Thermistor Output; Emi Input Filter And Rectifier Circuit - Infineon iMOTION EVAL-M1-05-65D User Manual

EVAL-M1-05-65D User Manual
iMOTION™ Modular Application Design Kit
Schematics and Layout
6.2

Thermistor Output

This board provides Thermistor/NTC- output on pin 15 of the 20 pin connector J3. Temperatures can be
calculated by resistor measurement. Within the CIPOS™ Micro datasheet, thermistor details are listed as
summarized in Table 9. There is additional information in the datasheet of IRSM505-65D about how to use the
NTC.
Table 9 Internal NTC – Thermistor Characteristics (IRSM505-065 Only)
Symbol
R25
R125
B
Temperature Range
6.3

EMI input filter and rectifier circuit

Figure 12 depicts the schematic from the AC line input connector J1 to the rectified DC bus voltage. This
circuitry includes a passive EMI filter consisting of elements CX1, CX2, L1, CY1 and CY2, a 4 A/600 V rectifier block
BR1 and a NTC resistor RT1 for surge current protection. An electrolytic capacitor C1 and two ceramic
capacitors C10 and C11 are used for buffering the rectified DC bus voltage DCP. During testing it is advisable to
include an external fuse.
Figure 12 Schematic for EMI input filter and AC/DC section of the EVAL-M1-05-65D evaluation board
User Manual
Description Min
Resistance
-
Resistance
-
B-constant (25- -
50°C)
-40
Typ Max Units
47 - kΩ
1.41 - kΩ
4050 - K
120 °C
19
Conditions
T =25°C, ±5% tolerance
C
T =125°C
C
±2% tolerance
Revision 2.1
2018-07-09