Microchip MCP39F511 Manual de Usario

Microchip Niet gecategoriseerd MCP39F511

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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 mΩ shunt, two 499 kΩ and 1 kΩ 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: Niet gecategoriseerd
Modelo: MCP39F511

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