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FSBB20CH60BT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
10 www.fairchildsemi.com
FSBB20CH60B Rev. C
FSBB20CH60B Smart Power Module
Time Charts of SPMs Protective Function
a1 : Control supply voltage rises: After the voltage rises UV
CCR
, the circuits start to operate when next input is applied.
a2 : Normal operation: IGBT ON and carrying current.
a3 : Under voltage detection (UV
CCD
).
a4 : IGBT OFF in spite of control input condition.
a5 : Fault output operation starts.
a6 : Under voltage reset (UV
CCR
).
a7 : Normal operation: IGBT ON and carrying current.
Figure 8. Under-Voltage Protection (Low-side)
b1 : Control supply voltage rises: After the voltage reaches UV
BSR
, the circuits start to operate when next input is applied.
b2 : Normal operation: IGBT ON and carrying current.
b3 : Under voltage detection (UV
BSD
).
b4 : IGBT OFF in spite of control input condition, but there is no fault output signal.
b5 : Under voltage reset (UV
BSR
)
b6 : Normal operation: IGBT ON and carrying current
Figure 9. Under-Voltage Protection (High-side)
Input Signal
Output Current
Fault Output Signal
Control
Supply Voltage
RESET
UV
CCR
Protection
Circuit State
SET RESET
UV
CCD
a1
a3
a2
a4
a6
a5
a7
Input Signal
Output Current
Fault Output Signal
Control
Supply Voltage
RESET
UV
BSR
Protection
Circuit State
SET RESET
UV
BSD
b1
b3
b2
b4
b6
b5
High-level (no fault output)
11 www.fairchildsemi.com
FSBB20CH60B Rev. C
FSBB20CH60B Smart Power Module
(with the external shunt resistance and CR connection)
c1 : Normal operation: IGBT ON and carrying current.
c2 : Short circuit current detection (SC trigger).
c3 : Hard IGBT gate interrupt.
c4 : IGBT turns OFF.
c5 : Fault output timer operation starts: The pulse width of the fault output signal is set by the external capacitor C
FO
.
c6 : Input “L” : IGBT OFF state.
c7 : Input “H”: IGBT ON state, but during the active period of fault output the IGBT doesn’t turn ON.
c8 : IGBT OFF state
Figure 10. Short-Circuit Current Protection (Low-side Operation only)
Internal IGBT
Gate-Emitter Voltage
Lower arms
control input
Output Current
Sensing Voltage
of the shunt
resistance
Fault Output Signal
SC Reference Voltage
CR circuit time
constant delay
SC
Protection
circuit state
SET
RESET
c6
c7
c3
c2
c1
c8
c4
c5
12 www.fairchildsemi.com
FSBB20CH60B Rev. C
FSBB20CH60B Smart Power Module
Note:
1) RC coupling at each input might change depending on the PWM control scheme used in the application and the wiring impedance of the application’s printed circuit board. The
SPM input signal section integrates 5k
Ω (typ.) pull-down resistor. Therefore, when using an external filtering resistor, please pay attention to the signal voltage drop at input ter-
minal.
2) The logic input is compatible with standard CMOS or LSTTL outputs.
Figure 11. Recommended CPU I/O Interface Circuit
Note:
1) The ceramic capacitor placed between V
CC
-COM should be over 1uF and mounted as close to the pins of the SPM as possible.
Figure 12. Recommended Bootstrap Operation Circuit and Parameters
CPU
COM
5V-Line
,,
IN
(UL)
IN
(VL)
IN
(WL)
,,
IN
(UH)
IN
(VH)
IN
(WH)
V
FO
1nF
SPM
C
PF
= 1nF
R
PF
=4.7㏀
100Ω
100Ω
1nF 1nF
100Ω
15V-Line
22uF
0.1uF
1000uF 1uF
One-Leg Diagram of SPM
Inverter
Output
P
N
These Values depend on PWM Control Algorithm
Vcc
IN
COM
VB
HO
VS
Vcc
IN
COM
OUT
V
SL
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

FSBB20CH60BT

Mfr. #:
Buy FSBB20CH60BT
Manufacturer:
ON Semiconductor / Fairchild
Description:
Motor / Motion / Ignition Controllers & Drivers 600V -20A 3-phase
Lifecycle:
New from this manufacturer.
Delivery:
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