MCP3905RD-PM1 Microchip Technology, MCP3905RD-PM1 Datasheet - Page 11

• Manufacturer Part Number: MCP3905RD-PM1
• Description: REFERENCE DESIGN FOR MCP3905
• Manufacturer: Microchip Technology

Specifications of MCP3905RD-PM1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: No
• Utilized Ic / Part: MCP3905/6
• Primary Attributes: 1-Phase, 220 VAC, In Case, With Mechanical Counter
• Secondary Attributes: On Board Transformerless AC/DC 5V Supply
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP3905A,MCP3906A
• Kit Application Type: Power Management
• Application Sub Type: Energy Meter
• Kit Contents: Design Guides
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.1
2.2
© 2009 Microchip Technology Inc.
INTRODUCTION
FEATURES
Chapter 2. Installation and Operation
The MCP3905A/06A Energy Meter Reference Design is a stand-alone, single-phase
residential meter design for active-energy meter designs. For advanced
microcontroller-based meter products, this design also serves as the design of the
Analog Front-End (AFE). This design includes a low-cost DC power supply circuit and
the necessary protection for IEC62053 EMC compliance.
FIGURE 2-1:
Microcontroller-Based Energy Meter Using MCP3905A AFE Design.
For more detailed information regarding design decisions and an approach to
IEC62053 compliance using the circuitry in this board, refer to AN994 “IEC Compliant
Active Energy Meter Design Using The MCP3905A/06A” (DS00994).
The MCP3905A/06A Energy Meter Reference Design PCB has the following features:
• Protection for IEC62053 Energy Meter EMC Immunity Tests
• On-Board DC power supply
• Resistor divider circuit for single-point meter calibration
• Connections for current-sensing shunt or other current sensing element
• Connection for voltage-sensing and power supply biasing
• Connections for mechanical counter and calibration output
• Low-noise PCB layout for small-signal conversion and IEC62053 accuracy
• Low-cost design
MCP3905A Stand-Alone Mechanical Counter
compliance for small shunt values
8
9
0
1
current-sensing
MCP3905A/06A
8
9
0
1
element
8
9
0
1
4
5
6
7
Energy Meter
8
9
0
1
2
3
4
5
2
3
4
5
MCP3905A Stand-Alone Energy Meter and
1000 imp/kWh
CLASS 1 METER
5(40)a
MCP3905A/06A ENERGY METER
REFERENCE DESIGN
MCP3905A/06A
REFERENCE DESIGN
Microcontroller-based LCD Energy Meter
MCP3905A/06A
POWER = 1432 KW
ENERGY = 43213 kWh
28/03/2004
15:23:23
current-sensing
element
CLASS 1 METER 5(40)a
PICmicro
Analog
Digital
MCU
®
DS51565B-page 7