STEVAL-IFP010V2 STMicroelectronics, STEVAL-IFP010V2 Datasheet - Page 13

• Manufacturer Part Number: STEVAL-IFP010V2
• Description: DEMO BOARD BASED ON VNI2140J
• Manufacturer: STMicroelectronics

Specifications of STEVAL-IFP010V2

• Main Purpose: Power Management, High Side Driver (Internal FET)
• Embedded: No
• Utilized Ic / Part: VNI2140J
• Primary Attributes: 2 Channel Internal Switch
• Secondary Attributes: Short-Circuit, Thermal & Undervoltage Protection
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8715

VNI2140J
7
Open load
In order to detect the open load fault a pull-up resistor must be connected between the V
line and the output pin.
In a normal condition a current flows through the network made up of a pull-up resistor and
a load. The voltage across the load is less than V
This is the result in the condition:
Equation 1
or
Equation 2
When a open load event occurs the voltage on the output pin rises to a value higher than
V
This result in the condition:
Equation 3
Figure 8.
OLMAX
(depending on the pull-up resistor). The diag pin will go down.
Open load detection
Doc ID 15187 Rev 7
⎛
⎝
V
------------------- - 1
V
CC
OLMIN
V
R
CC
----------------------------------- -
R
PU
LOAD
<
R
–
----------------------------------------- -
LOAD
V
I
OUT OFF1
CC
+
⎞ R
⎠
⋅
R
–
(
PU
LOAD
V
OLMIN
OLMAX
<
V
)MIN
OLMIN
<
R
; so the diag pin is kept high.
PU
Open load
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CC