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TPIC44L02DB датащи(PDF) 1 Page - Texas Instruments |
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TPIC44L02DB датащи(HTML) 1 Page - Texas Instruments |
1 / 20 page TPIC44L01, TPIC44L02, TPIC44L03 4-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER SLIS062A – NOVEMBER 1996 – REVISED SEPTEMBER 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 4-Channel Serial-in Parallel-in Low-Side Pre-FET Driver D Devices Are Cascadable D Internal 55-V Inductive Load Clamp and VGS Protection Clamp for External Power FETs D Independent Shorted-Load/Short-to- Battery Fault Detection on All Drain Terminals D Independent OFF-State Open-Load Fault Sense D Over-Battery-Voltage Lockout Protection and Fault Reporting D Under-Battery Voltage Lockout Protection for the TPIC44L01 and TPIC44L02 D Asynchronous Open-Drain Fault Flag D Device Output Can be Wire ORed with Multiple Devices D Fault Status Returned Through Serial Output Terminal D Internal Global Power-On Reset of Device and External RESET Terminal D High-Impedance CMOS-Compatible Inputs With Hysteresis D TPIC44L01 and TPIC44L03 Disables the Gate Output When a Shorted-Load Fault Occurs D TPIC44L02 Transitions the Gate Output to a Low-Duty-Cycle PWM Mode When a Shorted-Load Fault Occurs description The TPIC44L01, TPIC44L02, and TPIC44L03 are low-side predrivers that provide serial and parallel input interfaces to control four external FET power switches such as offered in the TI ™ TPIC family of power arrays. These devices are designed primarily for low-frequency switching, inductive load applications such as solenoids and relays. Fault status for each channel is available in a serial-data format. Each driver channel has independent off-state open-load detection and on-state shorted-load/short-to-battery detection. Battery overvoltage and undervoltage detection and shutdown is provided on the TPIC44L01/L02. On the TPIC44L03 driver, only over-battery-volt- age shutdown is provided Each channel also provides inductive-voltage-transient protection for the external FET. These devices provide control of output channels through a serial input interface or a parallel input interface. A command to enable the output from either interface enables the respective channels gate output to the external FET. The serial interface is recommended when the number of signals between the control device and the predriver must be minimized and the speed of operation is not critical. In applications where the predriver must respond very quickly or asynchronously, the parallel input interface is recommended. For serial operation, the control device must transition CS from high to low to activate the serial input interface. When this occurs, SDO is enabled, fault data is latched into the serial interface, and the fault flag is refreshed. Data is clocked into the serial registers on low-to-high transitions of SCLK through SDI. Each string of data must consist of at least four-bits of data. In applications where multiple devices are cascaded together, the string of data must consist of4 bits for each device. A high data bit turns the respective output channel on and a low data Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. TI is a trademark of Texas Instruments Incorporated. Copyright © 1997, Texas Instruments Incorporated 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 FLT VCOMPEN VCOMP IN0 IN1 IN2 IN3 CS SDO SDI SCLK VCC VBAT N/C RESET DRAIN0 GATE0 DRAIN1 GATE1 GATE2 DRAIN2 GATE3 DRAIN3 GND DB PACKAGE (TOP VIEW) PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Аналогичный номер детали - TPIC44L02DB |
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Аналогичное описание - TPIC44L02DB |
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