Document
IXDD408PI / 408SI / 408YI / 408CI
8 Amp Low-Side Ultrafast MOSFET Driver
Features
• Built using the advantages and compatibility of CMOS and IXYS HDMOSTM processes. • Latch Up Protected • High Peak Output Current: 8A Peak • Operates from 4.5V to 25V • Ability to Disable Output under Faults • High Capacitive Load Drive Capability: 2500pF in <15ns • Matched Rise And Fall Times • Low Propagation Delay Time • Low Output Impedance • Low Supply Current
General Description
The IXDD408 is a high speed high current gate driver specifically designed to drive the largest MOSFETs and IGBTs to their minimum switching time and maximum practical frequency limits. The IXDD480 can source and sink 8A of peak current while producing voltage rise and fall times of less than 30ns. The input of the driver is compatible with TTL or CMOS and is fully immune to latch up over the entire operating range. Designed with small internal delays, cross conduction/current shootthrough is virtually eliminated in the IXDD408. Its features and wide safety margin in operating voltage and power make the IXDD408 unmatched in performance and value. The IXDD408 incorporates a unique ability to disable the output under fault conditions. When a logical low is forced into the Enable input, both final output stage MOSFETs (NMOS and PMOS) are turned off. As a result, the output of the IXDD408 enters a tristate mode and achieves a Soft Turn-Off of the MOSFET/IGBT when a short circuit is detected. This helps prevent damage that could occur to the MOSFET/IGBT if it were to be switched off abruptly due to a dv/dt over-voltage transient. The IXDD408 is available in the standard 8-pin P-DIP (PI), SOP-8 (SI), 5-pin TO-220 (CI) and in the TO-263 (YI) surface-mount package.
Applications
• • • • • • • • • • Driving MOSFETs and IGBTs Limiting di/dt under Short Circuit Motor Controls Line Drivers Pulse Generators Local Power ON/OFF Switch Switch Mode Power Supplies (SMPS) DC to DC Converters Pulse Transformer Driver Class D Switching Amplifiers
Figure 1 - Functional Diagram
Copyright © IXYS CORPORATION 2001 Patent Pending
First Release
IXDD408PI/408SI//408YI/408CI
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage All Other Pins Power Dissipation, TAMBIENT ≤25 oC 8 Pin PDIP (PI) 8 Pin SOIC (SI) TO220 (CI), TO263 (YI) Derating Factors (to Ambient) 8 Pin PDIP (PI) 8 Pin SOIC (SI) TO220 (CI), TO263 (YI) Storage Temperature Lead Temperature (10 sec)
Operating Ratings
Parameter
Maximum Junction Temperature Operating Temperature Range Thermal Impedance (Junction To Case) TO220 (CI), TO263 (YI) (θJC)
Value
25 V -0.3 V to VCC + 0.3 V 975mW 1055mW 17W 7.6mW/oC 8.2mW/oC 0.14W/oC -65 oC to 150 oC 300 oC
Value
150 oC -40 oC to 85 oC 0.95 oC/W
Electrical Characteristics
Unless otherwise noted, TA = 25 oC, 4.5V ≤ VCC ≤ 25V . All voltage measurements with respect to GND. IXDD408 configured as described in Test Conditions.
Symbol VIH VIL VIN IIN VOH VOL ROH ROL IPEAK IDC VEN VENH VENL tR tF tONDLY tOFFDLY tENOH tDOLD VCC ICC
Parameter High input voltage Low input voltage Input voltage range Input current High output voltage Low output voltage Output resistance @ Output high Output resistance @ Output Low Peak output current Continuous output current Enable voltage range High En Input Voltage Low En Input Voltage Rise time Fall time On-time propagation delay Off-time propagation delay Enable to output high delay time Disable to output low Disable delay time Power supply voltage Power supply current
Test Conditions
Min 3.5
Typ
Max 0.8
Units V V V µA V
-5 0V ≤ VIN ≤ VCC -10 VCC - 0.025
VCC + 0.3 10
0.025 IOUT = 10mA, VCC = 18V IOUT = 10mA, VCC = 18V VCC is 18V Limited by package power dissipation - .3 2/3 Vcc 1/3 Vcc CL=2500pF Vcc=18V CL=2500pF Vcc=18V CL=2500pF Vcc=18V CL=2500pF Vcc=18V Vcc=18V Vcc=18V 4.5 VIN = 3.5V VIN = 0V VIN = + VCC 18 1 0 12 13 37 32 14 15 38 34 18 19 42 38 52 30 25 3 10 10 0.8 0.8 8 2 Vcc + 0.3 1.5 1.5
V Ω Ω A A V V V ns ns ns ns ns ns V mA µA µA
Specifications Subject To Change Without Notice
2
IXDD408PI/408SI/408YI/408CI
Pin Configurations
IX D D 4 0 8 Y I IX D D 4 0 8 C I
1 VCC 2 IN 3 EN 4 GND
I X D D 4 0 8
VCC 8 OUT 7 OUT 6 GND 5
1 2 3 4 5
Vcc OUT GND IN EN
8 PIN DIP (PI) SO8 (SI)
TO220 (CI) TO263 (YI)
Pin Description
SYMBOL VCC IN EN OUT FUNCTION Supply Voltage Input Enable Output DESCRIPTION Positive power-supply voltage input. This pin provides power to the entire chip. The range for this voltage is from 4.5V to 25V. Input signal-TTL or CMOS compatible. The system enable pin. This pin, when driven low, disables the chip, forcing high impedance state to the output. Driver Output. For application purposes, this pin is connected, through a resistor, to Gate of a MOSFET/IGBT. The system ground pin. Internally connected to all circuitry, this pin provides ground reference for the entire chip. This pin should be connected to a low noise analog ground plane for optimum performance.
GND
Ground
Note 1: Operating the .