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Thank you for your purchase of the Robot Power Simple-H. This manual explains the
Features and functions of the Simple-H along with some tips for successful application. Before
using your Simple-H you must read and agree to the disclaimer printed at the end of this
document.
The Robot Power Simple-H is a low-cost easy to connect general-purpose power amplifier
that can be configured as a single H-bridge circuit or as two independent half-bridge circuits.
While designed for permanent magnet brushed DC motors; the Simple-H is suitable for a wide
range of DC loads as long as they are within the current and voltage envelope of the device.
1. Specifications
Voltage Range
Current (H-
1
bridge)
Current (each half-
bridge)*
Current (ganged
half-bridge)*
PWM frequency
Current Sense
Output
Input voltage
levels
PA,PB,EA,EB
Size
Weight
Mounting
Fan
Simple-H User Manual
Without Fan
5V – 24V (28V absolute max)
20A cont. at 100% duty cycle
17A cont. at 70%
45A 5 second peak
Same as above
40A cont. at 100%
35A cont. at 70%
70A 5 second peak
DC – 20kHz
Vc = I * 0.075
Vc = .0.75 at 10A
Vc = 2.99V at 40A
2.5V – 5.5V = logic high
<1.7V = logic low
2.5" x 2.25" x 0.5"
37g
4x - 4-40 or M2.5 bolts
None
With Fan
Same
25A cont. at 100%
20A at 70%
45A 5 second peak
Same as above
48A cont. at 100%
38A cont. at 70%
70A 5 second peak
DC-20kHz
Same
Same
2.5" x 2.25" x 0.75"
61g
Same
50mm x 10mm – 12V
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Table of Contents
Summary of Contents for Robot Power Simple-H
- Page 1 Thank you for your purchase of the Robot Power Simple-H. This manual explains the features and functions of the Simple-H along with some tips for successful application. Before using your Simple-H you must read and agree to the disclaimer printed at the end of this document.
- Page 2 2. Input Output connections and Jumper Settings J1 Jumper Connections The Simple-H ships with two jumpers used to select the enable and current sense options of the unit. By default these are installed on EA and CA for combined enable and current sense operation (see below).
- Page 3 Thus the Simple-H supports both variable speed and direction of a single load. Since the Simple-H supports 100% ON and OFF periods for the inputs, you may use mechanical or electrical switches or binary signals to activate the power chips.
- Page 4 Note, however that the Simple-H is not optically isolated from the command inputs so in the unlikely event of a total power chip failure it is possible that the full battery voltage could be applied to the command input pins.
- Page 5 Often their voltage will increase until the extra power is dissipated. If the Simple-H is operated at 24V with a power supply of this type it is possible to exceed the 28V maximum rating of the device and destroy the power chips.
- Page 6 5. If the Simple-H is coated with conformal PCB coating products please ensure the heatsinks are masked and left free of coating. 6. Monitor the terminal connectors especially if fork type terminals are used. It is possible for them to twist and come in contact with the filter capacitor. If the filter cap is too close to the B+ and B- terminals it may be gently pushed back toward the heatsinks.
- Page 7 7. Dimensions and Mounting 8. Schematic The Simple-H schematic may be downloaded from the Robot Power Web site. www.robotpower.com/downloads/ 9. Further questions For questions not answered by this document or for application advice please feel free to contact us. We’ll be happy to answer your questions and hopefully together we can make...
- Page 8 Roy, WA 98580 USA 253-843-2504 support@robotpower.com Thanks again for purchasing the Simple-H and best of luck with your projects. The Robot Power Team Disclaimer: The Simple-H is intended for educational and experimental uses. It should not be used in applications where human life or health or significant property value depend on its proper operation.
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