Overview
The L6382D5, produced by STMicroelectronics, is a power management unit designed for microcontrolled electronic ballasts. It is fabricated using High-voltage BCD Off-line technology and is equipped with a high voltage start-up generator. This IC is suitable for applications that include a Power Factor Correction (PFC) stage and a half-bridge stage, making it ideal for dimmable and non-dimmable ballast systems. The L6382D5 integrates multiple functions, including drivers for PFC, half-bridge, and pre-heating MOSFETs, as well as advanced power management logic to minimize power losses and enhance application reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| IC Supply Voltage (VCC) | 13 to 15 | V |
| High Voltage Start-Up Generator Voltage | -0.3 to 600 | V |
| Operating Frequency | 15 to 400 KHz | |
| Storage Temperature | -40 to +150 | °C |
| Ambient Temperature Operating Range | -40 to +125 | °C |
| Maximum Thermal Resistance Junction-Ambient | 120 | °C/W |
| Turn-On Voltage (VccON) | 13 to 15 | V |
| Turn-Off Voltage (VccOFF) | 8.5 to 9.5 | V |
| Save Mode Voltage (VccSM) | 12.75 to 14.85 | V |
| Reference Voltage (VREF) | 4.9 to 5.1 | V |
| Load Regulation | -20 to 2 mV |
Key Features
- Integrated high-voltage start-up generator
- Four drivers for PFC, half-bridge, and pre-heating MOSFETs
- Fully integrated power management for all operating modes
- 5V microcontroller compatible
- Internal two-point VCC regulator
- Over-current protection with digital output signal
- Cross-conduction protection (interlocking)
- Under voltage lock-out
- Integrated bootstrap diode
- Precise reference voltage (+5V ±2%) capable of supplying up to 30mA
Applications
The L6382D5 is primarily used in microcontrolled electronic ballasts, including both dimmable and non-dimmable ballast systems. It is designed to support applications that require a PFC stage and a half-bridge stage, making it versatile for various lamp wattage and types by simply adjusting the microcontroller software.
Q & A
- What is the primary function of the L6382D5?
The L6382D5 is a power management unit designed for microcontrolled electronic ballasts, integrating drivers for PFC, half-bridge, and pre-heating MOSFETs. - What technology is used in the fabrication of the L6382D5?
The L6382D5 is fabricated using High-voltage BCD Off-line technology. - What is the range of the high voltage start-up generator?
The high voltage start-up generator voltage range is from -0.3 to 600 V. - What is the operating frequency range of the L6382D5?
The operating frequency range is from 15 to 400 KHz. - What is the maximum thermal resistance junction-ambient of the L6382D5?
The maximum thermal resistance junction-ambient is 120 °C/W. - What is the reference voltage provided by the L6382D5?
The reference voltage is +5V ±2%, capable of supplying up to 30mA. - Does the L6382D5 have over-current protection?
Yes, the L6382D5 includes over-current protection with a digital output signal. - What type of protection does the L6382D5 offer against cross-conduction?
The L6382D5 offers cross-conduction protection through an interlocking function. - Can the L6382D5 be used for different lamp types and wattages?
Yes, the L6382D5 allows designers to use the same ballast circuit for different lamp wattage/types by simply changing the microcontroller software. - What is the purpose of the integrated bootstrap diode in the L6382D5?
The integrated bootstrap diode replaces the external bootstrap diode, optimizing the high-side gate-drive floating supply voltage.
