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SKIC 6001
Absolute Maximum Ratings (Ta = 25 C)
Symbol VDD15V VDD5V ViH ViL fsw Top / Tstg Term 15 V supply voltage (reference for output signals) 5 V supply voltage (reference for input signals) input signal voltage (HIGH) max. input signal voltage (LOW) min. switching frequency operating/storage temp. Values 18 6 VDD5V + 0,3 GND - 0,3 50 -40...+ 85 Units V V V V kHz C
SEMIDRIVER IGBT Driver Circuit SKIC 6001
Preliminary Data
Electrical Characteristics (Ta = 25 C)1)
Symbol VDD15V VDD5V IS5V IS15V td 2) 3) tTDswitch tsupswitch Term 15 V supply voltage 5 V supply voltage supply current (VDD5V); typ 4) supply current (VDD15V); typ propagation time dead time interlock; typ. short pulse suppression TOP-BOT depending on input current for input resistor of 4.75k supply under voltage monitoring using VDD15V input threshold voltage (High) input threshold voltage (Low) internal pull down resistor (TOP; BOTTOM) internal pull up resistor (SELECT; TDT1; TDT2)
4)
Values 15 5% 5 5% 5-10 20-30 125 off, 1, 2, 3, 4 70
Units V V mA mA ns s ns
Package SOP 28 Features
IGBT-3-phase bridge driver circuit with protection functions * Interlock of TOP and BOTTOM switches in each halfbridge * Short pulse suppression * Supply undervoltage protection * Generation of the system clock * Integrated DC/DC-converter driver circuit * Error monitoring
VSU
13,0
V
input signal TOP, BOTTOM,SELECT, TDT1, TDT2 ViT+ ViTRdown Rup 3,7 1,5 66 2 66 2 V V k k
Typical Applications
* Driving of IGBTs - for 3-phase bridge configuration - due to isolation (magnetic transformer, optocoupler) can be used for voltages > 1200 V and high power applications
ERROR Input Signals VET+ VETREUp tswOSC tTd Ioutmax Voutmax Voutmin input threshold voltage (High) input threshold voltage (Low) internal pull down resistor oscillatory frequency DC/DC Converter time of interlock of DC/DC Converter > 3,7 < 1,5 22 500 250 5 4,8 0,22
3)
V V k kHz ns
1) 2)
Output Signal Error max. output current at VDD5V max. output voltage min. output voltage mA V V
Values for VDD15V;VDD5V;fsw=25kHz input "SELECT" = LOW = no interlock 3) with fsw = 8 MHz at OSC1, OSC2 4) stand by
by SEMIKRON
000913
1/4
SKIC 6001
TDT2 TDT1 CPOR OSC1 OSC2 VDD5V ERROR ERRINT RESET VDD15V TRP TRN GND GND
1 2 3
28 27 26
SELECT BI1 TI1 BI2 TI2 BI3 TI3 VDD5V BOT3 TOP3 BOT2 TOP2 BOT1 TOP1
4 5 6 7 8 9 10 11 12 13 14
25 24 23 22 21 20 19 18 17 16 15
Fig. 1 PIN Array SKIC 6001
SKIC6001
Pin-No.
Typ 1)
Name
Description
1 CON TDT2 determine interlock time for 1, 2, 3 and 4s, 2 CON TDT1 is only active if interlock mode is chosen with selector 3 CON CPOR Power On Reset, connect to 5V or C to GND for delay oscillator connection for external 8MHz quartz resonator 4 CON OSC1 5 CON OSC2 (10M in parallel for stability reasons is recommendable) 6 P VDD5V 5V power supply 7 OUT ERROR output of error memory 8 IN ERRINT input of error memory (Active Low) 9 OUT RESET RESET signal, "0" : 0V, "1":5V (Active Low) 10 P VDD15V 15V power supply 11 OUT TRP output of driver transistors for DC/DC Converter, signal frequency is 500kHz, interlock time is 250ns 12 OUT TRN 13 P GND Ground 14 P GND 15 OUT TOP1 driver output for TOP1 "0" : 0V, "1":5V 16 OUT BOT1 driver output for BOT1 "0" : 0V, "1":5V 17 OUT TOP2 driver output for TOP2 "0" : 0V, "1":5V 18 OUT BOT2 driver output for BOT2 "0" : 0V, "1":5V 19 OUT TOP3 driver output for TOP3 "0" : 0V, "1":5V 20 OUT BOT3 driver output for BOT3 "0" : 0V, "1":5V 21 P VDD5V 5V power supply 22 IN TI3 control input "0" : 0V, "1":5V 23 IN BI3 control input "0" : 0V, "1":5V 24 IN TI2 control input "0" : 0V, "1":5V 25 IN BI2 control input "0" : 0V, "1":5V 26 IN TI1 control input "0" : 0V, "1":5V 27 IN BI1 control input "0" : 0V, "1":5V 28 CON SELECT interlock optional "0" : 0V, "1":5V 1) CON...Configuration pin, P..Power Supply, IN...Input, OUT...Output
by SEMIKRON
000913
2/4
SKIC 6001
UCE,ERR , UB,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 (P), 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, driver and signal 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 by SEMIKRON 000913 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 9s (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:VCE) 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 of the microprocessor. The error storage can be reset by a 3/4
SKIC 6001
RESET pulse which is generated, if the inputs (TOP, BOTTOM) are LOW for 9 s.
Functional description
Interlock Fig. 3 demonstrates the right function of the interlock of TOP-and BOTTOM-IGBT.
125ns
125 ns
Fig. 4 Interlock function not active Shortpulse suppression A very short pulse can be suppressed by limiting the control input current. Thus with a 4.75k resistance shorter pulse than 70ns can be suppressed. This gives a higher noise immunity. Fig. 3 Interlock function At first BOTTOM is turned off immediately after the corresponding input signal (at 5s), while TOP is turned on with a delay of about 4s (setting of interlock 4s). After 10s both inputs become on". This is not a correct state (both IGBT on" means short circuit) and the reason is both outputs are switched off. A switch on of BOTTOM is possible not before TOP is off" (at 25s, interlock and delay time about 1s). Fig. 4 shows the behavior, if the interlock function isn't active (SELECT low"). Both outputs react immediately to the corresponding input (the difference is the signal delay time of about 125 ns). The interlock time may be chosen by connecting pin TDT1 and TDT2 to GND (0) or 5V (1). PIN TDT1 TDT2 SEL 4s 1 1 1 3s 1 0 1 2s 0 1 1 1s 0 0 1 Fig. 5 output driver signals of the dc/dc converter. OFF X X 0 The interlock time is 250ns, the frequency is 500kHz. DC-DC-Converter-Control signals
This technical information specifies devices but promises no characteristics. No warranty or guarantee expressed or implied is made regarding delivery, performance or suitability.
by SEMIKRON
000913
4/4

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