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Texas Instruments LM5161 | Demoboard TIDM646
LM5161 Wide Input 100-V, 1-A Synchronous Buck/Fly-Buck™ Converter
Overview
| Topology | Buck-Boost Converter |
| Input voltage | -36 - -62 V |
| Output 1 | 56 V / 18 A |
| IC revision | 1 |
Description
This reference design uses UCD3138064A as a digital controller to control two-phase two-rail inverting buck-boost. This non-isolated converter is used for wireless radio power. The input voltage is from -35 V to -60 V. There are two outputs. The default output voltage of rail 1 is 32 V and max current is 8.5 A; the default output voltage of rail 2 is 48 V and max current is 5.5 A. The output voltage is adjustable from 30 V to 56 V. With some component changes and firmware changes, the hardware can be used for current mode control or transition mode control to increase power and improve load transient. Test results of three controls are provided respectively.
Features
- Inverting buck boost for -48-V to 48-V system
- Transient response with less than +/- 3% overshoot/undershoot voltage
Typical applications
- IGBT Gate Drive Bias Supply
- E-Meter Power Line Communication
- Industrial Programmable Logic Controller
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(nH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Wire Type | LR(nH) | IR(A) | RDC(mΩ) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCM SMT High Current Flat Wire Inductor, 400 nH, 54.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCM SMT High Current Flat Wire Inductor | Inductance400 nH | Performance Rated Current54.3 A | Saturation Current @ 10%23.8 A | Saturation Current @ 30%28.3 A | – | Self Resonant Frequency25 MHz | – | Rated Inductance345 nH | Rated Current25 A | DC Resistance0.37 mΩ | MaterialMnZn | ||||
 | WE-HCF SMT High Current Inductor, 22000 nH, 34.95 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance22000 nH | Performance Rated Current34.95 A | Saturation Current @ 10%15.5 A | Saturation Current @ 30%18 A | DC Resistance2.64 mΩ | Self Resonant Frequency9 MHz | Wire TypeFlat | Rated Inductance5000 nH | Rated Current35 A | DC Resistance2.4 mΩ | MaterialMnZn |