDA DESAT_N DESAT_P ISP ISN
* Includes Exposed Thermal Pad, see Table 1.
DS20005619C-page 2
2016-2023 Microchip Technology Inc and its subsidiaries.
MCP19124/5
TABLE 1: 24-PIN QFN (MCP19124) SUMMARY
I/O 24-Pin QF.
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