Industrial

The A3946 is designed specifically for applications that require high power unidirectional dc motors, three-phase brushless dc motors, or other inductive loads. The A3946 provides two high-current gate drive outputs that are capable of driving a wide range of power N-channel MOSFETs.

The A3940KLP / A3940KLW Full-Bridge Power MOSFET Controller is specifically designed for automotive applications that require high-power motors. Each provides four high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration. Bootstrap capacitors are utilized to provide the above-battery supply voltage required for n-channel FETs. An internal charge pump for the high side allows for dc (100% duty cycle) operation of the bridge. Protection features include supply under/overvoltage, thermal shutdown, and motor lead short-to-battery and short-to-ground fault notification, and a programmable dead-time adjustment for cross-conduction prevention. The overvoltage trip point is user adjustable. The A3940 is supplied in a choice of two power packages, a 28-pin TSSOP with an exposed thermal pad (package type LP), and a 28-pin wide-body SOIC (package type LW). Both package types are available in lead (Pb) free versions, with 100% matte-tin leadframe plating (suffix –T).

The A3940KLP and A3940KLW are designed specifically for automotive applications that require high-power motors. Each provides four high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration. Bootstrap capacitors are utilized to provide the above-battery supply voltage required for n-channel FETs. An internal charge pump for the high side allows for dc (100% duty cycle) operation of the bridge. Protection features include supply under/overvoltage, thermal shutdown, and motor lead short-to-battery and short-to-ground fault notification, and a programmable dead-time adjustment for cross- conduction prevention. The overvoltage trip point is user adjustable. The A3940 is supplied in a choice of two power packages, a 28- lead TSSOP with an exposed thermal pad (suffix LP), and a 28-lead wide-body SOIC (suffix LW).

A3938 Three-Phase Power MOSFET Controller

Designed for pulse-width modulated (PWM) current control of three-phase brushless dc motors, the A3936SED is capable of peak output currents to ± 3 A and operating voltages to 50 V. Internal fixed off-time PWM current-control timing circuitry can be configured to operate in slow-, fast- and mixed- decay modes. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes thermal shutdown with hysteresis, and crossover current protection. Special power up sequencing is not required. The A3936 is supplied in a 44-pin plastic PLCC with a copper batwing tabs (suffix ‘ED’). The power tabs are at ground potential and need no electrical isolation. This device is also available in a lead-free version (100% matte tin leadframe).

The A3935 is designed specifically for automotive applications that require high-power motors. It provides six high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs. The A3935 integrates a pulse-frequency modulated boost converter to create a constant supply voltage for driving the external MOSFETs. Bootstrap capacitors are utilized to provide the above battery supply voltage required for n-channel FETs. Direct control of each gate output is possible via six TTL-compatible inputs. A differential amplifier is integrated to allow accurate measurement of the current in the three-phase bridge. Diagnostic outputs can be continuously monitored to protect the driver from short-to-battery, short-to-supply, bridge-open, and battery under/overvoltage conditions. Additional protection features include dead-time, VDD undervoltage, and thermal shutdown. The A3935 is supplied in a choice of three packages, a 44-lead PLCC with copper batwing tabs (suffix ED), a 48-lead low profile QFP with exposed thermal pad (suffix JP), and a 36-lead 0.8 mm pitch SOIC (suffix LQ).

A3932SEQ is a three-phase brushless DC motor controller, which supports 12-50V voltage, and has internal fixed off time PWM current control circuit, maximum current limit is set by input reference voltage and external sensing resistor. It also has optional synchronous rectification, 120-degree spacing Hall sensor commutation logic, MOSFET gate-source voltage monitor, bootstrap capacitor charging current monitor, undervoltage lockout, overcurrent protection and etc.

The FAN7380 is a monolithic half-bridge gate drive IC for MOSFETs and IGBTs, which operate up to +600V. Fairchild's high-voltage process and common-mode noise canceling technique give stable operation of high-side driver under high-dv/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to VS=-9.8V (typical) for VBS=15V. The input logic level is compatible with standard TTL-series logic gates. The internal shoot-through protection circuit provides 100ns dead-time to prevent output switching devices from both conduction during transition periods. UVLO circuits for both channels prevent malfunction when VCC and VBS are lower than the specified threshold voltage.

The FAN7382 is a monolithic high and low side gate-drive IC, which can drive MOSFETs and IGBTs that operate up to +600V. It can be applied to PDP scan driver, fluorescent lamp ballast, SMPS, motor driver, etc.

The FAN7383 is a high voltage half-bridge gate-drive IC with shutdown and programmable dead-time control functions for driving MOSFETs and IGBTs that operate up to +600V.

The FAN73832 is a half-bridge, gate-drive IC with shut-down and programmable dead-time control functions for driving MOSFETs and IGBTs, operating up to +600V. Fairchild’s high-voltage process and common-mode noise canceling technique provide stable operation of high-side driver under high dv/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to VS=-9.8V (typical) for VBS=15V. The UVLO circuits for both channels prevent malfunction when VDD and VBS are lower than the specified thresh- old voltage. Output drivers typically source/sink 350mA/650mA, respectively, which is suitable for all kinds of half- and full-bridge inverters.

The FAN73833 is a half-bridge gate-drive IC for driving MOSFETs and IGBTs, operating up to +600V. It features a floating channel for Bootstrap operation, with sourcing/sinking current driving capability of 350mA/650mA for each channel. It has an extended allowable negative VS swing to -9.8V for signal propagation at VDD=VBS=15V. It is compatible with 3.3V and 5V input logic. The outputs are in phase with input signals. It has built-in UVLO functions and a shoot-through prevention circuit. It also includes a built-in common-mode dv/dt noise canceling circuit and internal dead-time of 400ns. It is suitable for applications such as SMPS, motor drive inverters, fluorescent lamp ballasts, and HID ballasts.

The FAN7384 is a monolithic half-bridge gate-drive IC designed for high voltage, high speed driving MOSFETs and IGBTs operating up to +600V. Fairchild’s high-voltage process and common-mode noise canceling technique provide stable operation of high-side drivers under high-dv/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to VS = -9.8V (typical) for VBS =15V. The UVLO circuits prevent malfunction when VDD and VBS are lower than the specified threshold voltage. Output drivers typically source/sink 250mA/500mA, respectively.