UBA2021P datasheet(11/16 Pages) PHILIPS

Part #	UBA2021P

Description	630 V driver IC for CFL and TL lamps

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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11 / 16 page

UBA2021_4

Product data sheet

Rev. 04 — 25 July 2008

11 of 16

NXP Semiconductors

UBA2021

630 V driver IC for CFL and TL lamps

• Where:

• fB = bottom frequency.

• fff = feed-forward frequency.

• fcm = frequency due to capacitive mode detection.

• Preheat time:

• Ignition time:

• Non-overlap time:

12. Application information

t

ph

C

CP

150nF

----------------

R

RREF

30K

Ω

----------------

×

=

t

ign

15

16

------

t

ph

×

=

t

no

1.4

µs

R

RREF

30k

Ω

----------------

×

=

Fig 7.

Application diagram

mgs994

30 k

Ω

490 k

Ω

CCI

CI

RHV

G1

S1

FS

G2

VS

CP

CF

lamp

RREF

SGND

PGND

RS

Cboot

100 nF

CS9

CS4

C4

C3

CS7

C2

DS6

DS7

DS4

DS3

DS2

DS1

13

79

14

CCP

C5

100 nF

8

CCF

100 pF

12

RRREF

Rshunt

RRHV

Vin

10

T2

T1

11

2

3

1

6

5

UBA2021

R1

L1

L2

mains

supply

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UBA2021P Datasheet(PDF) 11 Page - NXP Semiconductors

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