Datasheet > PM9904BPD

PM9904BPD

更新时间： 2024-01-29 01:33:48

品牌	Logo	应用领域
SAMES		/
页数	文件大小	规格书
22页	4347K
描述
Evaluation Board for the SA9904B Energy Metering IC

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中文翻译

获取价格

数据手册

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PM9904BPD 数据手册

Evaluation Board for the SA9904B Energy

Metering IC

PM9904BPD

ssames

FEATURES

Designed to be used together with accompanying

softwareasfullyfunctionalthreephasetrivectormeter.

Betterthanclass1operation.

On board power supply.

Two on-board LED’s for active and reactive pulse output.

3 Phase 4 wire configuration.

On-boardLCDdisplay.

On-boardcurrent transformers.

IsolatedconnectiontoPCparallelport.

Easy accessible test pins.

Micro-controller plug-in support

DESCRIPTION

This application note describes the PM9904BPD evaluation

board and together with the SA9904B data sheet provides a

complete evaluation platform. The SA9904B is an accurate bi-

directional power / energy measurement IC with serial (SPI)

interface measuring active as well as reactive power / energy,

RMS voltage and frequency. More detailed information

specific to the of SA9904B can be found in its datasheet.

The SA9904B forms the energy/power metering front-end of

the module and connects to the SPI bus. Sharing the SPI bus

is the SA8807A LCD driver which is capable of driving 96

segments on a 4 back plane LCD.

The PM9904BPD evaluation board is configured and

calibrated via the parallel port of a PC. The data interface

between the evaluation board and the PC is fully isolated.

The PM9904BPD module is designed for a three-phase four-

wire applications, referenced to neutral. The mains voltages

easily connect to module by way of a Molex connector (SK1).

The 3 on-board current transformers measures the current in

each phase. A simple capacitive power supply supplies the

energy metering IC with power. The LM431 regulators are

used to generate a 5 V supply voltage for the on-board opto-

couplers. Provision has been made to connect an external 5V

powersupplytodrivetheisolatedopto-coupler.

The PM9904BPD module can easily be connected to a micro-

controller. The SAMES micro-controller board connects to the

evaluation module by means of JP1 thereby creating a

complete power meter without the PC interface. Physically the

micro-controller board plugs into the evaluation module with its

opto-coupler facing the mains connector (SK1). It shares the

SPI buswiththeSA8807AonboardLCDcontroller.

SK3

JP4

PCVSS

SK1

VDD

PCVDD

LCD

GND

Power

Supply

DISPLAY

GND

VSS

PCVSS

VDD

PCVDD

CT1

SA8807A

Resistor

Network

JP2

JP1

CT2

CT3

Resistor

Network

SA9904A

J12

F50

JP3

PCVSS

Resistor

Network

Test Pins

PCVSS

VSS

VDD

Test Pins

Figure 1: Block diagram

1/22

SPEC-0448 (REV. 6)

19-06-02

12 3 4 5 6 7...22

中文翻译

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