herunterladen
Application Report
SLIA082 - June 2000
1
TPIC6C596 Power+ Logic
Shift Register Application
Thomas E. Cosby MSDS Power Control Products
ABSTRACT
The TPIC6C596 is a serial-in parallel-out, Power+Logic 8-bit shift register with low-side
switch DMOS outputs rating of 100 mA per channel. The device is designed to drive resistive
and inductive loads and is particularly well suited as an interface between a microcontroller
and LEDs or lamps. The TPIC6C596 is an enhancement of the TPIC6C595, where the shift
register serial output (SER OUT) is clocked on the falling edge of the serial clock to provide
additional hold time in applications where several devices are cascaded. This report focuses
on three of the many possible applications for the TPIC6C596.
Contents
LED Sign 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graphic Status Panel 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Status Indicator 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Considerations With the TPIC6C596 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Incandescent Lamps 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power and Thermal Considerations 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conclusion 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Figures
1 The Self-Writing LED Display Sign 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Graphic Status Panel for Industrial Machines 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Real-Time Fault Status Indicator 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Timing Minimums, Setup, and Hold 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Lamp Inrush Current at Turn-On 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power+Logic is a trademark of Texas Instruments.
