Overview
The TPS61193-Q1, produced by Texas Instruments, is a highly integrated, high-efficiency, and low-EMI LED driver designed specifically for automotive and industrial applications. This device features three high-precision current sinks, each capable of driving up to 100 mA per channel, with an option to combine outputs for higher current capability. The TPS61193-Q1 supports both boost and SEPIC mode operation, with an adaptive output voltage control that minimizes power consumption by adjusting the voltage to the lowest sufficient level. It is qualified for automotive applications, meeting AEC-Q100 standards with an ambient operating temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | 40 | V | |
| Output Voltage Range | 45 | V | ||
| LED Current per Channel | 100 | 100 | mA | |
| Current Matching | 1% | 5% | ||
| Switching Frequency Range | 300 kHz | 2.2 MHz | ||
| PWM Dimming Ratio | 10,000:1 | |||
| Junction-to-Ambient Thermal Resistance | 44.2 | °C/W |
Key Features
- Qualified for automotive applications with AEC-Q100 certification and an operating temperature range of -40°C to +125°C.
- Input voltage range of 4.5 V to 40 V, supporting automotive stop/start and load dump conditions.
- Three high-precision current sinks with current matching of 1% (typical) and LED string current up to 100 mA per channel.
- Outputs can be combined externally for higher current capability.
- High dimming ratio of 10,000:1 at 100 Hz.
- Integrated boost/SEPIC DC-DC converter with adaptive output voltage control and spread spectrum for lower EMI.
- Switching synchronization input and adjustable frequency to avoid AM radio band disturbances.
- Extensive fault detection features including input voltage OVP, UVLO, OCP, open and shorted LED detection, and thermal shutdown.
- PWM brightness control with input frequency range from 100 Hz to 20 kHz.
Applications
- Backlight for automotive infotainment systems, instrument clusters, smart mirrors, heads-up displays (HUD), central information displays (CID), and audio-video navigation (AVN) systems.
- Industrial backlighting systems in control panels and industrial PCs.
- Test and measurement equipment.
Q & A
- What is the input voltage range of the TPS61193-Q1?
The input voltage range is from 4.5 V to 40 V.
- How many current sinks does the TPS61193-Q1 have, and what is their current capability?
The device has three high-precision current sinks, each capable of driving up to 100 mA per channel.
- What is the maximum output voltage of the TPS61193-Q1?
The maximum output voltage is up to 45 V.
- What are the key fault detection features of the TPS61193-Q1?
The device includes input voltage OVP, UVLO, OCP, open and shorted LED detection, and thermal shutdown.
- How is the brightness controlled in the TPS61193-Q1?
Brightness is controlled using PWM with an input frequency range from 100 Hz to 20 kHz.
- What is the thermal operating range of the TPS61193-Q1?
The device operates in a temperature range of -40°C to +125°C.
- Can the outputs of the TPS61193-Q1 be combined for higher current capability?
- What is the switching frequency range of the TPS61193-Q1?
The switching frequency range is from 300 kHz to 2.2 MHz.
- Does the TPS61193-Q1 support spread spectrum for EMI reduction?
- What is the typical current matching accuracy of the TPS61193-Q1?
The typical current matching accuracy is 1%.
