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Texas Instruments LMR33630 | Demoboard TIDA-010009
Compact, efficient, 24-V input auxiliary power supply reference design for servo drives
Overview
| Topology | Buck Converter |
| Input voltage | 3.8-36 V |
| Output 1 | 5 V / 3 A |
| IC revision | E2 |
Description
This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output overload and short circuit conditions.
Features
- Powered from an external protective extra-low voltage (PELV) power supply of 24 V ±20%
- Industrial eFuse at supply input providing programmable UV/OV, reverse polarity protection, output overload and SC protection
- Synchronous buck DC/DC converter with integrated switch optimized for >90% efficiency and compact size
- PSR flyback with integarted switch to generate isolated voltage rails for communication and digital I/Os
- Programmable voltage output to support multiple encoder types
- Output voltage rails: 24 VISO, 5 VISO, ±12 V, 5 V, 3.3 V, 2.5 V, 1.2 V with load and line regulation of <±1%
Typical applications
- Servo drive control module
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 1 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance1 µF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.1 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
 | WE-PDF SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PDF SMT Power Inductor | – | – | – | Size1064 | Operating Temperature -40 °C up to +150 °C | – | – | – | Length10.2 mm | Width10.2 mm | Height6.1 mm | – | – | Inductance11 µH | Rated Current6.9 A | Saturation Current5.3 A | DC Resistance15.8 mΩ | Self Resonant Frequency25 MHz | MountSMT |