FSBB15CH60C Fairchild Semiconductor, FSBB15CH60C Datasheet - Page 35

• Manufacturer Part Number: FSBB15CH60C
• Description: IC POWER MOD SPM 600V SPM27CC
• Manufacturer: Fairchild Semiconductor
• Series: SPM™r
• Type: IGBTr

Specifications of FSBB15CH60C

• Configuration: 3 Phase
• Current: 15A
• Voltage: 600V
• Voltage - Isolation: 2500Vrms
• Package / Case: SPM27CC
• Transistor Polarity: N Channel
• Dc Collector Current: 15A
• Collector Emitter Voltage Vces: 2V
• Power Dissipation Pd: 55W
• Collector Emitter Voltage V(br)ceo: 600V
• Operating Temperature Range: -40°C To
• Operating Temperature (max): 150C
• Operating Temperature (min): -40C
• Pin Count: 27
• Mounting: Through Hole
• Case Length: 44mm
• Case Height: 5.5mm
• Screening Level: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

circuit. The 3-shunt circuit is popular since it permits detection of individual phase currents. The circuit is very
cost effective, simple and provides good current sensing performance.
circuit is not adequate for the precise over-current detection due to dispersion and temperature dependency
of V
2008-03-03
F
. Also, there are additional considerations when using this circuit as follows :
The 3-shunt resistor circuit is more complicated and has more considerations than the 1-shunt resistor
1.
2.
3.
Figure 7.5 shows typical circuit for short-circuit detection using diodes. It should be noted that this
R
shunt
The SC sensing signal delay time is increased. The R
added so the total delay time becomes:
The added diode blocks the IC leakage current (approximately 500nA) from Csc pin. If this
current is applied to the capacitor Csc, the Vcsc will be increased to a somewhat higher
value and causes SPM to stop gating even under normal conditions. In order to compensate
for this corruption of SC current sensing voltage, Rcsc must be placed in parallel with Csc.
The recommended value of Rcsc is approximately 47kΩ.
For the short circuit state, the diode drop voltage has to be considered to set the SC
protection reference level. The equation is as illustrated below.
Figure 7.5 Example of Short Circuit protection circuit with 3-shunt resistor
V
+
-
sensing block
SEN
Other phases
R
F1
C
F1
+
V
F
T
V
TOTAL
+
-
-
CSC
V4 Mini DIP SPM Application Note (2008-03-03)
R
V
F2
= t1 + t2 + t3 + t4
SEN
C
35
SC
= Vcsc + V
FAIRCHILD SEMICONDUCTOR - Smart Power Module
15V-Line
R
CSC
F
COM
V
C
CC
F1
SC
I
Leakage
Mini DIP SPM
x C
F1
= 500nA
time constant delay (t4) is