the msk4201 is a complete h-bridge mcm to be used for dc brushed motor control or class d switchmode amplifier. all of the drive/control circtuitry for the lowside and highside switches are internal to the mcm . the user provides a ttl compatible pwm signal for simultaneous amplitude and direction control in four quadrant mode. the internal drive circuitry will provide proper deadtime/shoot-through protection for each half-bridge. all n-channel fets mean the best efficiency for the size, both in terms of on-resistance and switching capability. for an idle/sleep mode, or for fault protection, a ttl compatible disable pin is provided so as to shut down all four transistors. the msk4201 is packaged in a space efficient isolated 8 pin to-3 that can be directly connected to a heatsink. m.s.kennedy corp. equivalent schematic typical applications pin-out information 5 6 7 8 gnd input motor a rsense 1 2 3 4 v+ motor b vcc disable 75 volt 5 amp mosfet h-bridge pwm motor driver/amplifier features: low cost complete h-bridge 28 volt, 5 amp capability, 75 volt maximum rating self-contained smart lowside/highside drive circuitry internal deadtime generation, shoot-through protection output disable/shutdown capability isolated case allows direct heatsinking four quadrant operation, torque control capability available fully screened and qualified to mil-prf-38534 replaces sa-51 available to dla smd 5962-97629 description: 4201 1 mil-prf-38534 and 38535 certified facility 8548-116 rev. f 3/14
max. 1.8 2.4 1.2 2.1 2.0 2.2 240 25 250 25 15 18 18 18 2.7 240 128 54 255 - - typ. 1.5 - - 1.0 - - - - - - 12 11 - - 1.5 160 85 36 170 100 p/f typ. 1.5 2.2 1.1 1.0 0.9 1.1 - - - - 12 11 11 11 1.5 160 85 36 170 100 p/f v v v v v v ns ua ua ua v ma ma ma v ns ns ns ns ns - output characteristics vds(on) voltage (each mosfet) instantaneous forward voltage, each mosfet (intrinsic diode) reverse recovery time (intrinsic diode) leakage current, each mosfet vcc supply characteristics vcc supply voltage range quiescent logic current input signals characteristics threshold voltage switching characteristics turn-on propagation delay (includes deadtime) turn-off propagation delay rise-time fall-time dead-time disable function i d =5a i s =5a v+=70v v+=70v v+=70v v cc =12v (non-switching) v cc =12v v+=28v, v cc =12v, i c =2a 75v 16v 5a 37a gnd-2v min. to v+ max. 2.3c/w high voltage supply logic supply continuous output current peak output current output voltage range thermal resistance @ 125c case (output switches) 1 2 3 1 2 3 - 1 2 3 - 1 2 3 1,2,3 - - - - - 7 absolute maximum ratings v+ v cc i out i pk v out jc -65c to +150c 300c -40c to +125c -55c to +125c +175c msk4201b msk4201 parameter test conditions electrical specifications units min. - - - - - - - - - - 10 - - - 0.8 - - - - - - max. 2.16 - - 2.2 - - 240 30 - - 15 21 - - 2.7 - - - - - - min. - - - - - - - - - - 10 - - - 0.8 - - - - - - 1 2 3 4 5 6 7 8 9 notes: storage temperature range lead temperature range (10 seconds) case operating temperature msk4201 msk4201b junction temperature t st t ld t c t j 1 1 group a subgroup 5 3 2 guaranteed by design but not tested. typical parameters are representative of actual device performance but are for reference only. industrial grade devices shall be tested to subgroup 1 unless otherwise specified. military grade devices ("b" suffix) shall be 100% tested to subgroups 1,2,3 and 7. subgroups 5 and 6 testing available upon request. subgroup 1,4 t a =t c = +25c 2 t a =t c = +125c 3 t a =t c = -55c continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle. when applying power to the device, apply the low voltage followed by the high voltage or alternatively, apply both at the same time. do not apply high voltage without low voltage present. internal solder reflow temperature is 180c, do not exceed. reference dla smd 5962-97629 for electrical specification for devices purchased as such. all ratings: tc= +25c unless otherwise specified 1 2 6 7 8548-116 rev. f 3/14 1 1 dis dis>3.6v 8
application notes msk4201 pin description in vcc - is the low voltage supply for powering internal logic and drivers for the lowside and highside mosfets. the supplies for the highside drivers are derived from this voltage. motor a - is the output pin for one half of the bridge. when the pwm input is high, this output will be pulled up to v+. v+ - is the higher voltage h-bridge supply. the mosfets obtain the drive current from this supply pin. the voltage on this pin is limited by the drive ic. the mosfets are rated at 100 volts. proper by-passing to gnd with suffi- cient capacitance to suppress any voltage transients, and to ensure removing any drooping during switching, should be done as close to the pins on the hybrid as possible. motor b - is the output pin for the other half of the bridge. when the pwm input is low, this output will be pulled up to v+. rsense - this is the common connection for the bot- tom of the bridge. this can have a sense resistor connec- tion to the v+ return ground for current limit sensing, or can be connected directly to ground. the maximum volt- age on this pin is 2 volts with respect to gnd. gnd - is the return connection for the input logic and vcc. pwm input - is a ttl compatible input pin for provid- ing the pwm signal to modulate the output switches. the duty cycle can be between 0% (dc low) and 100% (dc high). see typical system operation notes. disable input - is a ttl compatible input for provid- ing a shutdown signal to the mcm for disabling all four switches in the bridge regardless of the pwm input level. a digital 1 disables, a digital 0 enables. 3 8548-116 rev. f 3/14
this is a diagram of a typical application of the msk4201. the design vcc voltage is +12 volts and should have a good low esr bypass capacitor such as a tantalum. the pwm and disable signals are typically provided by some type of microprocessor control. the pwm signal will be a ttl signal with a pulse frequency required by the system, and pulse duty cycles according to the requi red direction/speed. a 0% duty cycle (continuous ttl low) will mean full voltage to the motor in one direction. a 100% duty cycle (continuous ttl high) will mean full voltage to the motor in the other direction. a 50% duty cycle will hold the motor at 0 rpm . current sensing is done in this case by a 0.1 ohm sense resistor to sense current from either leg of the bridge. it is imp ortant to make the high current traces as wide as possible to keep inductance down. the storage capacitor connected to the v+ and the hyb rid should be large enough to provide the high energy pulse without the voltage sagging too far. the storage capacitor should be a low esr ceramic capacitor or large polypropylene capacitor. mount capacitor as close to the mcm as possible. the connection between gnd and the v+ return should not be carrying any motor current. the sense resistor signal is common mode filtered as necessary to feed the limiting circuitry for the microprocessor. this application will allow full four quadrant torque control for a closed loop servo system. a snubber network is usually required, due to the inductance in the power loop. it is important to design the snubber netw ork to suppress any positive spikes above 75v and negative spikes below -2v with respect to pin 5 (gnd) of the mcm. typical system operation 4 8548-116 rev. f 3/14
mechanical specifications screening level part number msk4201 msk4201b industrial mil-prf-38534 class h ordering information 5 weight= 15.2 grams typical 8548-116 rev. f 3/14 all dimensions are specified in inches
the information contained herein is believed to be accurate at the time of printing. msk reserves the right to make changes to its products or specifications without notice, however, and assumes no liability for the use of its products. please visit our website for the most recent revision of this datasheet. m.s. kennedy corp. phone (315) 701-6751 fax (315) 701-6752 www.mskennedy.com 6 8548-116 rev. f 3/14 revision history
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