uba20260 NXP Semiconductors, uba20260 Datasheet

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uba20260

Manufacturer Part Number
uba20260
Description
600 V Driver Ic For Step Dimmable Cfls
Manufacturer
NXP Semiconductors
Datasheet
1. General description
2. Features and benefits
2.1 Half-bridge features
2.2 Preheat and ignition features
2.3 Lamp boost features
The UBA20260 is a high-voltage integrated circuit designed to control high power
self-ballasted Compact Fluorescent Lamp (CFL) lighting applications. The UBA20260 is a
controller circuit with advanced features for step dimming and a lamp current controlled
boost feature for boosting cold (amalgam) CFLs.
The controller contains a half-bridge drive function for CFLs, a high-voltage level-shift
circuit with integrated bootstrap diode, an oscillator function, a current control function for
preheat and burn, a timer function and protection circuits. The UBA20260 is supplied
using the dV/dt current charge supply circuit from the half-bridge circuit.
Remark: The mains voltages given in this data sheet are AC voltages.
UBA20260
600 V driver IC for step dimmable CFLs
Rev. 1 — 9 September 2011
Integrated high-voltage level-shift function with integrated bootstrap diode
Coil saturation protection during ignition
Adjustable preheat time
Adjustable preheat current
Ignition lamp current detection
Adjustable boost timing
Fixed boost current ratio of 1.5
Gradually boost to burn transition timing
Objective data sheet

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uba20260 Summary of contents

Page 1

... The controller contains a half-bridge drive function for CFLs, a high-voltage level-shift circuit with integrated bootstrap diode, an oscillator function, a current control function for preheat and burn, a timer function and protection circuits. The UBA20260 is supplied using the dV/dt current charge supply circuit from the half-bridge circuit. ...

Page 2

... SO16 UBA20260 Objective data sheet Description Plastic small outline package; 16 leads; body width 3.9 mm All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs Version SOT109-1 © NXP B.V. 2011. All rights reserved ...

Page 3

SUPPLY REFERENCE VOLTAGES 5 V DIGITAL MEMORY 5 V DIGITAL 5 V ANALOG V DD(stop RESET CP 11 PREHEAT BOOST TIMER CB 12 STEP DIMMER + LOGIC - + - 1 μA 6 ...

Page 4

... All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs 16 GHS 15 HBO SGND UBA20260 n.c. 9 CSI 001aam762 © NXP B.V. 2011. All rights reserved ...

Page 5

... CFLs. The UBA20260 has no dimming control input but instead, four preset fixed dimming levels. Only minor adjustment of the presets is possible. The UBA20260 is rated for a maximum continuous rectified mains voltage of 500 V (with peak 600 V). The UBA20260 includes all functions necessary for preheat, ignition and boost operation of the lamp ...

Page 6

... NXP Semiconductors 7.2 Lamp start-up cycle 7.2.1 Reset state The UBA20260 is in the reset state when the supply voltage on the V V DD(rst) counters and timers are undefined. The hold state latch is reset and both the external high and low side power transistors (Q1/Q2) are non-conductive. ...

Page 7

... To avoid repeated ignition attempts and overheating of the bridge(min) 1 ⁄ of the preheat time second ignition attempt also exceeds the ignition 4 ph All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs CP > V (see Figure 5). DD(start ...

Page 8

... Figure 7 shows the boost and burn state in more detail. In the boost state, the is discharged below the V CB All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs nd 2 failed ignition attempt ...

Page 9

... Figure 4[A]). The CSI (Current Sense Input) pin measures CSI All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs boost a boost time of more than 300 s is possible. In ( ...

Page 10

... IC is reset. DD(rst) pin alternates between V DD (see Figure th(rel)CP All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs Dim_1 state AND Boost 01 Boost_ratio = 1 Boost_ratio = 1.5 NOT (Boost OR Boost transition) Temp > T j(end)bst ...

Page 11

... V HBO 0 Saw-tooth, gate driver and half-bridge output signals All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs and V . Typically, the supply current DD(stop) DD(start) and V . More current is drawn during the ...

