TPS51604_15 Datasheet, PDF (1/28 Pages) Texas Instruments – TPS51604 Synchronous Buck FET Driver for High-Frequency CPU Core Power

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TPS51604
SLUSBA6B – DECEMBER 2012 – REVISED OCTOBER 2015
TPS51604 Synchronous Buck FET Driver for High-Frequency CPU Core Power
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 (V_IN): 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 V_CORE 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS51604
WSON (8)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
R1
V_IN
C3
TPS51604
1 BST
Q1
DRVH 8
PWM
2 PWM
SW 7
SKIP
V_DD
3 SKIP
4 VDD
C4
GND 6
Q2
DRVL 5
L1
C1
C2
UDG-12234
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.