IC manufacturers Texas Instruments

IC manufacturers (103)

Texas Instruments UCC28704DBVR-1 | Demoboard PMP21618

Universal input reference design for 12-V lead acid battery charger

Overview

TopologyFlyback Converter
Input voltage85-265 V
Switching frequency0.88-94 kHz
Output 114 V / 2.5 A
IC revisionA

Description

This reference design takes a Universal AC input (85 VAC - 265 VAC) and converts to a 17.5-V isolated output using a PSR flyback topology. It is then followed by a battery charger circuit, which outputs up to 15 V to a lead acid battery. This is a fast-charge design capable of delivering 12 V @ 2.5 A (30 W) to the battery.

Features

  • Universal input (85 VAC - 265 VAC), which can be used to power up the charger worldwide
  • Conducted EMI testing provided
  • Primary side regulated (PSR) flyback topology provides a cost-effective solution
  • Small form factor to fit any mechanical housing of typical battery chargers

Typical applications

  • Low Power AC to DC SMPS
  • USB Type-C AC Adapters for Consumer Electronics
  • Industrial and Medical SMPS
  • Adapters and Chargers for Phones and Tablets

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
PCB/Cable/Panel
Modularity
Type
Wire Section
C
Safety Class
dV/dt(V/µs)
DF @ 1 kHz(%)
RISO
Pitch(mm)
Packaging
IR(A)
L(mH)
RDC max.(mΩ)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
Samples
WR-TBL Series 101 - 5.00 mm Horizontal Entry Modular, 2, Wire Protector
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Pins
PCB/Cable/PanelPCB 
ModularityYes 
TypeHorizontal 
Wire Section 26 to 14 (AWG) 0.5 to 2.5 (mm²)
Pitch5 mm
PackagingBox 
Rated Current16 A
Length10 mm
Height12.6 mm
MountTHT 
WE-CMB Common Mode Power Line Choke, 4, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Pins
Rated Current0.5 A
Inductance20 mH
DC Resistance540 mΩ
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length17.5 mm
Width13 mm
Height22 mm
MountTHT 
WCAP-FTX2 Film Capacitors, –, Across the mains
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance100 nF
Safety ClassX2 
Rate of Voltage Rise300 V/µs
Dissipation Factor0.1 %
Insulation Resistance30 GΩ
Pitch15 mm
PackagingBulk 
Rated Voltage275 V (AC)
Length18 mm
Width6 mm
Height12 mm
MountBoxed THT 
WE-FI Leaded Toroidal Line Choke, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Rated Current2.6 A
Inductance0.043 mH
DC Resistance60 mΩ
Length13.5 mm
Width7.5 mm
MountTHT