PVSG User Guide
7
3.1.1.
Power control digital input connections
When•connecting•power•control•(wake•up)•inputs,•note•that
•
•
The•power•control•digital•input•is•usually•connected•to•the•vehicle•ignition,•but•it•can•be•connected•
to•any•power•source•in•a•system.
•
•
To•protect•the•harness•that•connects•the•PVSG•to•the•ignition,•place•a•fuse•of•200•mA•or•higher•in•the•
circuit•that•feeds•the•PVSG.
•
•
When•battery•power•(VBATT)•is•connected,•and•the•power•control•digital•input•is•inactive,•the•PVSG•
will•go•into•sleep•mode.
The•following•diagram•shows•a•typical•power•control•digital•input•connection:
•
Internal to product
Power Control Input
Power
Control
Pull-Down
Resistor
Battery
Application Switch
Figure 3.1. Power control digital input installation connections
3.1.2.
Active-high digital input connections
A•digital•input•is•typically•connected•to•a•switch•that•is•either•open•or•closed.
•
•
When•an•active-high•switch•is•open,•the•pull-down•resistor•ensures•that•no•voltage•exists•on•the•
input•signal,•which•will•be•interpreted•by•the•PVSG•as•inactive.
•
•
When•the•switch•is•closed,•the•input•is•connected•to•battery•voltage,•which•will•be•interpreted•by•the•
PVSG•as•active.
For•an•input•that•is•active-high
•
•
It•must•be•connected•to•battery•power•so•that•there•is•a•battery•connection•when•the•state•of•the•
input•changes.
•
•
The•power•provided•to•the•digital•switch•connected•to•the•input•must•be•provided•through•a•fuse•in•
the•wire•harness.
Summary of Contents for PVSG
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