The TPLD achieves an ultra-low quiescent current (<1uA) in standby states. This exceptional efficiency allows the device to remain connected to an always-on supply rail directly from the battery. Within InterConnect Studio (ICS), the primary clock routing is optimized by enabling the internal low-frequency oscillator (LF_OSC). This configuration minimizes dynamic switching losses and verifies a highly reliable hardware supervisory baseline before the main microcontroller (MCU) system initializes. For more details, see Low Power Operation in TI Programmable Logic Devices (TPLD).

In BMS systems, the host MCU/AFE shuts down in shipping or storage mode and must wake up when pressing the button, when the charger is plugged in or there is a fault occurring with different asynchronous external signals: pulse, active high, or active low. During system operation, the window watchdog timer (WDT) is implemented to mitigate MCU firmware freeze risks. It is simple to design wakeup orchestration and WDT with TPLD in one chip to reduce layout size and quiescent current.

As shown in Figure 2-2, the TPLD utilizes a three-input OR gate to aggregate distinct wake-up signals. Within this simulation model, the TPLD incorporates inverters to configure the required signal logic inversion and employs edge-triggered flip-flops to robustly capture transient or pulse signals.