1 six channel sic mosfet driver gate driver for 1200v sic mosfet power module features ? 6 output channels ? isolated power supply ? direct mount low inductance design ? short circuit protection ? over temperature protection ? under voltage protection for use with cree module ? 45mm, 6 - pak module s . applications ? 6 - pak driver for 1.2kv, sic mosfet modules ? dc bus voltage up to 90 0v dc absolute maximum ratings symbol parameter value unit test conditions note v s power supply voltage 1 6 v vs ramp rate >50v/sec v ih input signal voltage high 5 v v il input signal voltage low 0 v i o.p k output peak current 9 a i o.avg.ma x ouput average current 2 a f max max. switching frequency 150 khz vg=+20/ - 5, rg = 1 0 ? v ds max. drain to source voltage 1200 v v isol input to output i solation v oltage 1200 v t op operating temperature - 2 5 to 70 o c t stg storage temperature - 40 to 85 o c characteristics symbol parameter value unit test conditions note s min typ max v s supply voltage 1 3.0 15.0 1 6.0 v v i input signal voltage on/off 5/0 v i so supply current (no load) supply current (switching ) 3 3 0 42 0 ma 70 c 83 0 1000 70 c , 150khz v it+ input threshold voltage high 3.5 v v it - input threshold voltage low 1.5 v t don turn on propogation delay 210 2 8 0 ns t doff turn off propogation delay 225 2 95 ns t err pulse width for resetting fault 800 ns w weight 300 g mtbf mean time between failure 1.5 10 6 h part number package marking CGD15FB45P pcba CGD15FB45P rev2 CGD15FB45P rev -
2 driver overview block diagram note: default gate resistor for r g is 10 ? for gate on and off. the user can control the gate turn on and off speed by changing rg to a lower value and gain better mosfet switching efficiency. the user can also control the gate turn - on and off speed independentl y by populating rg.off and d1. cs is made up of 3x 2.2nf, 1.2kv film capacitors. CGD15FB45P rev -
3 x1 C 26 pos signal connector (fci p/n# 71918 - 126lf) fault handling each of the six gate drive channels is protected by a desaturation circuit. in the event of a short circuit, the voltage across the mosfet (v ds ) rises until it hits a threshold which causes the desaturation circuit to drive all six gate drive channels to their off state. pin 17 of the 26 pin main signal connector toggles high when a desaturation event occurs. there will also be a red led (l1 - l6) illuminated for the gate drive channel (s) that activated the desaturation protection. once the fault is cleared , the circuit can be reset with the onboard reset button or remotely by pulling pin 13 of the 26 pin ribbon connector to common. there is an overtemperature protection circuit that turns off all the gates in the event an overtemperature is detected. the overtemperature circuit reads the value of the six pack modules onboard ntc. when the ntc reaches a value corresponding to 115c, the overtemperature circuit is activated and all si x gate drive channels are driven to their low state. pin 19 of the 26 pin ribbon con nector is toggled high when an overtemperature fault occurs . 1 pwm_upper_a (5v logic) 2 common 3 pwm_lower_a (5v logic) 4 5 pwm_upper_b (5v logic) 6 7 pwm_lower_b (5v logic) 8 9 pwm_upper_c (5v logic) 10 11 pwm_lower_c (5v logic) 12 13 /rst (normally hi) 14 15 rdy (normally hi) 16 17 desat fault (normally low) 18 19 over_temp_flt (normally low) 20 21 pwr in (vs) 22 23 24 25 26 led status indicators l1 red led, illuminated when phase a upper switch has a desat fault. l2 red led, illuminated when phase a lower switch has a desat fault. l3 red led, illuminated when phase b upper switch has a desat fault. l4 red led, illuminated when phase b lower switch has a desat fault. l5 red led, illuminated when phase c upper switch has a desat fault. l6 red led, illuminated when phase c lower switch has a desat fault. l7 green led, illuminated when power is present and all faults are clear. l8 red led, illuminated when there is an over temp fault. CGD15FB45P rev -
4 typical application CGD15FB45P rev -
5 mechanical instructions designed to directly mount to cree 45 mm style power modules , the 6 - ch gate driver also has several other mounting holes to secure the assembly. attach the gate driver board to the power module via the 4x module screw holes (see diagram below) using the rec o m m ended hardware in table 1. the n solder the 28x solder pins via the solder pin holes to electrically connect the driver board to the power module. the solder must not exceed 260 o c and the solder per pin must not exceed 10 seconds. the solder joints should be in accordance with ipc a 610 rev d (or later) C class 3 to ensure an optimal connection between the module and gate driver board. the module plus driver board assembly must be further supported by securing the assembly to standoffs via the 9x mounting holes shown in the figure below . table 1 hardware list ref description hardware locations torque module screw holes 2. 5mm clear a n ce holes for mounting screws to secure the module to the printed circuit board assembly. m2.5 x 4mm 4x 0.5 nm mounting holes 4.3 mm clear a n ce holes for screws to secure the circuit assembly to stand - offs for additional support. 6 - 32 x 5/6 zinc plated pan head screw /w internal tooth washer. 9x 0.9 nm access holes 10 mm clearance hole to provide access to the screw that secure the module to the heatsink. n/a 2x n/a solder pin holes 1 .6 mm plated holes for solder pins from power module. solder pins from power module 28x n/a power terminals 5mm holes to secure power cables. * 7x * power terminal holes are sized to accept a penn broaching nut (#p -kfs2 - 032). a 10 - 32, 6mm screw with a captured lock washer should be used with this broaching nut. CGD15FB45P rev -
6 6 mechanical drawing (units in inches) this product has not been designed or tested for use in, and is not intended for use in, applications implanted into the human body nor in applications in which failure of the product could lead to death, personal injury or property damage, including but not limited to equipment used in the operation of nuclear facilities, life-support machines, cardiac defbrillators or similar emergency medical equipment, aircraft navigation or communication or control systems, air traffc control systems, or weapons systems. copyright ? 2014 cree, inc. all rights reserved. the information in this document is subject to change without notice. cree and the cree logo are registered trademarks and z-rec and z-fet are trademarks of cree, inc. CGD15FB45P rev - cree, inc. 4600 silicon drive durham, nc 27703 usa tel: +1.919.313.5300 fax: +1.919.313.5451 www.cree.com/power
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