ST Manuals (Industrial)

The L6911B is a power supply controller specifically designed to provide high-performance DC/DC conversion for Pentium II Microprocessors. It features a precise 5-bit digital-to-analog converter (DAC) that allows for adjustable output voltage from 1.3V to 2.05V in 0.05V binary steps and from 2.1V to 3.5V in 0.1V binary steps. The high-precision internal reference, digitally trimmed, ensures the selected output voltage within +/-1% accuracy. The device provides excellent load transient response and stable output accuracy thanks to the window comparator system. It supports overvoltage protection and overcurrent protection. The operating frequency ranges from 50kHz to 1MHz. It meets Intel Pentium II specifications and includes a disable function.

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The document describes the features and characteristics of the L6910 and L6910A products, including operating voltage range, gate current capability, adjustable output voltage, non-inverting input, voltage reference, PWM control, load transient response, duty cycle, power good output, overvoltage protection, hiccup overcurrent protection, adjustable internal oscillator frequency, soft start and inhibit. It is applicable for supply to memories and terminations, computer add-on cards, low voltage distributed DC-DC, and mag-amp replacement applications.

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The L6902D is a complete and simple step down switching regulator with adjustable current limit. Based on a voltage mode structure it integrates a current error amplifier to have a constant voltage and constant current control. By means of an on board current sense resistor and the availability of the current sense pins (both compatible to Vcc and for Cs- compatible with GND too) a current limit programming is very simple and accurate (±5%). Moreover constant current control can be used to charge NiMH and NiCd batteries. The device can be used as a standard DC/DC converter with adjustable current limit (set by using the external sense resistor). The internal robust P-Channel DMOS transistor with a typical of 250mΩ assures high efficiency and a minimum dropout even at high output current level. The internal limiting cur

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The L6599 high-voltage resonant controller features 50% duty cycle, variable frequency control of resonant half-bridge, high-accuracy oscillator, up to 500kHz operating frequency, two-level OCP: frequency-shift and latched shutdown, interface with PFC controller, latched disable input, burst-mode operation at light load, input for power-ON/OFF sequencing or brownout protection, non-linear soft-start for monotonic output voltage rise, 600V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity, -300/800mA high-side and low-side gate drivers with UVLO pull-down, DIP-16, SO-16N packages

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The product is the L6598 power controller from STMicroelectronics. It supports high voltage power supply, with a driving capacity of 250mA source and 450mA sink. It has soft start, frequency shifting, timing control and other functions.

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The L6598 is a high voltage resonant controller manufactured with BCD OFF LINE technology, capable of ensuring voltage ratings up to 600V. It is perfectly suited for AC/DC Adapters and wherever a Resonant Topology can be beneficial. The device is intended to drive two Power MOS, in the classical Half Bridge Topology. A dedicated Timing Section allows the designer to set Soft Start Time, Soft Start and Minimum Frequency. An Error Amplifier, together with the two Enable inputs, are made available. In addition, the integrated Bootstrap Diode and the Zener Clamping on low voltage supply, reduces to a minimum the external parts needed in the applications.

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The L6590 is a monolithic switching regulator designed in BCD OFF-LINE technology, able to operate with wide range input voltage and to deliver up to 15W output power. The internal power switch is a lateral power MOSFET with a typical RDS(on) of 13Ω and a V(BR)DSS of 700V minimum. The device can work with secondary feedback and a 2.5V±2% internal reference, in addition to a high gain error amplifier, makes possible also the implementation of other types of converters.

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The L6574 is a high voltage driver chip for lamp ballasts, with features such as high voltage, immunity to high-speed voltage changes, and strong driving capability.

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L6571A/B is a high voltage half bridge driver from STMicroelectronics. It can drive N-channel power MOSFETs and IGBTs. The oscillator is built-in and the frequency can be programmed using external resistor and capacitor. The internal logic assures a minimum dead time to avoid cross-conduction of the power devices.

