C&H Technology PS21A7A - Manual (Page 8)

PS21A7A
Intellimod™ Module
Dual-In-Line Intelligent Power Module
75 Amperes/600 Volts
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
7 Rev. 08/09
Protection Function Timing Diagrams
Typical Interface Circuit
Wiring Method Around Shunt Resistor
c1
c5
c6
c3
c2
UVDt
c4
SET RESET RESET
HIGH LEVEL (NO FAULT OUTPUT)
UVDBr
CONTROL INPUT
PROTECTION
CIRCUIT STATE
CONTROL SUPPLY
VOLTAGE VDB
OUTPUT CURRENT IC
FAULT OUTPUT FO
Under-Voltage Protection (P-side, UVDB)
c1: Control supply voltage VDB rises – After VDB level reaches under voltage reset level (UVDBr),
the circuits starts to operate when next input is applied.
c2: Normal operation – IGBT turns on and carries current.
c3: VDB level dips to under voltage trip level (UVDBt).
c4: P-side IGBT turns off in spite of control input signal level, but there is no FO signal output.
c5: VDB level reaches UVDBr.
c6: Normal operation – IGBT on and carries current.
UP, VP, WP, UN, VN, WN
MCU
5V LINE
10kΩ
2.5kΩ (MIN)
FO
VNC (LOGIC)
DIP-IPM
NOTE: RC coupling at each input
(parts shown dotted) may change
depending on the PWM control
scheme used in the application and
the wiring impedance of the printed
circuit board. The DIPIPM input signal
section integrates a 2.5kΩ (min)
pull-down resistor. Therefore, when
using an external filtering resistor, care
must be taken to satisfy the turn-on
threshold voltage requirement.
VNC NW
NV
NU
DIPIPM
It is recommended to make the inductance under 10nH.
For shunt resistors, it is recommended to use as low
inductance type as possible.
Shunt
Resistors
Connect the wiring from VNC terminal at the point as
close to shunt resistors’ terminal as possible.
It is recommended to divide the wiring to current detecting
circuit at the point as close to shunt resistor’s terminal as
possible.
To Current
Detecting Circuit