 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS452GTVA5 Datasheet(PDF) 3 Page - Cherry Semiconductor Corporation |
|
||||||||||||||||||||||||||||||
CS452GTVA5 Datasheet(HTML) 3 Page - Cherry Semiconductor Corporation |
|
|
3 / 5 page  3 Inductive actuators such as automotive electronic fuel injectors, relays, solenoids and hammer drivers can be powered more efficiently by providing a high current drive until actuation (pull-in) occurs and then decreasing the drive current to a level which will sustain actuation. Pull-in and especially dropout times of the actuators are also improved. The fundamental output characteristic of the CS452/453 provides a low impedance saturated power switch until the load current reaches a predetermined high-current level and then changes to a current source of lower magni- tude until the device is turned off. This output characteris- tic allows the inductive load to control its actuation time during turn-on while minimizing power and stored energy during the sustain period, thereby promoting a fast turn- off time. Automotive injectors at present time come in two types. The large throttle body injectors have an inductance of about 2.0mH and an impedance of 1.2½ and require the CS453 driver. The smaller type, popular worldwide, have an inductance of 4.0mH and an impedance of 2.4½ and needs about a 2.0A pulse for good results, which can be met with the CS452. Some designs are planned which employ two of the smaller types in parallel. The induc- tance of the injectors are much larger at low current, decreasing due to armature movement and core saturation to the values above at rated current. Operating frequencies range from 5.0Hz to 250Hz depend- ing on the injector location and engine type. Duty cycle in some designs reaches 80%. Figure 1. Operating Waveforms (Max. Frequency 250Hz, CONTROL Grounded) Circuit Description >1.4V 0 2.0 4.0ms Input Signal VIN Ipk Load Current Ipk Output Current Ipk (SENSE) Isus VZ VBAT VBAT - (Isus RL) VSAT Output Voltage VZ Ipk VZ Isus Power Dissipation (VBAT - Isus RL) Isus VSAT Ipk ti tp td Timing Diagrams Input Voltage and Output Current vs. Time 4 5 0 IOUT 3 1 0 10 10 9 8 7 6 5 4 3 2 1 0 CS453 2 2.4 5 0 IOUT 1.8 0.6 0 10 10 9 8 7 6 5 4 3 2 1 0 CS452 1.2 |
Similar Part No. - CS452GTVA5 |
|
Similar Description - CS452GTVA5 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
