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PDF BIT3106A Data sheet ( Hoja de datos )
| Número de pieza | BIT3106A | |
| Descripción | High Efficiency Dual PWM Controller | |
| Fabricantes | Beyond | |
| Logotipo |  |
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Beyond Innovation Technology Co., Ltd.
Data Sheet
BIT3106A
BIT3106A
High Efficiency Dual PWM Controller
Version: 1.2
Notice
All information contained in this document is subject to change without notice.
No part of this document may be copied or reproduced in any form or by any means without
the prior written consent of Beyond Innovation Technology Co., Ltd.
2003/8/15
Confidential, for authorized user only
page 1 of 11
1 page  
Beyond Innovation Technology Co., Ltd.
BIT3106A
Multi-Lamp Operation: In the case of multi-lamp operation, several criteria must be considered:
(1)To keep the lamp current to be balanced.
(2)To synchronize the lamp frequency to reduce the interference.
(3)To synchronize the phase of the lamps to minimize the leakage between the lamps.
(4)To determine when to start the PWM dimming.
The bellowing figure is an example to use more than one BIT3106A for multi-lamp operation.
R1 R2
ICVDD
R3
VREF
BIT3106A
IC(1)
BIT3106A
X IC ( 2...N )
Rsyncf
Rreadyn
ICVDD
Rsyncr
In above figure each chip uses same reference that can keep the lamps balanced. BIT3106A uses two-pin SYNCR
(10) and SYNCF (11) to synchronize both of lamp frequency and phase. With two ~ 51 K ohm resistors connected to
VDD and GND as above figure shows, the chip with highest frequency will dominate the operation frequency and phase
of the whole system. The timing of PWM dimming is dependent on operation situations. In normal case, all of the
lamps have been ignited then the pin READYN is pulled to logic low level to start the bursts from pin PWMOUT. But if
any one of the lamps is open, the burst will be sent while the user set striking period has been over.
2003/8/15
Confidential, for authorized user only
page 5 of 11
5 Page 
Beyond Innovation Technology Co., Ltd.
Package Information :
SSOP type :
BIT3106A
DIP type
2003/8/15
Confidential, for authorized user only
page 11 of 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet BIT3106A.PDF ] | |
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