Page 12

... Timing diagram for preheat, ignition and overcurrent 7.4 Step dimming The UBA20260 uses the step dimming method of dimming a lamp load. This method enables the lamp to operate in four different light output level modes including full power. The four different dim level modes can be selected by toggling the supply voltage which is made possible by toggling the mains voltage switch ...

Page 13

... k MDL All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs lamp off lamp on new dim level retention start-up is equal to one of i(CSI) ...

Page 14

... i(CSI) MDL 0 ( off-on toggle DD th(sat)SLS is injected into the C o(sat)CF CF All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs DIM_1 100 % off-on toggle V off-on toggle DD DIM_2 (1) DIM_3 (1) MDL 001aam770 . The internal reference current is derived MDL ...

Page 15

... SLS level. th(capm)SLS is above the V SLS All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs discharges enabling CI (typically 2.5 V). The th(sat)SLS value and also SLS th(ocp)SLS , the IC enters Power-down mode ...

Page 16

... OTP changes the lamp current to the level equal to the V j(otp) bridge(max The IC then enters Power-down mode. All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs th(CP)min is reached due to capacitive mode detection supply is internally clamped. The circuit ...

Page 17

... Conditions in free air; SO16 package All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs Min Max 30 36 4 +4  ...

Page 18

... NXP Semiconductors 10. Characteristics Table 5. Characteristics  HBO referenced to PGND and SGND, positive currents flow into the UBA20260, unless otherwise specified. Symbol Parameter Start-up state Pin reset supply voltage DD(rst) V stop supply voltage DD(stop) V start supply voltage ...

Page 19

... Table 5. Characteristics …continued  HBO referenced to PGND and SGND, positive currents flow into the UBA20260, unless otherwise specified. Symbol Parameter Boot strap diode V forward voltage F Preheat current sensor Input pin SLS I input current on pin SLS I(SLS) ...

Page 20

... Table 5. Characteristics …continued  HBO referenced to PGND and SGND, positive currents flow into the UBA20260, unless otherwise specified. Symbol Parameter I boost disable detection current det(dis)bst t transition time from boost to burn t(bst-burn) Pin CSI N lamp current boost ratio ...

Page 21

... Table 5. Characteristics …continued  HBO referenced to PGND and SGND, positive currents flow into the UBA20260, unless otherwise specified. Symbol Parameter V dimming 2 voltage difference on dim2(CSI) pin CSI V dimming 3 voltage difference on pin dim3(CSI) CSI Output pin CI ...

Page 22

...    hys   All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs = 33 k. ext(RREF)  max  –  max th CP   ...

Page 23

... SLS  ------------------------ -   SLS    MDL source MDL All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs + t dch + t dch + t max dch (8) (9) (10) (11) (12) (13) © NXP B.V. 2011. All rights reserved. ...

Page 24

... NXP Semiconductors 11.2 Application Diagram D5 D6 C17 Fig 12. UBA20260 default application diagram Detailed in UBA20260 Objective data sheet C11 CFL C10 CSI Table list of typical application components. See All information provided in this document is subject to legal disclaimers. ...

Page 25

... BZX84JC12 BAS20 4.7 mH Würth Elektronik: 7608000902 All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs Description 2 W fusible resistor adjust for preheat current adjust for minimum lamp current adjust for nominal lamp current ...

Page 26

... REFERENCES JEDEC JEITA MS-012 All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs detail ...

Page 27

... OCP OPP OTA OTP RMS SR UVLO VCO 14. Revision history Table 8. Revision history Document ID Release date UBA20260 v. 1 20110909 UBA20260 Objective data sheet Abbreviations Description Compact Fluorescent Lamp Capacitive Mode Protection Double-Sided Rectifier ElectroStatic Discharge High-Side Low-Side Minimum Dimming Level OverCurrent Protection ...

Page 28

... Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs © NXP B.V. 2011. All rights reserved ...

Page 29

... Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. http://www.nxp.com salesaddresses@nxp.com All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 September 2011 UBA20260 600 V driver IC for step dimmable CFLs © NXP B.V. 2011. All rights reserved ...

Page 30

... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2011. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com UBA20260 All rights reserved. Date of release: 9 September 2011 Document identifier: UBA20260 ...

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