Not Recommended for New Designs
TPS65230, TPS65231
www. ti. com. . SLVSA10A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009
POWER MANAGEMENT IC FOR DIGITAL SET TOP BOXES
FEATURES
1
• Wide Input Supply Voltage Range (10. 8 V - 22 V)
• One Adjustable PWM Buck Controller – 10. 8-V - 22-V Input Voltage Range
– 3. 3-V - 6. 1-V Output Voltage Range
– 500kHz switching frequency
– Type III Compensation
– Programmable Current Limit • Two Adjustable Step-Down Converter with
Integrated Switching FETs:
– 4. 75-V - 5. 5-V Input
– 0. 9-V-3. 3-V Output Voltage Range
– 3-A Output Current
– 1-MHz Switching Frequency
– Voltage Scaling Option
– Type III Compensation • Two 100-mΩ, 0. 5-A (TPS65230) 1-A (TPS65231)
USB Switches with Over Current Protection and Open-Drain Fault Pin • Early Supply Failure Flag (Open Drain Output) is Set when Input Voltage Drops Below 9. 3 V • Early Temperature Warning Flag (Open Drain Output) is Set if Temperature Approaches Shut-Down Threshold
• Supply Voltage Supervisor Circuit with Two Monitor Inputs and Open Drain Output
• Parallel I/O or I2C Control with User Selectable Address
• Advanced Fault Detection and Output Voltage Adjustment Options in I2C Mode
• Pull-Up Current Sources on Buck Enable Pins for Accurate Start-Up Timing Control with Preset Default
• Over Current Protection on All Rails • Thermal Shutdown to Protect Device During
Excessive Power Dissipation
• Thermally Enhanced Package for Efficient Heat Management (48-pin HTSSOP)
APPLICATIONS
• Digital Set Top Boxes • xDSL & Cable Modems • DVD Players • Home Gateway and Access Point Networks • Wireless Routers
DESCRIPTION/ORDERING INFORMATION
The TPS652x provides one PWM buck controller, two adjustable, synchronous buck regulators, two independent USB power switches and a supply voltage supervisor (SVS) to provide main power functions for satellite set top boxes, xDSL and cable mo...
TPS65230 PDF File
