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Product details

Parameters

Number of channels (#) 4 Power switch MOSFET Peak output current (A) 0.004 Input VCC (Min) (V) 8 Input VCC (Max) (V) 24 Features SPI Interface, Sleep mode, OVP, Fault Diagnostics Operating temperature range (C) -40 to 125 Rise time (ns) 5000 Fall time (ns) 5000 Prop delay (ns) 5000 Input threshold CMOS Channel input logic Non-Inverting Input negative voltage (V) -0.3 Rating Catalog open-in-new Find other Low-side drivers

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TSSOP (DA) 32 89 mm² 11 x 8.1 open-in-new Find other Low-side drivers

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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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.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet 4-Channel Serial And Parallel High-Side Pre-Driver datasheet May 15, 1998
Application notes External Gate Resistor Selection Guide (Rev. A) Feb. 28, 2020
Application notes Understanding Peak IOH and IOL Currents (Rev. A) Feb. 28, 2020
Technical articles How to achieve higher system robustness in DC drives, part 3: minimum input pulse Sep. 19, 2018
Technical articles How to achieve higher system robustness in DC drives, part 2: interlock and deadtime May 30, 2018
Technical articles Boosting efficiency for your solar inverter designs May 24, 2018
Technical articles How to achieve higher system robustness in DC drives, part 1: negative voltage Apr. 17, 2018
More literature TPIC44H01 WinHelp Data Sheet: Production Data Dec. 16, 1998

Design & development

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Reference designs

REFERENCE DESIGNS Download
Automotive Body Control Module Driver Reference Design
TIDA-00296 TIDA-00296 is a reference design that highlights TI's high-side and low-side relay, motor, and load driver portfolios. The loads for this design (door locks, window lifts, seat heaters, HVAC, lamps, and LEDs) were chosen to show the range of loads that a BCM can drive and how TI's solutions fit into (...)
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