Parker CM0504, Руководство пользователя

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CM0504 User Guide
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5.2.2.1. Short-to-Ground
Short-to-ground•faults•occur•when•a•low-side•output•pin•is•connected•to•ground.
5.2.2.2. Open load (low-side)
Open•load•faults•occur•when•a•low-side•output•pin•is•open•circuit•(not•connected•to•a•load).•
Note: Low-side•outputs•must•be•on•to•detect•an•open•load•fault.
5.2.2.3. Over-current (low-side)
Over-current•faults•occur•when•the•current•through•a•low-side•output•pin•exceeds•a•threshold•defined•in•
the•CM0504.•
5.3. High-Side/Low-Side Output Configuration
The•following•diagram•shows•the•possible•configuration•for•high-side/low-side•outputs:
Internal to product
Application
Load
High-Side Driver
Battery voltage
Application
Load
Low-Side Driver
Ground
Figure 5.1. High-side/Low-side output configuration
5.3.1. High-Side/Low-Side output connections
5.3.1.1. High-Side Output Connections
You•must•be•aware•of•the•following•when•connecting•high-side•outputs:
• • High-side•outputs•are•connected•to•the•VBATT•pins,•which•can•be•connected•to•a•+12•V•or•+24•V•
battery.•The•VBATT•powers•4x•25•A•outputs.•Maximum•load•on•the•VBATT•is•100•A.
• • High-side•outputs•can•provide•switched•battery•power•to•a•variety•of•load•types•in•a•vehicle.•
If•large•inductive•loads•are•used,•and•the•high-side•output•is•providing•a•continuous•PWM•signal,•then•
the•PWM•peak•current•must•not•be•greater•than•the•specified•continuous•current•for•the•output•(in•
continuous•mode,•the•average•current•flow•through•the•diode•at•50%•duty•cycle•is•approximately•equal•to•
½•the•peak•current).