IC manufacturers Texas Instruments

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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
  • Adapters and Chargers for Phones and Tablets
  • Industrial and Medical SMPS

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesPins (Value)
(pcs)
ApplicationPCB/Cable/PanelModularityTypeWire SectionCSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
PackagingIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples
691101710002SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-TBL Series 101 - 5.00 mm Horizontal Entry Modular 2 Wire Protector PCB Yes Horizontal 26 to 14 (AWG) 0.5 to 2.5 (mm²) 5 Box 16 10 12.6 THT
744822120SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-CMB Common Mode Power Line Choke 4 -40 °C up to +125 °C 0.5 20 540 250 1500 MnZn 17.5 13 22 THT
890324025017SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-FTX2 Film Capacitors Across the mains100 nF X2 300 0.130 GΩ -40 °C up to +105 °C 15 Bulk 275 18 6 12 Boxed THT
7447034SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WE-FI Leaded Toroidal Line Choke 2.6 0.043 60 13.5 7.5 THT
Order Code Data­sheet Simu­lation
691101710002SPEC
744822120SPEC
890324025017SPEC
7447034SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesPins (Value)
(pcs)
ApplicationPCB/Cable/PanelModularityTypeWire SectionCSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
PackagingIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples