TPS51604-Q1_15 Datasheet, PDF (1/23 Pages) Texas Instruments – TPS51604-Q1 Synchronous Buck FET Driver for High-FrequencyCPU Core Power in Automotive Applications

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TPS51604-Q1
SLUSBT2A – JANUARY 2014 – REVISED AUGUST 2014
TPS51604-Q1 Synchronous Buck FET Driver for High-Frequency
CPU Core Power in Automotive Applications
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
– Device Human Body Model ESD Classification
Level H2
– Device Charged Device Model ESD
Classification Level C3B
• 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 Power-Pad Package
2 Applications
• Automotive Rear Seat Entertainment (RSE)
Tablets Using High-Frequency CPUs With the
Following Power Input:
– Adapter
– Battery
– NVDC
– 5-V or 12-V Rails
3 Description
The TPS51604-Q1 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 immediate CCM operation to
support controlled management of the output voltage.
In addition, the TPS51604-Q1 supports two low-
power modes. With the PWM input in 3-state,
quiescent current is reduced to 130 µA, with
immediate response. When SKIP is held at 3-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-Q1 device is packaged in a space
saving, thermally-enhanced 8-pin, 2-mm x 2-mm
WSON package and operates from –40°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS51604-Q1
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-Q1
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.