TI LM5088MHX-2/NOPB

降压降压4.5V ~ 75V

Overview

The LM5088MHX-1/NOPB high voltage non-synchronous buck controller features all the necessary functions to implement an efficient high voltage buck converter using a minimum number of external components. The LM5088MHX-1/NOPB can be configured to operate over an ultra-wide input voltage range of 4.5 V to 75 V. This easy to use controller includes a level shifted gate driver capable of controlling an external N-channel buck switch. The control method is based upon peak current mode control utilizing an emulated current ramp. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage/low output voltage applications. The LM5088MHX-1/NOPB switching frequency is programmable from 50 kHz to 1 MHz.

The LM5088 is available in two versions: The LM5088-1 provides a +/-5% frequency dithering function to reduce the conducted and radiated EMI, while the LM5088-2 provides a versatile restart timer for overload protection. Additional features include a low dropout bias regulator, tri-level enable input to control shutdown and standby modes, soft-start and oscillator synchronization capability. The device is available in a thermally enhanced HTSSOP-16 pin package.

Features

• Transistor Driver Outputs

• Switching Frequency: 50kHz~1MHz

• Enable, Frequency Control, Ramp, Soft Start

• PULSE WIDTH MODULATION

• Max Duty Cycle: 94 %

Applications

There are a lot of Texas Instruments LM5088MHX-2/NOPB DC to DC converter applications.

• Power supplies of electronic gadgets

• Remotely powered electric motors

• Sink circuits

• Textile machinery

• Planers

• Hydrogen power

• Precision electronic equipment

• Household control circuits

• Hydro power

• Low output voltage switching power supply circuits