Overview
The TPS92661-Q1, produced by Texas Instruments, is a high-brightness LED matrix manager designed specifically for automotive headlight systems. This device is a compact, highly-integrated solution that enables dynamic control of large arrays of high-brightness LEDs. It features a 12-switch series array for bypassing individual LEDs in the string, allowing for individual control and adaptive beam forming. The device includes a serial communication interface for control and management by a master microcontroller, making it ideal for dynamic headlight applications where pixel-level control is necessary.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 48-pin TQFP (PHP) with Exposed Pad |
| Package Size | 7.00 mm × 7.00 mm |
| Number of LED Bypass Switches | 12 |
| Switch Voltage Rating | Up to 67 V above GND |
| PWM Dimming Resolution | 10-bit |
| Communication Interface | Multi-drop UART |
| Operating Temperature Range | -40°C to 125°C |
| Junction Temperature Range | -40°C to 150°C |
| Power Supply Input | 5 V (with 3.3 V regulated output option) |
| Thermal Resistance (Junction-to-Ambient) | 25.7 °C/W |
Key Features
- 12 series LED bypass switches with low on-resistance (RDS(on)) to minimize conduction loss and power dissipation.
- Programmable 10-bit PWM dimming with individual turn-on and turn-off times for each LED.
- Inherent phase shift capability and device-to-device synchronization.
- LED open and short detection and protection with fault reporting via the serial interface.
- Multi-drop UART communication interface for serial communication with a host MCU and up to 8 slave TPS92661 devices.
- AEC-Q100 Grade 1 qualification for automotive reliability.
- Thermally enhanced package with a feed-through topology for easy signal routing.
- Slew rate limited switch transitions to mitigate EMI concerns.
Applications
- Automotive headlight systems, including adaptive beam forming and dynamic headlight applications.
- High-brightness LED matrix systems requiring individual pixel-level control.
Q & A
- What is the primary function of the TPS92661-Q1 device?
The TPS92661-Q1 is a high-brightness LED matrix manager designed for controlling large arrays of high-brightness LEDs in automotive headlight systems. - How many LED bypass switches does the TPS92661-Q1 have?
The device features 12 series LED bypass switches. - What is the maximum voltage rating for the LED bypass switches?
The switches can float up to 67 V above ground potential. - What type of communication interface does the TPS92661-Q1 use?
The device uses a multi-drop UART communication interface. - Can the TPS92661-Q1 devices be synchronized?
Yes, multiple TPS92661 devices can be synchronized using the SYNC signal to ensure simultaneous operation. - What is the resolution of the PWM dimming provided by the TPS92661-Q1?
The PWM dimming resolution is 10-bit. - Does the TPS92661-Q1 have built-in fault detection and reporting?
Yes, it includes LED open and short detection and protection with fault reporting via the serial interface. - What is the operating temperature range of the TPS92661-Q1?
The operating temperature range is -40°C to 125°C. - What type of package does the TPS92661-Q1 come in?
The device is packaged in a 48-pin TQFP (PHP) with an exposed pad. - Is the TPS92661-Q1 qualified for automotive use?
Yes, it is AEC-Q100 Grade 1 qualified.
