Motore di ricerca datesheet componenti elettronici |
|
TS19730CX6RFG Scheda tecnica(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
|
TS19730CX6RFG Scheda tecnica(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
4 / 7 page Z TS19730 Single-Stage Low THD Buck-Boost PWM Control LED Driver 4/7 Version: A15 Typical Application Circuit AC Input 90V~264V MOV Fuse RS VCC OUT TS19730 GND CL COM CS RCL Application Information Start-up Current The typical start-up current is around 45 μA. Very low start-up current allows the PWM controller to increase the value of start-up resistor and then reduce the power dissipation. UVLO(Under Voltage Lockout) A hysteresis UVLO comparator is implemented in TS19730. The turn-on and turn-off thresholds level are fixed at 17.5V and 8V respectively. This hysteresis shown in Fig.3 ensures that the start-up capacitor will be adequate to supply the chip during start-up. For quick start-up of the LED driver, the start-up resistor should be matched with the start-up capacitor. VCC VUVLO(on) VUVLO(off) 17.5V 8V LEB(Leading-Edge Blanking) Each time the power MOSFET is switched on, a turn-on spike will inevitably occur at the sense resistor. To avoid fault trigger, a 400ns leading-edge blanking time is built in. Conventional RC filtering can therefore be omitted. During this blanking period, the current-limit comparator is disabled and cannot switch off the gate driver. OCP(Over Current Protection) The TS19730 has built-in cycle by cycle over current protection function on CL pin. As the CL pin voltage is larger than VOCP (0.3V), the gate output will be turned off immediately to avoid the driver board to be burned out. Fig. 3 Fig. 2 |
Codice articolo simile - TS19730CX6RFG |
|
Descrizione simile - TS19730CX6RFG |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore 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 |