參數(shù)資料
型號(hào): SKIC6001
廠商: SEMIKRON INTERNATIONAL
元件分類: 外設(shè)及接口
英文描述: SEMIDRIVER IGBT Driver Circuit
中文描述: 0.005 A HALF BRIDGE BASED PRPHL DRVR, PDSO28
封裝: SOP-28
文件頁數(shù): 3/4頁
文件大?。?/td> 329K
代理商: SKIC6001
SKIC 6001
by SEMIKRON
000913
3 / 4
U
CE,ERR
, U
B,ERR
Figure 2: System Configuration of a Propulsion Control with SKIC6001 without Motor
Overview
The integrated intelligent controller circuit (SKIC6001)
is presented for the control of IGBTs, especially in a
3-phase bridge, for high power applications and
frequencies up to 50kHz. Fig. 2 shows the functional
block diagram of the control IC for a propulsion
control. It consists of a digital control unit, mostly a
microprocessor (μP), the control IC (SKIC 6001), a
potential separation (ferrite signal transformer or
opto-couplers), the gate driver stages, an IGBT
halfbridge and a consumer (as e.g. a motor).
By means of the digital unit a pulse frequency
modulation of the IGBT driver signals is possible and,
therefore, a power control of the consumer can be
realized. The developed control circuit contains the
signal processing, power supply, the driving and
monitoring functions for IGBTs in a 3-phase bridge
application. A power supply of 5V and 15V is
necessary. The most important parts, functions and
connections are shown in Fig. 2:
the forward branch with selector, switch on delay,
short
pulse
suppression,
transformer to the secondary side (high voltage side)
the backward branch with error detection and
processing
the additional part with clock generator, power
supply control and dc/dc converter circuit
driver
and
signal
The control circuit has several inputs, some of them
with a Schmitt-trigger characteristic for increased
noise immunity. TOP1..3 and BOTTOM1..3 are the
main control inputs. A RESET is generated after all
inputs are LOW for 9
μ
s (active Low).
With the use of bidirectional opto-couplers the
information between primary and secondary side may
flow in both directions and high levels of dv/dt and
insulation are guaranteed (ferrite signal transformers
are also possible).
The high frequency dc/dc converter avoids the
requirement of an externally insulated power supply
to obtain the necessary voltage and power for the
IGBT gates. For this operation the dc/dc converter
circuit supplies a 15V signal with a frequency of
500kHz for three halfbridges.
An internal protection function of the SKIC 6001 is the
power supply control. The circuit will be blocked, if
the 15V-power supply drops under a value of
approximately 13,0V. Further error signals as e.g.
from the primary side (e.g. for short circuit:V
) can be
fed to the input of ERRINT. All detected error signals
are processed in the control IC. The forward driver
signal is blocked or the IGBTs are turned off and an
error signal appears at the output
microprocessor. The error storage can be reset by a
of
the
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