HM211 Hendon Semiconductors, HM211 Datasheet - Page 4

• Manufacturer Part Number: HM211
• Description: Power Management Modules & Development Tools OM5428 demoboard
• Manufacturer: Hendon Semiconductors
• Type: Motor / Motion Controllers & Driversr

Specifications of HM211

• Input Voltage: 230 V
• Maximum Operating Temperature: + 45 C
• Minimum Operating Temperature: 0 C
• Product: Power Management Modules
• Supply Current: 3 mA
• For Use With/related Products: OM5428
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Integrated Electronic Solutions, Hendon, South Australia
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The HM211 electronic control module provides a general
purpose core control module for triac control of a variety of
applications. It has provision for a large number of
component options to be used allowing a wide range of
possible user requirements to be covered through the
selection and placement of a few components which are
customised for each specific application.
Some applications of the HM211 are described in this
specification. These and other applications can be
addressed by adding the required components to the basic
HM211 uncommitted module. Less common functions (for
example use at another mains voltage) can also be easily
accommodated by choice of the components used.
The HM211 consists of the basic HM211 printed circuit
board already assembled with some of the surface mount
4.1
The HM211 contains a zero-crossing triac driver OM5428
(IC1) for electronically controlling a load, and in its most
common applications provides motor speed control or light
dimmer function by varying the phase of mains. The load
function may be either heating or cooling (e.g. a hot water
heating element, room heater, fan or motor for evaporative
cooling) and this load may be resistive or inductive in
nature, meaning the HM211 can satisfy a wide variety of
possible appliactions where temperature control or phase
control is desired. The necessary changes to suit each
load, and to set the switching temperatures or conditions
required, are made by selection and placement of
2007 Feb 08
OM5428 Demonstration Board
FUNCTIONAL OVERVIEW
Technical background
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and other key common parts, providing a basic module
which can be more easily customized to whichever circuit
a designer might wish to assemble, than by starting with
the unpopulated bare board.
The applications of the HM211 which have been
mentioned in this specification provide examples of
successful designs for typical applications, as well as
providing examples of the design process.
In a normal application the core HM211 unit (without the
customizing resistors) is made up into a finished product
by adding readily available axial lead resistors. This has
been chosen as the preferred custom assembly method,
rather than having a design based on surface mount
components which can be difficult for an inexperienced
person to use.
additional components (mainly axial leaded resistors) on
the generic HM211 control module.
The HM211 module is already assembled with an OM5428
IC, the timing & supply capacitors and a setting
potentiometer. Before a functioning module can be
completed several questions need to be answered,
resistor values calculated, then these components
together with the chosen triac are soldered in place to
complete the module.
For a detailed description of the functioning of the OM5428
integrated circuit refer to the Data Sheet “OM5428 General
purpose triggering circuit”.
Engineering Sample Information
HM211