uP1961S中文资料Dual Channel MOSFET Driver with Phase Extension数据手册uPI(UBIQ)规格书

描述 Description

The uP1961S is a high performance gate driver IC withPhase Extension Module (PEM). The PEM interleaves thesingle PWM input and drives dual-phase synchronousbuck power stages. The PEM also extracts and passesthe dual-phase current signals to the controller. Whenoperating with uPI’s VR controllers with DCR currentbalance scheme, the uP1961S can double the phasenumber with perfect phase interleaving and channelcurrent balancing.

Each driver is capable of driving a 5000pF load with 30nstransition time. This device combined with uPI multiphasebuck PWM controller forms a complete core voltageregulator for advanced microprocessors.

The uP1961S features adaptive anti-shoot-throughprotection that prevents cross-conduction of the externalMOSFET while maintains minimum deadtime for optimizedefficiency.

All gate drivers are turned off by pulling low EN pin orhigh-impedance at PWM0 pin, preventing rapid outputcapacitor discharge during system shutdowns. Anotherfeature is supply input under voltage lockout. The uP1961Sis available in thermal enhanced WQFN3x3 - 16L package.

特性 Features

• Quad MOSFET Drivers for Dual-Phase Buck Converter with Single PWM Input.
• One PWM Signal Generates Both Drivers.
• Alternatively Pass DCR Current Signals of Both Phase to Controller for Current Balance.
• Enble/Disable Control for PEM Function.
• Tri-State PWM Input for Bridge Shutdown.
• Output Disable Control for Bridge Shutdown.
• Bootstrapped High-Side Drivers.
• Adaptive Anti-Shoot-Through Protection Circuit.
• Supply Input Under Voltage Lockout.
• Low Power Dissipation.
• WQFN3x3-16L Package.
• RoHS Compliant and Halogen Free.

应用 Application

• Core Voltage Supplies for Intel and AMD Mobile Microprocessors.
• High Frequency Low Profile DC/DC Converters.
• High Current Low Output Voltage DC/DC Converters.
• High Input Voltage DC/DC Converters.
• All-in-one Synchronous Buck Drivers.