The Analog Devices Inc. DC2902A Evaluation Board features a 2.7V to 5.5V input voltage range and can deliver up to 1.5A of sinking or sourcing current. Inside the LTM4663, a linear power stage works together with a PWM power stage to form an H-bridge configuration. The direction of the current fed through the TEC can be either positive (for cooling mode) or negative (for heating mode).
Furthermore, the DC2902A Board offers a default 2MHz switching frequency and can be synchronized to an external clock from 1.85MHz to 3.25MHz applied to the EN/SY input pin (JP1: EN/SY). The maximum TEC current limit can be programmed with a resistor, R7 (default: 1.5A for cooling mode; -1.5A for heating mode), and the maximum TEC voltage limit can be programmed with a resistor, R10 (default: 5V for cooling mode; -4.8V for heating mode). Additional features include VTEC output for TEC voltage monitor and ITEC output for TEC current monitor.