tda4855 NXP Semiconductors, tda4855 Datasheet - Page 30

• Manufacturer Part Number: tda4855
• Description: Autosync Deflection Controller Asdc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PLL2 soft start sequence
1996 Jul 18
handbook, full pagewidth
handbook, full pagewidth
Autosync Deflection Controller (ASDC)
V HPLL2
V HPLL2
Fig.15 PLL2 soft start sequence.
b. PLL2 shut-down sequence.
a. PLL2 start-up sequence.
0.5 V
4.4 V
continuous blanking CLBL (pin 16) activated
PLL2 disabled
frequency detector disabled
HDRV duty factor begins to increase
30
3.7 V
3.7 V
HDRV duty factor has reached nominal value
BDRV enabled
VOUT1 and VOUT2 enabled
HDRV duty factor begins to decrease
BDRV floating
VOUT1 and VOUT2 floating
4.4 V
0.5 V
continuous blanking off
PLL2 enabled
frequency detector enabled
HDRV floating
time
MBG552
time
Preliminary specification
MBG553
TDA4855