The TPS99000-Q1 is an integral component of the DLP553x-Q1 and DLP462x-Q1 chipset, which also includes the DLPC23x-Q1 DMD display controller. It provides features to support ultra-wide dimming requirements, which are unique to automotive. The TPS99000-Q1also provides a high-voltage, high-precision, three-rail regulator to cost-effectively create DMD mirror control voltages (16V, 8.5V, –10V). A complete system power monitor and DMD mirror parking solution is included to increase system robustness and reduce cost. In addition, the TPS99000-Q1 includes numerous system monitoring and diagnostic features, such as configurable ADCs, TIAs, and watchdogs.

An integrated 12-bit ADC supports the illumination system control and provides useful information about the operating condition of the system. Several external ADC channels are included for general usage (LED temperature measurement, and so on). One of the external ADC channels includes a differential input amplifier and is dedicated to LED current measurement. The DLPC23x-Q1 and TPS99000-Q1 ADC control blocks support up to 63 samples per video frame, with precise hardware alignment of samples to the DMD sequence timeline. This information is available to the color control software in the DLPC23x-Q1 where it can be used to counteract the effects of temperature and LED aging to maintain brightness and white point targets.

Two SPI buses are included. The first bus is intended for command and control, and the second is a read-only bus for optional redundant system condition monitoring. The SPI ports include support for byte-level parity checking.

Two transimpedance amplifiers are included. The first TIA is dedicated to illumination control, and the second is available and reconfigurable for general usage, such as redundancy, ambient light detection, and output light validation. An over-brightness detector is included to provide a hardware redundant check of LED brightness.

Two windowed watchdog circuits are included to provide validation of DLPC23x-Q1 microprocessor operation and monitoring of DMD sequencer activity. The TPS99000-Q1 also includes on-die temperature threshold monitoring and a monitor circuit to validate the external clock ratio (of the SEQ_CLK) against an internal oscillator.