TPIC44H01DAG4 Ic Gate Drivers High Side 32TSSOP TPIC44L02 TPIC46L01 TPIC46L02
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Detailed Product Description
TPIC44H01DAG4 IC GATE DRIVERS HIGH SIDE 32TSSOP TPIC44L02 TPIC46L01 TPIC46L02 by Texas InstrumentsIntegrated Circuits IC Texas Instruments (Electronic Components )Description : The TPIC44H01 is a four channel high-side pre-FET driver which
provides serial or parallel input interface to control four
external NMOS power FETs. It is designed for use in low frequency
switching applications for resistive or inductive loads, including
solenoids and incandescent bulbs. Each channel has over-current, short-to-ground, and open-load
detection that is flagged through the FLT pin and distinguished
through the serial interface. Over-current thresholds are set
through the V(PK_x) and V(COMP1-4) pins. Short-to-ground and
open-load thresholds are set internally to approximately 2.5 V. The
AR_ENBL pin is used to define the operation of the device during a
fault condition, allowing the outputs to either latch off or to
enter a low duty cycle, auto-retry mode. An over-voltage lockout
circuit on V(PWR) protects the device and the external FETs. A low
current sleep state mode is provided to allow the TPIC44H01 to be
used in applications where V(PWR) is connected directly to the
battery. An internal charge pump allows the use of N-channel FETs
for high-side drive applications, while current-limit gate drive
provides slope control for reduced RFI. By having the unique ability to develop a dynamic over-current
threshold, the TPIC44H01 can be used to drive incandescent bulbs
with long inrush currents without falsely flagging a fault.
Likewise, the user can select an internally set over-current
threshold of ~1.25 V by pulling the respective V(COMP1-4) pin to
VCC. The 8-bit serial peripheral interface (SPI) allows the user to
command any of the four outputs on or off, to program one of eight
possible open-load, over-current, and short-load fault deglitch
timer settings, and to engage the sleep state. Data is clocked into
the SDI pin on the rising edge of SCLK and clocked out of the SDO
pin on the SCLK falling edge. The serial input bits are logic OR'ed
with the IN1-IN4 parallel inputs pins. The serial interface is also
used to read normal-load, open-load, over-current, and
short-to-ground conditions for each channel. Over-voltage lockout
can be detected when the FLT pin is low and no bits are set in the
SDO register. Multiple TPIC44H01 devices may be cascaded together
using the serial interface to further reduce I/O lines from the
host controller. Features : Serial or Parallel Control of Gate Outputs Sleep State for Low Quiescent Current Independent On-State Source Short-to-Ground (Shorted-Load)
Detection/Protection Independent On-State Over-Current Detection/Protection With Dynamic
Fault Threshold Independent Off-State Open-Load Detection Supply Over-Voltage Lockout Protection Asynchronous Open-Drain Fault Interrupt Terminal to Flag Fault
Conditions. Output Can be OR'ed With Multiple Devices Encoded Fault Status Reporting Through Serial Output Terminal
(2-Bits Per Channel) Programmable On-State Fault Deglitch Timers High Impedance CMOS Compatible Inputs With Hysteresis Fault Mode Selection: Outputs Latched Off or Switched at Low Duty
Cycle Device Can be Cascaded With Serial Interface.
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| Product Tags: TPIC44H01DAG4 Ic TPIC44L02 High Side Driver Ic TPIC46L01 High Side Driver Ic |
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