NovalithIC™ H-Bridge Demo Board
Version 2.2 (BTN89xxTA)
General Description
Demo Board Description 4 V1.0, 2011-09-23
1.2 Connector Pin Assignment
Figure 2 Header connector (top view)
1.3 Jumper Settings
1.4 Board ID
The NovalithIC H-Bridge Demo Board features a voltage divider formed by the resistors R10 and R11, which can
be used to distinguish between different types of demo boards. The input voltage for this divider (pin 24 on the 26
pin header connector) has to be supplied by the controller board or starter kit. The output of the divider (pin 17)
can be connected to an analog input of the microcontroller. Based on the measured voltage the controller can then
determine which type of board is connected.
When choosing the values of R10 and R11 it has to be considered that the voltage divider is drawing current from
the controller board supply. Therefore the sum of these resistors should be high in order to minimize this current.
By default the board is delivered with R10=open and R11=0Ω.
Pin Signal Description
1 IN1 Input of IC1
2 INH1 Inhibit of IC1
3 IN2 Input of IC2
4 INH2 Inhibit of IC2
17 R_ID Output of “board id” voltage divider
18 AGND Analog GND
20 GND GND
21 IS2 Current sense of IC2
22 VBAT VBAT going to control board / starter kit
23 IS1 Current sense of IC1
24 5V 5V coming from control board / starter kit
25 GND GND
26 GND GND
others NC Not connected
Jumper Description
JP1 Connects INH1 and INH2
Default: connected
JP2 Current sense output IC1 (IS1)
Pos.1: IS1 connected to IS2 (pin 1-2)
Pos.2: IS1 and IS2 routed separately (pin 3-4)
Default: Pos. 2
1 3 5 7 9 11 13 15 17 19 21 23 25
2 4 6 8 10 12 14 16 18 20 22 24 26