Microchip MCP39F511 Manual de Usario

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2015 Microchip Technology Inc. DS20005393B-page 1
MCP39F511
Features
Power Monitoring Accuracy Capable of 0.1%
Error Across 4000:1 Dynamic Range
Built-In Calculations on Fast 16-Bit Processing
Core
- Active, Reactive, Apparent Power
- True RMS Current, RMS Voltage
- Line Frequency, Power Factor
64-bit Wide Import and Export Active Energy
Accumulation Registers
64-bit Four Quadrant Reactive Energy
Accumulation Registers
Signed Active and Reactive Power Outputs
Dedicated Zero Crossing Detection (ZCD) Pin
Output with Less than 200 µs Latency
Dedicated PWM Output Pin with Programmable
Frequency and Duty Cycle
Automatic Event Pin Control through Fast Voltage
Surge Detection Less than 5 ms Delay
Two Wire Serial Protocol with Selectable Baud
Rate Up to 115.2 kbps using Universal
Asynchronous Receiver/Transmitter (UART)
Four Independent Registers for Minimum and
Maximum Output Quantity Tracking
Fast Calibration Routines and Simplified
Command Protocol
512 Bytes User-Accessible EEPROM through
Page Read/Write Commands
Low-Drift Internal Voltage Reference, 10 ppm/°C
Typical
28-lead 5x5 QFN Package
Extended Temperature Range -40°C to +125°C
Applications
Power Monitoring for Home Automation
Industrial Lighting Power Monitoring
Real-Time Measurement of Input Power for
AC/DC Supplies
Intelligent Power Distribution Units
Description
The MCP39F511 is a highly integrated, complete
single-phase power-monitoring IC designed for
real-time measurement of input power for
AC/DC power supplies, power distribution units,
consumer and industrial applications. It includes
dual-channel Delta-Sigma ADCs, a 16-bit calculation
engine, EEPROM and a flexible 2-wire interface. An
integrated low-drift voltage reference with 10 ppm/°C in
addition to 94.5 dB of SINAD performance on each
measurement channel allows for better than 0.1%
accurate designs across a 4000:1 dynamic range.
Package Types
1
25
2
3
4
5
8 9 10 11 12
21
20
19
18
17
28 27 26 24
EVENT1
NC
UART_RX
COMMONA
NC
NC
NC
AVDD
UART_TX
RESET
DVDD
DGND
MCLR
EP
29
6
7
OSCI
OSCO
13 14
COMMONB
PWM
16
15
23 22
REFIN+/OUT
ZCD
I1+
I1-
V1-
V1+
AN_IN
AGND
DGND
EVENT2
DR
MCP39F511
5x5 QFN*
*Includes Exposed Thermal Pad (EP);
see Table 3-1.
Power-Monitoring IC with Calculation and Energy Accumulation
MCP39F511
DS20005393B-page 2 2015 Microchip Technology Inc.
Functional Block Diagram
24-bit Delta-Sigma
Multi-level
+
-
SINC3
Digital Filter
Modulator ADC
PGA
I1+
I1-
24-bit Delta-Sigma
Multi-level
+
-
SINC3
Digital Filter
Modulator ADC
PGA
V1+
V1-
16-BIT
CORE
Calculation
Engine
(CE) Digital Outputs
UART
Serial
Interface
UART_TX
UART_RX
EVENT1
FLASH
10-bit SAR
ADC
OSCI
OSCO
Timing
Generation
Internal
Oscillator
Generation
AVDD AGND DVDD DGND
EVENT2
PWM
ZCD
AN_IN
2015 Microchip Technology Inc. DS20005393B-page 3
MCP39F511
MCP39F511 Typical Application – Single Phase, Two-Wire Application Schematic
DGND
OSCO
OSCI
DVDD RESET
AVDD
I1+
I1-
V1-
V1+
NC
NC
NC
REFIN/OUT+
AGND
COMMONA,B
NC
LOAD
+3.3V
N L
MCP1754
+3.3V
AGND
DGND
+
-
33 nF
33 nF
33 nF
1 k
1 k
1 k
499 k
1 k
4 MHz
22 pF 22 pF
33 nF
0.01 µF
0.47 µ F 470
470 µF
10
1 µF 0.1 µF 0.1 µF
0.1 µF
AN_IN
2 m
Leave Floating
N.C.
MCP9700A
(OPTIONAL)
+3.3V
to MCU UART
to MCU UART
UART_RX
UART_TX
DR
(OPTIONAL)
Connect on PCB
EVENT1
ZCD
EVENT2
PWM
MCP39F511
499 k
Note 1: The MCP39F511 demonstration board uses a switching power supply, however a low-cost
capacitive-based supply, as shown here, is sufficient for many applications.
2: The external sensing components shown here, a 2 m shunt, two 499 k and 1 k resistors for the
1000:1 voltage divider, are specifically chosen to match the default values for the calibration registers
defined in Section 6.0 “Register Descriptions”. By choosing low-tolerance components of these
values (e.g. 1% tolerance), measurement accuracy in the 2-3% range can be achieved with zero
calibration. See Section 9.0 “MCP39F511 Calibration” for more information.

Especificaciones del producto

Marca: Microchip
Categoría: No categorizado
Modelo: MCP39F511

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