UBA2016AP datasheet(29/42 Pages) PHILIPS

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UBA2016A_15_15A

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Objective data sheet

Rev. 1 — 20 May 2011

29 of 42

NXP Semiconductors

UBA2016A/15/15A

600 V fluorescent lamp driver

[1]

Default setting; see Table 7.

[2]

The threshold for the brownout protection is slightly below the normal regulation level on pin FBPFC. The design guarantees that it will

always be below this level because the clamp current from the PFC OTA is used as a signal.

Vth(cm)SHHB

capacitive mode detection threshold

voltage on pin SHHB

tno(LH)

-30

μs

gm(hswr)

hard switching regulation

transconductance

UBA2016A; Ignition state

hard switching step on pin

SHHB above Vth(hswr)(SHHB)

per extra volt step at

fsw =50kHz

-18

μA/V

Vth(scp)(CPT)

short-circuit protection threshold voltage

on pin CPT

120

160

Rpar(ext)(CPT)

external parallel resistance on pin CPT

700

Rs(ext)(CPT)

external series resistance on pin CPT

tto(fault)

fault time-out time

CCPT = 100 nF

0.16

0.19

0.22

tto(ph)/tto(fault)

ratio between preheat time-out time and

fault time-out time

Rpar(ext) = 700 kΩ;

Rs(ext) not connected (short)

33.4

3.8

Rpar(ext) not connected (open);

Rs(ext) not connected (short)

4.7

5.2

5.7

Rpar(ext) not connected (open);

Rs(ext) =40 kΩ

911.5

Ibo(CF)

brownout current on pin CF

VCOMPPFC =Vhigh(COMPPFC);

VFBPFC =1.0 V; VCF =1.5 V

μA

V(Vreg-Vth(bo))

regulation voltage to brownout threshold

voltage difference on pin FBPFC

VCOMPPFC =Vhigh(COMPPFC)

[2] 10

Idch(bo)CIFB

brownout discharge current on pin CIFB VCOMPPFC =Vhigh(COMPPFC);

VFBPFC =1.0 V; VCIFB =2.0 V

μA

Boost

fsw(bst)(low)

low boost switching frequency

IBOOST ≥ Isat(BOOST);

Cext(CF) =200 pF

kHz

Nf(bst)low

low boost frequency constant

0.14

0.165 0.19

μA

Vreg(bst)(IFB)

boost regulation voltage on pin IFB

IBOOST ≥ Isat(BOOST)

1.75

1.84

1.93

NVreg(bst)

boost regulation voltage constant

0.180 0.21

0.24

μA

Isat(BOOST)

saturation current on pin BOOST

2.3

2.7

3.1

μA

VBOOST

voltage on pin BOOST

IBOOST =1 μA-

IBOOST =5 μA-

1.4

IBOOST =50 μA-

2.2

Temperature protection

Tth(act)otp

overtemperature protection activation

threshold temperature

120

140

160

°C

Tth(rel)otp

overtemperature protection release

threshold temperature

°C

Table 6.

Characteristics …continued

Tamb = 25 °C; settings according to default setting[1]; all voltages referenced to GND; current flow into the IC is positive;

unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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