Moteur de recherche de fiches techniques de composants électroniques |
|
SA303-IHZ Fiches technique(PDF) 6 Page - Cirrus Logic |
|
SA303-IHZ Fiches technique(HTML) 6 Page - Cirrus Logic |
6 / 14 page SA303 6 SA303U P r o d u c t I n n o v a t i o n F r o m Pin# PinName SignalType Simplified Pin Description 9 SGND Power Analog and digital GND – internally connected to PGND 11 Bt Logic Input Logic high commands B phase upper FET to turn on 13 Bb Logic Input Logic high commands B phase lower FET to turn on 15 Ab Logic Input Logic high commands A phase lower FET to turn on 17 At Logic Input Logic high commands A phase upper FET to turn on 19 V DD Power Logic Supply (5V) 21 Ia Analog Output Phase A current sense output 23 DIS2 Logic Input Logic high places all outputs in a high impedance state 25 TEMP Logic Output Thermal indication of die temperature above 135ºC 42,43,44 OUT B Power Output Half bridge b Power Output 46,47,48,49 V S (phase B&C) Power High Voltage Supply phase b&C 33,34,35 OUT A Power Output Half bridge A Power Output 37,38,39,40 PGND (phase A&b) Power High Current GND Return Path for Power Outputs A&b 26,27,58,59 HS Mechanical Pins connected to the package heat slug 2,4,6,8,10, 12,14,16,18, 20,22,24,28, 32,36,41,45, 50,54,60,62, 64 NC --- Do Not Connect .2PinDescriptions V S: Supply voltage for the output transistors. These pins require decoupling (1μF capacitor with good high frequen- cy characteristics is recommended) to the PGND pins. The decoupling capacitor should be located as close to the V S and PGND pins as possible. Additional capacitance will be required at the VS pins to handle load cur- rent peaks and potential motor regeneration. Refer to the applications section of this datasheet for additional discussion regarding bypass capacitor selection. Note that V S pins 29-31 carry only the phase A supply current. Pins 46-49 carry supply current for phases b & C. Phase A may be operated at a different supply voltage from phases B & C. Both V S voltages are monitored for undervoltage conditions. OUTA,OUTB,OUTC: These pins are the power output connections to the load. NOTE: When driving an induc- tive load, it is recommended that two Schottky diodes with good switching characteristics (fast t RR specs) be connected to each pin so that they are in parallel with the parasitic back-body diodes of the output FETs. (See Section 2.6) PgND:Power Ground. This is the ground return connection for the output FETs. Return current from the load flows through these pins. PGND is internally connected to SGND through a resistance of a few ohms. See section 2.1 of this datasheet for more details. SC:Short Circuit output. If a condition is detected on any output which is not in accordance with the input com- mands, this indicates a short circuit condition and the SC pin goes high. The SC signal is blanked for approxi- mately 200ns during switching transitions but in high current applications, short glitches may appear on the SC pin. A high state on the SC output will not automatically disable the device. The SC pin includes an internal 12kΩ series resistor. Ab,Bb,Cb:These Schmitt triggered logic level inputs are responsible for turning the associated bottom, or lower N-channel output FETs on and off. Logic high turns the bottom N-channel FET on, and a logic low turns the low side N-channel FET off. If Ab, bb, or Cb is high at the same time that a corresponding At, bt, or Ct input is high, protection circuitry will turn off both FETs in order to prevent shoot-through on that output phase. Protection circuitry also includes a dead-time generator, which inserts dead time in the outputs in the case of simultane- ous switching of the top and bottom input signals. TABLE.PINDESCRIPTIONS-Cont. |
Numéro de pièce similaire - SA303-IHZ |
|
Description similaire - SA303-IHZ |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants 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 |