MCP19110_16 Datasheet, PDF (9/226 Pages) Microchip Technology – Digitally-Enhanced Power Analog Controller

MCP19110/11
1.0 DEVICE OVERVIEW
The MCP19110/11 is a highly integrated, mixed signal,
analog pulse-width modulation (PWM) current mode
controller with an integrated microcontroller core for
synchronous DC/DC step-down applications. Since the
MCP19110/11 uses traditional analog control circuitry
to regulate the output of the DC/DC converter, the
integration of the PIC^® microcontroller mid-range core
is used to provide complete customization of device
operating parameters, start-up and shut down profiles,
protection levels and fault handling procedures.
The MCP19110/11 is designed to efficiently operate
from a single 4.5V to 32V supply. It features integrated
synchronous drivers, bootstrap device, internal linear
regulator and 4 kW nonvolatile memory all in a
space-saving 24-pin 4 mm x 4mm QFN package
(MCP19110) or 28-pin 5 mm x 5 mm QFN package
(MCP19111).
After initial device configuration using Microchip’s
MPLAB^® X Integrated Development Environment (IDE)
software, the PMBus or I²C can be used by a host to
communicate with, or modify, the operation of the
MCP19110/11.
Two internal linear regulators generate two 5V rails.
One 5V rail is used to provide power for the internal
analog circuitry and is contained on-chip. The second
5V rail provides power to the PIC device and is present
on the V_DD pin. It is recommended that a 1 µF capacitor
be placed between V_DD and P_GND. The V_DD pin may
also be directly connected to the V_DR pin, or connected
through a low-pass RC filter. The V_DR pin provides
power to the internal synchronous driver.
FIGURE 1-1:
TYPICAL APPLICATION CIRCUIT
VIN
MPLAB® X ICD
Programmer
TRACK
PGOOD
CNTL
ADDR1
ADDR0
SYNC
SMBus Alert
SCL
SDA
ICDDAT
ICDCLK
MCLR
GPA6
GPB1
VIN
GPA0
HDRV
GPA2
BOOT
GPB2
PHASE
GPA3
LDRV
GPB7
GPB6 _MCP19111
GPA1
VDD
VDR
+ISEN
GPA4
GPA7
GPB0
-ISEN
+VSEN
-VSEN
GPB4
PGND
GPB5
GPA5
GND
+VOUT
-VOUT
 2013-2016 Microchip Technology Inc.
DS20002331D-page 9