UNITRODE Manuals

The UC3770A and UC3770B are high-performance full bridge drivers that offer higher current and lower saturation voltage than the UC3717 and the UC3770. Included in these devices are LS-TTL compatible logic inputs, current sense, monostable, thermal shutdown, and a power H-bridge output stage. Two UC3770As or UC3770Bs and a few external components form a complete micro-processor-controllable stepper motor power system. Unlike the UC3717, the UC3770A and the UC3770B require external high-side clamp diodes. The UC3770A and UC3770B are identical in all regards except for the current sense thresholds. Thresholds for the UC3770A are identical to those of the older UC3717 permitting drop-in replacement in applications where high-side diodes are not required. Thresholds for the UC3770B are tailored for half stepping applications where 50%, 71%, and 100% current levels are desirable. The UC3770A and UC3770B are specified for operation from 0°C to 70°C ambient.

The UC1730 family of integrated circuit devices are designed to be used in a number of thermal monitoring applications.

UC1727 is a driver IC produced by Infineon. It can drive isolated IGBTs. It has high and low voltage gate drive function, can receive power and signal from single isolation transformer, and generate split rail for 4A peak bipolar gate drive.

The UC1724 UC2724 UC3724 is a driver for driving isolated power MOSFET gates from Unigroup. The driver uses a pulse transformer and has features such as 500mA output drive, 8 to 35V operating voltage, instantaneous response, programmable operating frequency, undervoltage lockout, and the ability to pass DC information across transformers.

The UC1726 is an isolated drive transmitter that provides a unique solution to driving isolated power IGBTs. It is particularly suited to drive the high side devices on a high voltage H-bridge.

The UC1724 is a product from ON Semiconductor. It is an isolated drive transmitter used to drive isolated power MOSFET gates. It can output 500mA of drive current, operate over an 8-35V voltage range, and transmit logic signals through a pulse transformer. It also supports a frequency of up to 600kHz and has an undervoltage lockout function.

The UC3717A is an improved version of the UC3717, used to switch drive the current in one winding of a bipolar stepper motor. The UC3717A has been modified to supply higher winding current, more reliable thermal protection, and improved efficiency by providing integrated bootstrap circuitry to lower recirculation saturation voltages. The UC3717A features LS-TTL compatible logic input, a current sensor, a monostable, a thermal shutdown network, and an H-bridge output stage. Two UC3717As and a few external components form a complete control and drive unit for LS-TTL or micro-processor controlled stepper motor systems.

The UC3717 is an integrated circuit designed to control and drive the current in one winding of a bipolar stepper motor. It has half-step and full-step capability, built-in fast recovery Schottky commutating diodes, wide range of current control 5-1000mA, wide voltage range 10-45V, designed for unregulated motor supply voltage, current levels can be selected in steps or varied continuously, thermal overload protection.

UC1714/5 UC2714/5 UC3714/5 is a high performance driver with independently programmable delays that can provide drive waveforms for complementary switches. It can be used in synchronous rectifier circuits and active clamp/reset circuits.

The UC1714/5 UC2714/5 UC3714/5 is a high-speed driver with features including single input (PWM and TTL compatible), high-current power FET driver, auxiliary output FET driver, time delay.

UC1711 and UC3711 are dual channel ultra-high-speed FET drivers with 25ns rise and fall time, 15ns propagation delay, 1.5A output drive capability, and a supply voltage range of 5V to 35V. They are made with a high-speed Schottky NPN process to optimize switching speed, temperature stability, and radiation resistance. These devices have inverting logic, TTL-compatible inputs, and output stages that can either source or sink current in excess of 1.5A with minimal cross-conduction charge. The channels are well matched and can be paralleled for doubled output current capability.

The UC1710 UC2710 UC3710 is a high current FET driver from ON Semiconductor.

This datasheet mainly introduces the basic characteristics and functions of the SLUS171A power driver, including operating voltage range, current output, input voltage range, rise and fall times, propagation delay, thermal shutdown and under-voltage protection, high-frequency operation, low cross-conduction current spike, enable and shutdown functions, ESD protection, etc.

This document introduces the features and characteristics of the UC1708 series power drivers, including operating voltage range, output current, rise and fall time, propagation delay, thermal shutdown and under-voltage protection, high-frequency operation, low cross-conduction current spike, enable and shutdown functions, wide input voltage range and ESD protection.

UC1707 UC2707 UC3707 are high-speed dual-channel power drivers with two independent output channels, each of which can be activated by either a high or low logic level signal. Output current can reach 1.5A and the supply voltage ranges from 5V to 40V.