Flyback, Buck for Automotive (4.5V @ 0.05A)

(ACTIVE) PMP1941

Description & Features

Technical Documents

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Description

A triple-output non-isolated flyback converter provides a regulated low voltage and two high voltage rails. A buck converter with an input transient voltage-clamping circuit produces a 5V rail. The addition of a dithering circuit creates spread-spectrum operation on the switching frequency to lower EMI, making this circuit suitable for automotive use.

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Bill of Materials (BOM)

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Parametrics
 PMP1941.1
(Output Voltage 1)
PMP1941.2
(Output Voltage 2)
PMP1941.3
(Output Voltage 3)
PMP1941.4
(Output Voltage 4)
PMP1941.5
(Output Voltage 5)
Vin (Min) (V)88888
Vin (Max) (V)3535353535
Vout (Nom) (V)82523.754.5
Iout (Max) (A).03.04.5.5.05
Output Power (W)2.462.081.852.5.225
Isolated/Non-IsolatedNon-IsolatedNon-IsolatedNon-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDCDCDCDC
TopologyFlyback- Non Sync
Flyback- CCM
Flyback- Non Sync
Flyback- CCM
Flyback- Non Sync
Flyback- CCM
Buck- Non SyncLinear Regulator

TI Devices (8)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM158  Dual General-Purpose Operational Amplifier  Operational amplifiers (op amps)  Not Available View Design Kits & Evaluation Modules
LM2904  Dual Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS3803  Low Power Voltage Detector  Power management  Sample & Buy Not Available
TPS3803-EP  Single-Channel Voltage Detector  Power management  Sample & Buy Not Available
TPS3803-Q1  Automotive Single-Channel Voltage Detectors  Power management  Sample & Buy Not Available
TPS40200  Wide Input Non-Synchronous Buck DC/DC Controller  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS715  50 mA, 24 V, 3.2-μA Iq, Low-Dropout Linear Regulator in SC70 Package  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC28C41  BiCMOS Low-Power Current Mode PWM Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM158 Download -
Download
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LM2904 Download Download
Download Download
Download Download
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TPS3803 Download Download
TPS3803-EP Download Download
TPS3803-Q1 Download Download
TPS40200 Download Download
Download Download
TPS715 Download Download
UCC28C41 Download Download
Download Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 3079 06 Jan 2011 10
Design files (2)
Title Abstract Type Size (KB) Date Views
PDF 24 06 Jan 2011 6
PDF 134 06 Jan 2011 16

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