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Overview
| Topology | Boost Converter |
| Input voltage | 5-12 V |
| Switching frequency | 100-1200 kHz |
| Output 1 | 24 V / 0.8 A |
| IC revision | C |
Description
The TPS55340 is a monolithic non-synchronous switching regulator with integrated 5-A, 40-V power switch. It can be configured in several standardswitching-regulator topologies, including boost, SEPIC and isolated flyback. The device has a wide input voltage range to support applications with input voltage from multi-cell batteries or regulated 3.3-V, 5- V, 12-V, and 24-V power rails.The TPS55340 regulates the output voltage with current mode PWM (pulse width modulation) control, and has an internal oscillator. The switchingfrequency of PWM is set by either an external resistor or by synchronizing to an external clock signal. The user can program the switching frequency from 100 kHz to 1.2 MHz.The device features a programmable soft-start function to limit inrush current during start-up and has other built-in protection features including cycle-bycycle over current limit and thermal shutdown. The TPS55340 is available in a small 3mm x 3mm 16-pin QFN as well as 14-pin HTSSOP packages with PowerPad™ for enhanced thermal performance.The 5-A, 40-V TPS55340 Boost Converter in the HTSSOP-14 package is pin-to-pin compatible with the 3-A, 40-V TPS61175 and it extends the maximuminput voltage from 18 V to 32 V.
Features
- Internal 5-A, 40-V Low-Side MOSFET Switch
- 2.9-V to 32-V Input Voltage Range
- ±0.7% Reference Voltage 0.5mA Operating Quiescent Current
- 2.7µA Shutdown Supply Current
- Fixed Frequency Current Mode PWM Control
- Frequency Adjustable from 100kHz to 1.2MHz
- Synchronization Capability to External Clock
- Adjustable Soft-Start Time
- Pulse-Skipping for Higher Efficiency at Light Loads
- Cycle-by-Cycle Current Limit, Thermal Shutdown, and UVLO Protection
- QFN-16 (3mmx3mm) and HTSSOP-14 Packages with PowerPad™
- Wide -40°C to 150°C Operating TJ Range
Typical applications
- 3.3-V, 5-V, 12-V, 24-V Power Conversion
- Boost, SEPIC, and Flyback Topologies
- ADSL Modems
- Thunderbolt Port, Power Docking for Tablets and Portable PCs
- Industrial Power Systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | Mount | L1(µH) | L2(µH) | IR(A) | IR 2(A) | ISAT(A) | RDC1 typ(Ω) | RDC2 typ(Ω) | RDC1 max(Ω) | RDC2 max(Ω) | fres(MHz) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LHMI SMT Power Inductor, 10 µH, 7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance10 µH | Performance Rated Current7 A | Saturation Current @ 10%7.9 A | Saturation Current @ 30%16.8 A | DC Resistance30 mΩ | MountSMT | – | – | – | – | – | – | – | – | – | Self Resonant Frequency12 MHz | – | ||||
 | WE-DD SMT Shielded Coupled Inductor, 10 µH, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-DD SMT Shielded Coupled Inductor | Inductance10 µH | – | – | – | DC Resistance44 mΩ | – | Inductance 110 µH | Inductance 210 µH | Rated Current2.7 A | Rated Current 22.7 A | Saturation Current7 A | DC Resistance 10.038 Ω | DC Resistance 20.038 Ω | DC Resistance 10.044 Ω | DC Resistance 20.044 Ω | Self Resonant Frequency18 MHz | TypeCrossed |