AP431AG Ver la hoja de datos (PDF) - Advanced Power Electronics Corp
Número de pieza
componentes Descripción
Fabricante
AP431AG Datasheet PDF : 10 Pages
| |||
Advanced Power
Electronics Corp.
AP431A
Note 3. Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference over
the full temperature range.
The average temperature coefficient of the reference input voltage αVREF is defined as:
α VREF
=
(
VDEV
VREF (25°C)
)
⋅10
T2 − T1
6
……………………..………………..
(
ppm
°C
)
Where:
T2 – T1 = full temperature change.
αVREF can be positive or negative depending on whether the slope is positive or negative.
Note 4. The dynamic output impedance, RZ, is defined as:
Z KA
=
∆ VKA
∆ IKA
When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output
impedance of the overall circuit, is defined as:
ZKA '
=
∆v
∆i
≈
Z KA
(1+
R1)
R2
Test Circuits
Input
IN
IN
VKA
IKA
VREF
IKA
VKA
R1
IREF
R2
VREF
VKA
IZ(OFF)
Fig1. Test Circuit for VKA= VREF
Note:VKA=VREF(1+R1/R2)+IREF× R1
Fig2. Test circuit for VKA＞VREF Fig3. Test Circuit for off-state Current
www.a-power.com.tw
4
Share Link: 