TPS6293x 电感-输出电容
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2022-05-23
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TPS6293x 3.8-V to 30-V, 3-A/2-A Synchronous Buck Converter in a SOT583 Package
1 Features
• Configured for a wide range of applications
– Input voltage range: 3.8 V to 30 V
– Output voltage range: 0.8 V to 22 V
– Ultra-low quiescent current: 12 μA (typical)
– Integrated 76-mΩ and 32-mΩ MOSFETs
– 0.8V ± 1% reference voltage
– Maximum 98% duty cycle operation
– Precision EN threshold
– 3-A (TPS62933) and 2-A (TPS62932)
continuous output current
– Operating junction temperature: –40°C to
150°C
• Ease of use and small solution size
– Peak current control mode with internal
compensation
– Pulse frequency modulation (PFM) for high
light-load efficiency
– Adjustable soft-start time
– 200-kHz to 2.2-MHz selectable frequency
– EMI friendly with frequency spread spectrum
– Support start-up with pre-biased output
– Cycle-by-cycle OC limit for both high-side and
low-side MOSFETs
– Non-latched protections for OTP, OCP, OVP,
UVP, and UVLO
– 1.6-mm × 2.1-mm SOT583
• Create a custom design with the TPS62933 using
the WEBENCH
®
Power Designer
• Create a custom design with the TPS62932 using
the WEBENCH
®
Power Designer
2 Applications
• Building automation, appliances, industrial PC
• Multifunction printers, enterprise projectors
• Portable electronics, connected peripherals
• Smart speakers, monitors
• Distributed power systems with 5-V, 12-V, 19-V,
24-V input
3 Description
The TPS62933/TPS62932 is a high-efficiency, easy-
to-use synchronous buck converter with a wide input
voltage range of 3.8 V to 30 V, and supports up to
3-A/2-A continuous output current and 0.8-V to 22-V
output voltage.
The device employs fixed-frequency peak current
control mode for fast transient response and good
line and load regulation. The optimized internal
loop compensation eliminates external compensation
components. Pulse frequency modulation (PFM)
mode maximizes the light load efficiency. The ULQ
(ultra-low quiescent) feature is extremely beneficial
for long battery lifetime in low-power operation. The
switching frequency can be set by the configuration
of the RT pin in the range of 200 kHz to 2.2 MHz,
which allows the user to optimize system efficiency,
solution size, and bandwidth. The soft-start time can
be adjusted by the external capacitor at the SS pin,
which can minimize the inrush current when driving
large capacitive load. This device also has frequency
spread spectrum feature, which helps with lowering
down EMI noise.
This device is in a small SOT583 (1.6-mm × 2.1-mm)
package with 0.5-mm pin pitch, and has an optimized
pinout for easy PCB layout and promotes good EMI
performance.
Device Information
PART NUMBER PACKAGE
(1)
BODY SIZE (NOM)
TPS62933
SOT583 (8) 1.60 mm × 2.10 mm
TPS62932
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
L
C
BST
C
OUT
R
FBT
R
FBB
VIN
GND
EN
SS
BST
SW
FB
RT
C
IN
V
IN
V
OUT
V
EN
Simplified Schematic
I-Load (A)
Efficiency (%)
0.001 0.005 0.02 0.05 0.1 0.2 0.5 1 2 3
0
20
40
60
80
100
VOUT=3.3V
VOUT=5V
VOUT=12V
TPS62933 Efficiency, V
IN
= 24 V, f
SW
= 500 kHz
TPS62933, TPS62932
SLUSEA4B – JUNE 2021 – REVISED FEBRUARY 2022
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.
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