TPS55332-Q1_15 Datasheet, PDF (1/36 Pages) Texas Instruments – TPS55332-Q1 2.2-MHz, 60-V Output Step Up DC/DC Converter

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS55332-Q1
SLVS939B – JUNE 2009 – REVISED DECEMBER 2014
TPS55332-Q1 2.2-MHz, 60-V Output Step Up DC/DC Converter
1 Features
•1 Withstands Transients up to 60 V, Boost Input
Operating Range of 1.5 V to 40 V (VIN)
• Peak Internal Switch Current: 5.7 A (typ)
• 2.5 V ± 1.5% Feedback Voltage Reference
• 80 kHz to 2.2 MHz Switching Frequency
• High Voltage Tolerant Enable Input for On/Off
State
• Soft Start on Enable Cycle
• Slew Rate Control on Internal Power Switch
• External Clock Input for Synchronization
• External Compensation for Wide Bandwidth Error
Amplifier
• Programmable Power on Reset Delay
• Reset Function Filter Time for Fast Negative
Transients
• Programmable Undervoltage Output Monitoring,
Issuance of Reset if Output Falls Below Set
Threshold
• Thermal Shutdown to Protect Device During
Excessive Power Dissipation
• ILIM Threshold Protection (Current Limit)
• Operating Junction Temperature Range: –40°C to
150°C
• Thermally Enhanced 20-Pin HTSSOP
PowerPAD™ Package
2 Applications
• Lighting
• Battery Powered Applications
• Qualified for Automotive Applications
3 Description
The TPS55332 is a monolithic high-voltage switching
regulator with integrated 3-A, 60-V power MOSFET.
The device can be configured as a switch mode step-
up power supply with voltage supervisor. Once the
internal circuits have stabilized with a minimum input
supply of 3.6 V, the system can then have an input
voltage range from 1.5 V to 40 V, to maintain a fixed
boost output voltage. For optimum performance,
VIN/Vout ratios should be set such that the minimum
required duty cycle pulse > 150 ns. The supervisor
circuit monitors the regulated output and indicates
when this output voltage has fallen below the set
value. The TPS55332 has a switching frequency
range from 80 kHz to 2.2 MHz, allowing the use of
low profile inductors and low value input and output
capacitors. The external loop compensation gives the
user the flexibility to optimize the converter response
for the appropriate operating conditions. Using the
enable pin (EN), the shutdown supply current is
reduced to 1 μA. The device has built-in protection
features such soft start on enable cycle, pulse-by-
pulse current limit, and thermal sensing and
shutdown due to excessive power dissipation.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS55332
HTSSOP (20)
6.50 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Vsupply
VIN
SW
EN
RT
C_dly
GND
SYNC
RST
GND
GND
SS
V_Reg
VSENSE
TPS55332
COMP
RST_TH
BOOT
R_slew
PGND
Vout
S0401-01
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.