Current sensing high side driver

 · In high-current-sensing applications such as this one, the I 2 R power losses in R SENSE can be significant. For this design, let’s start with a â ¦ sense resistor and current-sense. side switch. It features current sensing, over-current, over-temperature, ESD protection and drain to source active clamp. When the input voltage Vcc - Vin is higher than the specified threshold, the output power Mosfet is turned on. When the Vcc - Vin is lower than the specified Vil threshold, the output Mosfet is turned off. The Ifb pin is used for current sensing.  · General Description. The MIC high-side MOSFET driver is designed to operate at frequencies up to kHz (5 kHz PWM for 2% to % duty cycle) and is an ideal choice for high speed applications such as motor control, SMPS (switch mode power supplies), and applications using IGBTs.

by Henri Sino Download PDF. Accurate high-side current sensing is necessary in many applications, including motor control, solenoid control, and power management (for example, dc-to-dc converters and battery monitoring). In such applications, monitoring of current on the high side—instead of the return—permits improved diagnostic capabilities, such as determining shorts to ground and continuous monitoring of the recirculation-diode current—and maintains the integrity of the ground path. The MAX/MAX operate from a V to 28V input voltage range and feature a 5V/10mA on-board regulator. A high-side current-sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming. The MAX/MAX are well suited for applications requiring a wide input voltage range. side switch. It features current sensing, over-current, over-temperature, ESD protection and drain to source active clamp. When the input voltage Vcc - Vin is higher than the specified threshold, the output power Mosfet is turned on. When the Vcc - Vin is lower than the specified Vil threshold, the output Mosfet is turned off. The Ifb pin is used for current sensing.

drivers. Additionally, the outputs of the threshold detectors associated with VMON1-VMON8 High-side Current Sensor Using an Instrumentation Amplifier. The IRX reverse battery function works only if a discrete MOSFET is used to drive the input. If a bipolar transistor is used, a diode in parallel is required. The LT is a quad high-side gate driver allowing the use of low cost N-channel power MOSFETs comparator that is used to sense switch current. When a.