The ADN88311 is a monolithic TEC controller. It has two integrated, zero drift, rail-to-rail comparators, and a PWM driver. A unique PWM driver works with an analog driver to control external selected MOSFETs in an H-bridge. By sensing the thermal detector feedback from the TEC, the ADN8831 can drive a TEC to settle the programmable temperature of a laser diode or a passive component attached to the TEC module. The ADN8831 supports NTC thermistors or positive temperature coefficient (PTC) RTDs. The target temperature is set as an analog voltage input either from a DAC or from an external resistor divider driven by a reference voltage source. A proportional integral differential (PID) compensation network helps to quickly and accurately stabilize the ADN8831 thermal control loop. An adjustable PID compensation network example is described in the AN-695 Application Note, Using the ADN8831TEC Controller Evaluation Board. A typical reference voltage of 2.5 V is available from the ADN8831 for thermistor temperature sensing or for TEC voltage/current measuring and limiting in both cooling and heating modes. Applications * Thermoelectric cooler (TEC) temperature control * DWDM optical transceiver modules * Optical fiber amplifiers * Optical networking systems * Instruments requiring TEC temperature control 1 Product is covered by U.S. Patent No. 6,486,643 * Two integrated zero drift, rail-to-rail, chop amplifiers * TEC voltage and current operation monitoring * Programmable TEC maximum voltage and current * Programmable TEC current heating and cooling limits * Configurable PWM switching frequency up to 1 MHz * Power efficiency: > 90% * Temperature lock indication * Optional internal or external clock source https://elecena.pl/product/5068229/a-high-efficiency-tec-controller-solution 2015-03-29 https://elecena.pl/product/5068229/a-high-efficiency-tec-controller-solution 2018-03-28 https://elecena.pl/product/5068229/a-high-efficiency-tec-controller-solution 2025-01-17