Texas Instruments' TPS62933 is a highly-integrated synchronous buck converter that offers high efficiency and ease of use. With a wide input voltage range of 3.8 V to 30 V, continuous output current of up to 3 A, and an output voltage range of 0.8 V to 22 V, the TPS62933 is suitable for a variety of applications, especially in building automation.
The fixed-frequency peak-current-control mode of the TPS62933 ensures fast transient response and good line and load regulation. The optimized internal loop compensation eliminates the need for external compensation components over a wide range of output voltage and operating frequency. Pulse frequency modulation (PFM) mode maximizes light-load efficiency, while the ULQ (ultra-low quiescent) feature is extremely beneficial for long battery time in low-power operation.
The TPS62933 allows the user to optimize the system efficiency, solution size, and bandwidth by configuring the switching frequency in the range of 200 kHz to 2.2 MHz via the RT pin. The soft-start time can be adjusted by the external capacitor at the SS pin, minimizing inrush current when driving large capacitive loads. The device also has a frequency spread-spectrum feature, which helps to lower EMI noise.
The TPS62933 provides complete protections including OTP, OVP, UVLO, cycle-by-cycle OC limit, and UVP with hiccup mode. This device is packaged in a small SOT583 (1.6 mm x 2.1 mm) package with 0.5 mm pin pitch and has an optimized pinout for easy PCB layout and good EMI performance. With its features and protections, the TPS62933 is an ideal solution for building automation applications.
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
Continuous output current: 3 A
0.8 V ±1% reference voltage (+25°C)
Operating junction temperature range: -40°C to +150°C
Integrated MOSFETs: 76 mΩ and 32 mΩ
Ultra-low quiescent current: 12 μA (typ.)
Low shutdown current: 2 μA (typ.)
Duty-cycle operation: 98% (max.)
Precision EN threshold
Ease-of-use and small solution size:
Peak-current-control mode with internal compensation
PFM enables high light-load efficiency
Adjustable soft-start time
Selectable frequency range: 200 kHz to 2.2 MHz
EMI friendly with frequency spread-spectrum
Supports start-up with a pre-biased output
Cycle-by-cycle OC limit for high-side and low-side MOSFETs
Non-latched protections: OTP, OCP, OVP, UVP, and UVLO
Package: 1.6 mm x 2.1 mm SOT58
Building automation, appliances, and industrial PCs
Multifunction printers and enterprise projectors
Portable electronics and connected peripherals
Smart speakers and monitors
Distributed power systems with 5 V, 12 V, 19 V, and 24 V input
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