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L6569 is a high voltage half bridge driver with built-in oscillator from STMicroelectronics, with a maximum operating voltage of 600V, internal zener clamp between VS and VS, low start-up current of 150µA, programmable oscillator frequency, dead time of 1.25µs, dV/dt immunity up to ±50V/ns, ESD protection.

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The L6567 is a monolithic high voltage integrated circuit designed by STMicroelectronics to drive CFL and small TL lamps with a minimum number of components. It provides all the necessary functions for proper preheating, ignition and steady state operation of the lamp, such as variable frequency oscillator, settable preheating and ignition time, capacitive mode protection, and lamp power independent from mains voltage variation. In addition to the control functions, the IC provides the level shift and drive function for two external power MOS FETs in a half-bridge topology.

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The L6565 is a current-mode primary controller IC, specifically designed to build offline Quasi-resonant ZVS (Zero Voltage Switching at switch turn-on) fly-back converters. It features quasi-resonant operation, line voltage feedforward, pulse-by-pulse and hiccup-mode overcurrent protection, ultra-low start-up and quiescent current, disable function, and 1% precision internal reference voltage.

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This document describes the features and characteristics of the L6562 PFC controller, including the use of BCD technology, transition-mode control of PFC pre-regulators, proprietary multiplier design for minimum THD of AC input current, very precise adjustable output overvoltage protection, ultra-low startup current and quiescent current, extended IC supply voltage range, on-chip filter on current sense, disable function, 1% internal reference voltage, -600/+800mA totem pole gate driver with UVLO pull-down and voltage clamp, and DIP-8/SO-8 packages. This product is suitable for PFC pre-regulators in IEC61000-3-2 compliant SMPS (TV, desktop PC, monitor) up to 300W, high-end AC-DC adapter/charger, and entry level server & web server applications.

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L6561 is the improved version of the L6560 standard Power Factor Corrector. Fully compatible with the standard version, it has a superior performant multiplier making the device capable of working in wide input voltage range applications (from 85V to 265V) with an excellent THD. Furthermore the start up current has been reduced at few tens of µA and a disable function has been implemented on the ZCD pin, guaranteeing lower current consumption in stand by mode. Realised in mixed BCD technology,the chip gives the following benefits: micro power start up current, 1% precision internal reference voltage (Tj = 25°C), Soft Output Over Voltage Protection, no need for external low pass filter on the current sense, very low operating quiescent current minimises power dissipation. The totem pole output stage is capable of driving a Power MOS or IGBT with source and sink currents of +/- 400mA. The device is operating in transition mode and it is optimised for Electronic Lamp Ballast application, AC-DC adaptors and SMPS.

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The L6560/A is a monolithic integrated circuit designed as a controller and driver of a discrete power MOS transistor for the implementation of active power factor correction, for sinusoidal line current consumption. The chip is realized in mixed BCD technology, and integrates: an undervoltage lockout with micropower start-up and hysteresis, an internal temperature compensated precise band gap reference, a stable error amplifier, one quadrant multiplier, current sense comparator, an output overvoltage protection circuit, and a totem-pole output stage able to drive a POWER MOS or IGBT devices with source and sink current of 400mA. The chip works in transition mode and is particularly intended for lamp ballast applications and for low power SMPS.

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The L4931 series is a very low dropout regulator with very low quiescent current and logic-controlled electronic shutdown function. It is suitable for low noise, low power, and battery-powered systems.

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The L4931 series is a type of very low dropout voltage regulator with features such as very low dropout voltage, quiescent current, and output current up to 250mA. It is suitable for low noise, low power, and battery-powered systems.

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L4925 is a monolithic integrated 5V voltage regulator with a very low dropout output and additional functions such as power-on reset and programmable reset delay time. It is designed for supplying microcomputer controlled systems especially in automotive applications. This product features very low quiescent current, high precision output voltage, high output current capability, and thermal shutdown and short circuit protections.

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