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NXP Semiconductors UM10525 User Manual

NXP Semiconductors UM10525 User Manual

120 v 20 w cfl
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UM10525
120 V 20 W CFL demo board using the UBA2212
Rev. 1 — 19 April 2012
Document information
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Keywords
Abstract
Content
UBA2212, demo board, CFL, boost, 120 V (AC), 20 W
This document is a user manual for the UBA2212 120 V, 20 W demo
board
User manual

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Summary of Contents for NXP Semiconductors UM10525

  • Page 1 UM10525 120 V 20 W CFL demo board using the UBA2212 Rev. 1 — 19 April 2012 User manual Document information Info Content Keywords UBA2212, demo board, CFL, boost, 120 V (AC), 20 W Abstract This document is a user manual for the UBA2212 120 V, 20 W demo...

  • Page 2: Contact Information

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 Revision history Date Description 20120419 first issue Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com UM10525 All information provided in this document is subject to legal disclaimers.

  • Page 3: Introduction

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 1. Introduction The UBA2212 series is a family of high voltage monolithic integrated circuits for driving Compact Fluorescent Lamps (CFL) in half-bridge configurations. It is derived from the UBA2211 IC and modified to drive a 120 V (AC) application.

  • Page 4: Safety Warning

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 2. Safety Warning WARNING Lethal voltage and fire ignition hazard The non-insulated high voltages that are present when operating this product, constitute a risk of electric shock, personal injury, death and/or ignition of fire.

  • Page 5: Specifications

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 3. Specifications Table 1. Demo board specification Parameter State Value Comment AC line input voltage 96 V (AC) to 144 V (AC) board optimized for 120 V (AC), 60 Hz.

  • Page 6: Schematic And Functional Description

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 4. Schematic and functional description L FILT C DVDT C FS SGND SGND SENSE PGND SGND AC input C BUF UBA2212 DVDT R fuse R osc C VDD...
  • Page 7 UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 lamp osc(nom) ..VCO input time (s) preheat ignition and boost burn transition 001aan302 Fig 4. Timing sequence of the system In preheat, current I charges capacitor C...

  • Page 8: Measurement Results

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 5. Measurement results Using a typical 20 W lamp, the measurements show that the boost effect is visible to the human eye when the light is powered up. The same situation is not visible when the same lamp is used without boost feature.
  • Page 9 UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 (1) I signal. lamp (2) SW signal timing for preheat. (3) CB signal timing for boost and transition. (4) Half-bridge voltage. Fig 6. Time sequence for a boost lamp with a zoom function applied to the preheat state (1) I signal.
  • Page 10 UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 Table 2. Electrical parameters 12 W boost lamp (UBA2212BT N1B) Boost ratio = 1.49; boost time = 38.5 s (25 cycles); transition time = 2 s. State...

  • Page 11: Boost Lamp With High Lamp Voltage

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 5.1 Boost lamp with high lamp voltage During boost state, lamps consume more power. As a result, the half-bridge valley voltage value is pulled low. In addition, CM or hard switching occurs especially when a high lamp voltage with used with a low mains input.

  • Page 12: Rms Control In Boost And Steady States

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 5.2 RMS control in boost and steady states When ignition frequency is reached, the lamp ignites. V increases to a given voltage to set the lamp current at the level defined by the internal boost reference and resistor R...

  • Page 13: Saturation Current Protection

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 (1) VDD signal. (2) I signal. lamp (3) Half-bridge voltage. (4) CB signal timing for boost and transition. Fig 10. OTP function activated in boost state 5.4 Saturation Current protection A critical parameter in the design of the lamp inductor is its saturation current.

  • Page 14: Capacitive Mode Protection

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 (1) Half-bridge voltage. (2) I signal. lamp (3) RC signal. Fig 11. IC operation with saturated inductor at ignition 5.5 Capacitive mode protection The UBA2212 detects hard switching operations to prevent stress on MOSFETs using the internal Zero-Voltage Switching (ZVS) control circuit.
  • Page 15 UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 Fig 12. CMP in the burn state UM10525 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. User manual Rev.

  • Page 16: Schematic And Bill Of Materials (Bom)

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 6. Schematic and Bill Of Materials (BOM) The components used are illustrated in Figure 3 Figure Table 3 describes the components required for 120 V reference board application.

  • Page 17: Pcb Layout

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 Table 3. Bill of materials …continued Number Reference Typical value Quantity PC40-EE16; 1.5 mH; 1 A; N = 180:6:6; diameter 0.23 mm UBA2212CT; SO14 Burner burner; T3 Spiral 20 W 7.
  • Page 18 UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 Fig 15. 12 W Baishi CFL Table 5. Electrical parameters 12 W boost lamp (UBA2212BT N1B)   Boost ratio = 1.56.; C = 22 F, 250 V; L2 = 1.75 mH, 2 ;...

  • Page 19: References

    UM10525 NXP Semiconductors 120 V 20 W CFL demo board using the UBA2212 9. References UBA2212 — Half-bridge power IC family for CFL lamps data sheet. UM10525 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.

  • Page 20: Legal Information

    NXP Semiconductors’ aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance In no event shall NXP Semiconductors, its affiliates or their suppliers be liable with the Terms and conditions of commercial sale of NXP Semiconductors.

  • Page 21: Table Of Contents

    ‘Legal information’. © NXP B.V. 2012. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 19 April 2012 Document identifier: UM10525...

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