STPIC44L02 STMicroelectronics, STPIC44L02 Datasheet
STPIC44L02
Related parts for STPIC44L02
STPIC44L02 Summary of contents
Page 1
... Each driver channel has independent off-state open-load detection and on-state shorted load short to battery detection. The STPIC44L02 offers a battery over voltage and undervoltage detection and shutdown fault occurs while using the STPIC44L02, the channel transitates into a low duty cycle, pulse width modulated (PWM) signal as long as the fault is present ...
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... STPIC44L02 output buffer that puts SDO in a high impedance state and clears and reenables the fault register. The STPIC44L02 was designed to allow the serial input interfaces of multiple devices to be cascated together to simplify the serial interface of the controller. Serial input data flows through the device and is transferred out SDO following the fault data in cascaded configurations ...
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... Figure 1 : Schematic Diagram STPIC44L02 3/21 ...
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... STPIC44L02 PIN DESCRIPTION PIN No SYMBOL 1 FLT 2 VCOMPEN 3 VCOMP 4 IN0 5 IN1 6 IN2 7 IN3 SDO 10 SDI 11 SCLK GND 14 DRAIN0 16 DRAIN1 19 DRAIN2 21 DRAIN3 15 GATE0 17 GATE1 18 GATE2 20 GATE3 22 RESET BAT 4/21 I/O NAME AND FUNCTION I Fault Flag. FLT is a logic level open-drain output that provides a real time fault flag for shorted-load, open-load, over-battery voltage, under-battery voltage faults ...
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... High Level Input Voltage IH V Low Level Input Voltage IL t Set-up Time, SDI High Before SCLK s t Hold Time, SDI High After SCLK h T Operating Case Temperature C Parameter Parameter STPIC44L02 Value Unit - ...
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... STPIC44L02 ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING FREE-AIR TEMPERATURE RANGE (unless otherwise specified.) Symbol Parameter I Supply Current BAT I Supply Current CC V Over Battery Voltage (ovsd) Shutdown V Over Battery Voltage Reset hys(ov) Hysteresys V Under Battery Voltage ...
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... Over Battery Fault (see figure 10K to GND C = 200pF Fault (see figure 10K C = 50pF L L (see figure 10K C = 50pF L L (see figure 9) STPIC44L02 = 25°C, unless otherwise specified.) Min. Typ. Max 3 1.2 15 Unit ...
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... STPIC44L02 Figure 3 : Switching Time Figure 4 : Setup Time CS 8/21 to SCLK ...
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... Figure 5 : Propagation Delay Time Figure 6 : Propagation Delay Time Figure 7 : SDO Switching Time STPIC44L02 9/21 ...
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... STPIC44L02 Figure 8 : SDO Switching Time Figure 9 : FLT Switching Time PRINCIPLES OF OPERATION SERIAL DATA OPERATION The STPIC44L02 offers serial input interface to the microcontroller to transfer control data to the predriver and fault data back to the controller. The serial input interface consists of: SCLK - Serial Clock ...
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... Figure 10 : Serial Programming Example Figure 11 : 8-Bit Serial Programming Example (single device) STPIC44L02 11/21 ...
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... STPIC44L02 Figure 12 : 8-Bit Serial Programming Example (two predrivers cascated) Figure 13 : Fault Reading Example PARALLEL INPUT DATA OPERATION In addition to the serial interface the STPIC44L02 also provides a parallel microcontroller. The output turns on when either the parallel or the serial interface make it turn on. ...
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... The STPIC44L02 monitors the drain voltage of each channel to detect shorted load conditions. The onboard deglitch timer starts running when the gate output to the power FET transitates from the off state to the on state. The timer provides deglitch time, t (STBFM) voltage to stabilize after the power FET has been turned on (see figure 16 and 17) ...
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... The on-board deglitch timer starts running when the STPiC44L02, gate output to the power FET transitates to the off state. The timer provides a 60ms deglitch time, T the drain voltage to stabilize after the powerFET has been turned off. The deglitch time is only ...
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... FLAT that an open-load fault condition exists. The microcontroller can then read the serial port on the STPiC44L02 to isolate the channel that reported the fault condition. Fault bits 0-3 distinguish faults for each of the output Figure 17 : Open Load Short Circuit test Circuitry Figure 18 : Normal Condition Driving Load channels ...
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... FLT. The over-battery-voltage fault is not reported in the Figure 20 : Under Battery Shutdown UNDER-BATTERY-VOLTAGE SHUTDOWN The STPIC44L02 monitors the battery voltage to prevent the power FETs from being turned on in the event that the battery voltage is too low. When the ...
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... V . The internal reference is COMP selected by connecting V COMPEN V is selected by connecting V COMP (see Figure 23). Proper layout techniques should be used in the grounding network for the V circuit on the STPIC44L02. The ground for the STPIC44L02 to GND and to V COMPEN CC COMP 17/21 ...
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... STPIC44L02 predriver and V COMP connected to a Kelvin ground if available; otherwise, they should make single-point contact Figure 23 : External Reference Selection TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T Figure 24 : Open Load Off State Detection Current 18/21 network should be back to the power ground of the FET array. ...
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... PIN 1 IDENTIFICATION SSOP24 MECHANICAL DATA mm. TYP MAX. 2 1.75 1.85 0.38 0.25 8.2 8.5 7.8 8.2 5.3 5.6 0.65 BSC 8˚ 0.75 0. STPIC44L02 inch MIN. TYP. MAX. 0.079 0.002 0.065 0.069 0.073 0.009 0.015 0.004 0.010 0.311 0.323 0.335 0.291 0.307 0.323 0.197 0.209 0.220 0.0256 BSC 0˚ 8˚ 0.022 0.030 ...
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... STPIC44L02 DIM. MIN 12 8.4 Bo 8.7 Ko 2.9 Po 3.9 P 11.9 20/21 Tape & Reel SSOP24 MECHANICAL DATA mm. TYP MAX. 330 13.2 22.4 8.6 8.9 3.1 4.1 12.1 inch MIN. TYP. MAX. 12.992 0.504 0.519 0.795 2.362 0.882 0.331 0.339 0.343 0.351 0.114 0.122 0.153 0.161 0.468 0.476 ...
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