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Application Note 1899
Author: Richard Garcia
HIP2103/HIP2104, 3-phase, Full, or Half Bridge Motor
Drive User’s Guide
Introduction
The HIP2103-4DEMO1Z is a general purpose motor drive with
a microprocessor controller. Three motor drive topologies are
supported: 3-phase for BLDC motors, and full and half bridge
for conventional brushed DC motors. Hall effect rotor position
sensors are used to control the switching sequence of the
BLDC topology (not required for the brushed DC motors).
The operating bridge voltage can vary between 13V and 50V
and the maximum motor current is 20A (with sufficient air
flow). This motor drive can be used as a design reference for
multiple applications including e-bikes, battery powered tools,
electric power steering, wheel chairs, or any other application
where a brushed or brushless DC motors are utilized. Because
this demonstration board is primarily intended to highlight the
application of the HIP2103 and HIP2104 3-phase MOSFET
drivers with no specific motor targeted, the control features
are limited to simple functions such as start/stop, reverse
rotation, and braking. Open loop speed control is
implemented. More advanced control features such as torque
control, speed regulation and regenerative braking are not
implemented because these methods require close
integration with the characteristics of the motor load
dynamics.
Important
Because Hall sensor switching logic sequences for BLDC
motors are not all the same, this demo board supports most, if
not all, variations of sequence logic. Please refer to the
sequence charts at the end of this application note to verify
that your desired sequence is implemented. If you require a
different sequence for your specific motor application or if you
need help identifying the correct switching sequence for your
specific motor, please contact Intersil prior to ordering this
demo board for possible support for a new switching
sequence.
Scope
This application note covers the design details of the
HIP2103-4DEMO1Z with a focus on the design
implementation of the HIP2103 and HIP2104 drivers including
recommended support circuits.
Also covered is the design method of the bipolar current
sensing feature. Presently, current sensing on this demo board
is used only for pulse-by-pulse current limiting but an analog
signal proportional to the motor current is available on board
as a design reference.
The microcontroller firmware is also provided as a reference
but the only support offered by Intersil will be for bug
corrections and for adding more switching sequences. Please
refer to Microchip for details on the use of the PIC18F2431.
Physical Layout
The HIP2103-4DEMO1Z board is 90mm by 82.5mm. The
tallest component is a 470µF capacitor. The total height is
32mm with standoffs. The Hall effect rotor position sensor
inputs are miniature terminal blocks. The phase terminal
blocks are high current outputs rated for 20A.
The controller section is a daughter card which contains push
buttons for reset, brake, reverse, and start/stop functions. Also
on the controller card are dip switches for configuration, LEDs
for status, and a programming port. As an option, a customer
designed controller daughter card can be substituted for the
Intersil supplied controller.
Specifications
Motor topologies
3-phase BLDC motor with Hall sensors
Full bridge for brushed DC motors
(bidirectional)
Half bridge for brushed DC motors
(unidirectional)
Operating voltage range 13 - 50VDC
Maximum continuous
bridge current
20A (with sufficient air flow)
Hall sensor bias voltage 3.3V, 15mA
PWM switching frequency ~20kHz
FIGURE 1. HIP2103-4DEMO1Z INPUTS AND OUTPUTS
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January 8, 2014
AN1899.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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