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Programmable output Constant Voltage - Constant Current (CVCC) Quasi-Resonant Flyback charger
PMP8955
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Description

This industrial charger reference design uses the LM5023 Quasi-Resonant Flyback controller to implement a 120VAC input design with CVCC output configured by microcontroller PWM control from 10 to 22.5V and output current from 200mA to 2A.

Features

Ouput voltage and current independently configured by PWM input
>83% efficency above 20W @21.2V output
5V output provided for secondary side micro-controller

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (4)

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
LM317L	3-pin or 8-pin 100-mA adjustable positive regulator	Power management	Sample & Buy	Not Available
LM358	Dual standard operational amplifier	Operational amplifiers (op amps)	Sample & Buy	View Design Kits & Evaluation Modules
LM5023	AC-DC Quasi-Resonant Current Mode PWM Controller	Offline & isolated DC/DC controllers & converters	Sample & Buy	View Design Kits & Evaluation Modules
TL431	Adjustable precision shunt regulator	Voltage references	Sample & Buy	Not Available

CAD/CAE symbols

Part #	Package \| Pins	CAD File (.bxl)	STEP Model (.stp)
LM317L	TO-92 (LP) \| 3	Download	Download
	SOT-89 (PK) \| 3	Download	-
	SOIC (D) \| 8	Download	Download
	TSSOP (PW) \| 8	Download	Download
LM358	SOIC (D) \| 8	Download	Download
	VSSOP (DGK) \| 8		Download
	PDIP (P) \| 8	Download	Download
	SOP (PS) \| 8	Download	-
	TSSOP (PW) \| 8	Download	Download
LM5023	VSSOP (DGK) \| 8	Download	Download
TL431	SOT-23 (DBZ) \| 3	Download	Download
	TO-92 (LP) \| 3	Download	Download
	SOT-89 (PK) \| 3	Download	-
	SOT-23 (DBV) \| 5	Download	Download
	SOT-SC70 (DCK) \| 6	Download	Download
	SOIC (D) \| 8	Download	Download
	PDIP (P) \| 8	Download	Download
	SOP (PS) \| 8	Download	-
	TSSOP (PW) \| 8	Download	Download

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Technical Documents

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User guides (1)

Title	Type	Size (KB)	Date
PMP8955 Test Results	PDF	398	24 Mar 2015

Design files (4)

Title	Type	Size (KB)	Date
PMP8955 Gerber	ZIP	194	24 Mar 2015
PMP8955 Assembly Drawing	PDF	139	24 Mar 2015
PMP8955 BOM	PDF	124	24 Mar 2015
PMP8955 Schematic	PDF	207	24 Mar 2015

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