Curtis Instruments 1351 - Half-Bridge Drivers; Table 4 Driver Outputs Electrical Specifications; Table 5 Half-Bridge Drivers Electrical Specifications

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2 — INSTALLATION SPECIFICATIONS AND WIRING

pg. 17

Return to TOC Curtis Model 1351 – December 2018

Table 4 Driver Outputs Electrical Specifications

Signal

Name

Output Type

Activity Level

Output Low

Voltage

PWM Frequency

Accuracy

Output Current*

Short-Circuit

Current

Measurement

Sense Limit

Input

Impedance

Driver 1 13

Low-Side Driver

Low = On

< 0.25 V at full

current and

100 % PWM

> 15kHz

± 0.5%

of full range

3 Amps

< 30 Amps

for < 100μS

10mA – 3.5 Amps

8 – 100% PWM

24kΩ

12-48V

models

47kΩ

36-96V

models

Driver 2 24

Driver 3 26

Driver 4 27

Driver 5 28

Driver 6 29

Driver 7 30

Driver 8 31

Driver 9 32

Driver 10 33

Half-Bridge Drivers

e Half-Bridge drivers are high frequency PWM drivers with current feedback. ey can be set to

operate as Low or High-Side drivers. In the Low-Side topology, connect the load to Coil Return/Safety

Output and the driver pin. In the High-Side topology, connect the load from B− to the driver pin.

Set the topology type using its Type parameter. e Half-Bridge (HB) Drivers also have the same

control modes as the PWM Drivers. Use them to drive high-side connected (Coil Return) or low-side

connected (B−) loads in constant current, constant voltage or PWM % modes. ese drivers are short

circuit protected to B+ or B−.

Table 5 Half-Bridge Drivers Electrical Specifications