UBA2024T データシートの表示（PDF） - NXP Semiconductors.

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UBA2024T

Half-bridge power IC for CFL lamps

NXP Semiconductors. 

NXP Semiconductors

UBA2024

Half-bridge power IC for CFL lamps

VHV

0

VDD

VDD(startup)

VSW

VDD

0.6 Vtrip(osc)high

0

fosc

2.5nom

time

time

time

nom

0

Vlamp

Vign

VgloA

Vnom

0

minimum glow time control

tsweep

Fig 5. Start-up frequency behavior

time

time

014aaa659

7.6 Glow time control

The inherent glow time of cold-started CFL lamps reduces the switching lifetime of the

electrodes. To make this glow phase as short as possible, the maximum power is given to

the lamp during the glow time via a special control. See Figure 5.

7.7 Non-overlap time

The non-overlap time is defined as the time when both MOSFETs are not conducting. The

non-overlap time is fixed internally.

8. Limiting values

UBA2024_4

Product data sheet

Table 3. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter

Conditions

Min

VHV

voltage on pin HV

normal operation

-

mains transients

-

during 0.5 s

VFS

voltage on pin FS

VHV

Rev. 04 — 17 September 2009

Max

Unit

373

V

550

V

VHV + 14 V

© NXP B.V. 2009. All rights reserved.

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