1 Features

1• Reduced Dead-Time Drive Circuit for Optimized

CCM

• Automatic Zero Crossing Detection for Optimized

DCM Efficiency

• Multiple Low-Power Modes for Optimized Light-

Load Efficiency

• Optimized Signal Path Delays for High-Frequency

Operation

• Integrated BST Switch Drive Strength Optimized

for Ultrabook FETs

• Optimized for 5-V FET Drive

• Conversion Input Voltage Range (VIN): 4.5 to 28 V

• 2-mm × 2-mm, 8-Pin, WSON Thermal Pad

Package

2 Applications

• Tablets Using High-Frequency CPUs With the

Following Power Input:

– Adapter

– Battery

– NVDC

– 5-V or 12-V Rails

3 Description

The TPS51604 drivers are optimized for high-

frequency CPU VCORE applications. Advanced

features such as reduced dead-time drive and auto

zero crossing are used to optimize efficiency over the

entire load range.

The SKIP pin provides the option of CCM operation

to support controlled management of the output

voltage. In addition, the TPS51604 supports two low-

power modes. With the PWM input in tri-state,

quiescent current is reduced to 130 μA, with

immediate response. When SKIP is held at tri-state,

the current is reduced to 8 μA (typically 20 μs is

required to resume switching). Paired with the

appropriate TI controller, the drivers deliver an

exceptionally high performance power supply system.

The TPS51604 device is packaged in a space saving,

thermally-enhanced 8-pin, 2-mm x 2-mm WSON

package and operates from –40°C to 105°C.