The A3932SEQ is a three-phase MOSFET con trol ler for use with bipolar brushless dc motors. Its high gate-current drive capability allows driving a wide range of n-channel power MOSFETs and can support motor supply voltages to 50 V. Bootstrapped high-side drive blocks provide the fl oat ing positive supplies for the gate drive and minimize the component count normally required. The high-side cir cuit ry also em ploys a unique FET monitoring circuit that ensures the gate voltages are at the proper levels before turn-on and during the ON cycle.
Internal fi xed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value. The peak loadcurrent limit is set by the user's selection of an input reference volt age and external sensing resistor. The fi xed off-time pulse duration is set by a user-selected external RC timing network. For added fl exibility, the continued ...
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Drives Wide Range of N-Channel MOSFETs Synchronous Rectifi cation Power MOSFET Protection Adjustable Dead Time for Cross-Conduction Pro tec tion 100% Duty Cycle Operation Selectable Fast or Slow Current-Decay Modes Internal PWM Peak Current Control High-Current Gate Drive Motor Lead Short-to-Ground Protection Internal 5-V Regulator Brake Input PWM Torque-Control Input Fault-Diagnostic Output Tachometer Output Thermal Shutdown Undervoltage Protection
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Supply Voltage, VBB .................................. 50 V
Peak Regulator Voltage, VREG ................... 15 V
Logic Input Voltage Range,
VIN ............................... -0.3 V to VLCAP + 0.3 V
Sense Voltage Range,
VSENSE ...................................... -5 V to +1.5 V
Output Voltage Range,
VSA, VSB, VSC .............................. -5 V to +50 V
VGHA, VGHB, VGHC .. ..............-5 V to VBB + 17 V
VCA, VCB, VCC ................................. VSX + 17 V
Operating Tem per a ture Range,
TA ......................................... -20°C to +85°C
Junction Temperature, TJ ................... +150°C
Storage Temperature Range,
TS ...................................... -55°C to +150°C
Post a Buying Lead
Required Field 
