Electronic Components Datasheet Search |
|
UC2626 Datasheet(PDF) 10 Page - Texas Instruments |
|
UC2626 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 23 page UCC2626, UCC3626 SLUS318B – APRIL 1999 – REVISED JANUARY 2002 10 www.ti.com APPLICATION INFORMATION programming the tachometer The UCC3626 tachometer consists of a precision 5-V monostable, triggered by either a rising or falling edge on any of the three Hall inputs, HALLA, HALLB, and HALLC. The resulting TACH_OUT waveform is a variable duty-cycle square wave whose frequency is proportional to motor speed, as given by: TACH_OUT + V P 20 Hz where P is the number of motor pole pairs and V is motor velocity in RPM. The on time of the monostable is programmed via timing resistor R_TACH and capacitor C_TACH according to the following equation: t ON + R_TACH C_TACH sec Figure 5 provides a graph of on times for various combinations of R_TACH and C_TACH. On time is typically set to a value less than the minimum TACH_OUT period as given by: t PERIOD (min) + 20 V MAX P sec where P is the number of motor pole pairs and V is motor velocity in RPM. SYNCH CT WITHOUT SYNCH WITH SYNCH Figure 4. Oscillator Waveforms Figure 5 1.E–06 1.E–05 1.E–04 1.E–03 1.E–02 1.E–01 1.E+00 1.E–10 1.E–09 1.E–08 1.E–07 1.E–06 R_TACH = 250 k Ω R_TACH = 25 k Ω R_TACH = 100 k Ω R_TACH = 500 k Ω C_TACH – Tachometer Timing Capacitance – F TACHOMETER ON-TIME vs TIMING CAPACITANCE (3) (4) (5) |
Similar Part No. - UC2626 |
|
Similar Description - UC2626 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |