10-A automotive pre-regulator reference design with extended input voltage range for trucks
PMP30600-TL
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Key Document

Description

This reference design is a 50-W synchronous buck converter to supply automotive loads. The IC is LM5146-Q1 in fixed frequency operation at 250 kHz to ensure low noise operation. This IC (LM5146-Q1) is designed for automotive with the ability to handle load dump for truck applications.  A resistor-capacitor (RC) snubber attenuates noise in the RF band to reduce radiated emissions. To reduce system EMI, the design is prepared to either synchronize other converters (output) or be externally synchronized (input). 

Features
  • Power stage withstands surge voltages up to 75 Vpk
  • Efficiency higher than 93% over a output current range of 3 A to 10 A  (at 14 V input voltage)
  • Tight load regulation results in a low deviation (3 mV) of the output voltage over the whole range of the input voltage
  • Input filter for minimizing conducted emissions is included

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Parametrics
 PMP30600-TL.1
(Output Voltage 1)
Vin (Min) (V)10
Vin (Max) (V)36
Vout (Nom) (V)5
Iout (Max) (A)10
Output Power (W)50
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5146-Q1  100-V synchronous buck DC/DC controller with wide duty cycle range  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5146-Q1 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 2550 20 Sep 2019
Design files (6)
Title Type Size (KB) Date
ZIP 559 20 Sep 2019
PDF 105 20 Sep 2019
PDF 136 20 Sep 2019
PDF 113 20 Sep 2019
ZIP 62 13 Aug 2019
PDF 862 13 Aug 2019
Related Tools & Software

Reference Designs (3)

Name Part Number Tool Type
10-A automotive pre-regulator reference design  PMP30600-AL  Reference design 
20-A automotive pre-regulator reference design  PMP30600-AH  Reference design 
20-A automotive pre-regulator reference design with extended input voltage range for trucks  PMP30600-TH  Reference design 

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