C&H Technology POW-R-BRIK - Manual (Page 4)

Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272
POW-R-BRIK™
Phase Control Modules
345-800 Amperes/400-3000 Volts
P-3
Typical Thermistor Circuit
Thermistor temperatures can be
measured using the following
circuit arrangement in conjunction
with a 5 volt source. Resistance
values for R1 and R2 are specified
for two operating temperature
ranges.
POW-R-BRIK™ Thermistor
Characteristics
Element
Average
Thermistor Thermistor Temperature
Resistance Temp. Steady State Dynamic
Ohms °C °C (Min.) °C (Max.)
➀ ➁ ➂
12093 40 43 50
7337 50 53 60
4990 60 63 70
3324 70 73 80
2262 80 83 90
1569 90 93 100
1316 95 98 105
1109 100 103 110
938 105 108 115
797 110 113 120
680 115 118 125
582 120 123 130
500 125 128 135
431 130 133 140
➀ Curve matched ±2% over temperature range of +40°C
to +125°C. Resistance tolerance specified at +125°C,
±6%.
➁ Without self heating, 10mW maximum thermistor
dissipation.
➂ Use “Sensor at Tj” ohms from characteristics for
recommended steady state overload trip resistance.
1. Temperature range, 75°C
through 125°C
R1 = 3.5K ohms
R2 = 840 ohms
V0 = 2.5 volts at 100°C
2. Temperature range, 90°C
through 140°C
R1 = 2.2K ohms
R2 = 500 ohms
V0 = 2.45 volts at 115°C
The output signal (V0) is
approximately 30 mv/°C over the
temperature range indicated.
R 1
R 2 V O
5 VOLT SUPPLY
THERMISTOR GATES
POW-R-BRIK
CONTROL:
PROTECTION
CIRCUIT
TIME, t, (SECONDS)
TRANSIENT THERMAL IMPEDANCE
CHARACTERISTICS (JUNCTION-TO-CASE)
Z7A
10 -4
TRANSIENT THERMAL IMPEDANCE, Z
␪ (J-C)
(t), (
o
C/WATT)
10 -1
10 -2
10 -3
10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3
PER ELEMENT,
BOTH CONDUCTING
PER ELEMENT,
ONE CONDUCTING
PER MODULE,
BOTH CONDUCTING
TIME, t, (SECONDS)
TRANSIENT THERMAL IMPEDANCE
CHARACTERISTICS (JUNCTION-TO-CASE)
Z9A
10 -4
TRANSIENT THERMAL IMPEDANCE, Z
␪ (J-C)
(t), (
o
C/WATT)
10 -1
10 -2
10 -3
10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3
PER ELEMENT,
BOTH CONDUCTING
PER ELEMENT,
ONE CONDUCTING
PER MODULE,
BOTH CONDUCTING