Overview
The UBA2021T/N2,112 is a high voltage integrated circuit (IC) designed by NXP USA Inc. to drive and control Compact Fluorescent Lamps (CFL) and fluorescent TL lamps. This IC is part of the UBA2021 family and is specifically packaged in a 14-pin SOIC (Small Outline Integrated Circuit) package. It provides comprehensive control functions for the entire lamp operation cycle, including preheating, ignition, and steady-state operation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| High voltage supply (VFS) | High side supply voltage, IFS < 15 µA; t < 0.5 s | - | - | 630 | V |
| Start-up state (VVS(start)) | Oscillator start voltage | - | 11.95 | - | V |
| Standby current (IVS(standby)) | VVS = 11 V | - | 200 | - | µA |
| Preheat mode frequency (fstart) | - | - | 108 | - | kHz |
| Preheat time (tph) | CCP = 100 nF | - | 666 | - | ms |
| Ignition time (tign) | - | - | 625 | - | ms |
| Non-overlap time (tno) | - | - | 1.4 | - | µs |
| Total supply current (Itot) | fB = 43 kHz | - | 1 | - | mA |
| High and low side on resistance (RG1(on), RG2(on)) | - | - | 126 | - | Ω |
Key Features
- Adjustable preheat and ignition time.
- Adjustable preheat current.
- Adjustable lamp power.
- Lamp power independent from mains voltage variations.
- Overpower protection.
- Lamp temperature stress protection at higher mains voltages.
- Capacitive mode protection.
- Protection against a drive voltage that is too low for the power MOSFETs.
- Level shift and drive functions for external half-bridge power MOSFETs.
Applications
The UBA2021T/N2,112 is primarily used in the control and driving of Compact Fluorescent Lamps (CFL) and fluorescent TL lamps. It is suitable for applications where electronic ballasting is required, such as in lighting systems that operate with mains voltages up to 240 V (RMS).
Q & A
- What is the primary function of the UBA2021T/N2,112 IC? The primary function of the UBA2021T/N2,112 IC is to drive and control Compact Fluorescent Lamps (CFL) and fluorescent TL lamps.
- What is the maximum high voltage supply for the UBA2021T/N2,112? The maximum high voltage supply for the UBA2021T/N2,112 is 630 V.
- What are the adjustable parameters in the UBA2021T/N2,112? The UBA2021T/N2,112 allows for adjustable preheat and ignition time, adjustable preheat current, and adjustable lamp power.
- What kind of protection does the UBA2021T/N2,112 offer? The UBA2021T/N2,112 offers overpower protection, lamp temperature stress protection, capacitive mode protection, and protection against low drive voltage for the power MOSFETs.
- What is the typical standby current of the UBA2021T/N2,112? The typical standby current of the UBA2021T/N2,112 is 200 µA when VVS = 11 V.
- What is the preheat mode frequency of the UBA2021T/N2,112? The preheat mode frequency of the UBA2021T/N2,112 is typically 108 kHz.
- What is the ignition time of the UBA2021T/N2,112? The ignition time of the UBA2021T/N2,112 is typically 625 ms.
- What is the non-overlap time of the UBA2021T/N2,112? The non-overlap time of the UBA2021T/N2,112 is typically 1.4 µs.
- What is the total supply current of the UBA2021T/N2,112 during normal operation? The total supply current of the UBA2021T/N2,112 during normal operation is typically 1 mA when fB = 43 kHz.
- In what package is the UBA2021T/N2,112 available? The UBA2021T/N2,112 is available in a 14-pin SOIC package.
