2.2MHz Switching, Synchronous Split Supply Reference Design for 12V Battery with all Protections
PMP10651
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Key Document
Description
PMP10651 is a low noise, multi-output SMPS design where LM53603 is used in Inverting Buck-Boost Fly buck topology to generate positive and negative supply needed in multiple noise sensitive applications such as powering High Speed Video Amplifier, RF amplifier, Precision Low noise amplifier etc. The design accepts an input voltage of 7Vin to 15 Vin DC (from 12V Lead Acid Battery) and provides outputs of +12V@500mA, -12v@500mA, 5V @400mA and 3.3V@150mA. It features a small size and is an inexpensive and more efficient solution to using Flyback or Pushpull converters .
Features
- High Frequency Bipolar Supply design using inexpensive coupled inductor
- Weighted feedback for both the output to attain good regulation
- Positive output can be lower than , in between or higher than Vin range
- Low Vin Support for Single as well as Dual Li ion Battery support
- LMZ integrated module is used to generate 5V
- High PSRR LDOs are used for Bipolar outputs
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Schematic/Block Diagram
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Test Data
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TI Devices (10)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| LM53602 |
2A, 3.5V-to-36V, Wide-Vin, Synchronous 2.1MHz Step-Down Converter |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LM53602-Q1 |
3.5 to 36Vin, 2 Ampere Synchronous DC-DC Converter for Automotive Applications |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LM53603 |
3A, 3.5V-to-36V, Wide-Vin, Synchronous 2.1MHz Step-Down Converter |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LM53603-Q1 |
3.5 to 36Vin, 3 Ampere Synchronous DC-DC Converter for Automotive Applications |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LMZ21700 |
3V to 17V, 0.65A Step-Down DC/DC Power Module in 3.5mm × 3.5mm Package |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
| THS3001 |
420-MHz Current-Feedback Amplifier |
Operational amplifiers (op amps) |
Sample & Buy |
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| TLVH431A |
1% low-voltage wide-operating current adjustable precision shunt regulator |
Voltage references |
Sample & Buy |
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| TPS717 |
150-mA, high-PSRR, low-IQ, low-dropout voltage regulator with enable |
Power management |
Sample & Buy |
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| TPS7A33 |
1-A, high-PSRR, negative, adjustable low-dropout voltage regulator with enable |
Power management |
Sample & Buy |
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| TPS7A47 |
1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
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Technical documentation
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User guide (1)
| Title | Type | Size (KB) | Date |
| | PDF | 3588 |
10 Aug 2015
|
Design files (3)
| | ZIP | 235 |
10 Aug 2015
|
| | PDF | 25 |
10 Aug 2015
|
| | PDF | 203 |
10 Aug 2015
|
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