Datasheet
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Description
1 Description
The TPS53310EVM-755 uses a regulated 3.3-V or 5-V bus to produce outputs at up to 3 A of load
current. The output is 1.5-V master and 1.2-V slave. The TPS53310EVM-755 is designed to demonstrate
the TPS53310 in a typical low-voltage application while providing test points to evaluate the performance
of the TPS53310.
1.1 Typical Applications
• Servers, notebook/netbook computers
• Multifunction printers (MFP)
• Embedded personal computers, POS terminals
• Switches, routers
• Low-voltage, point-of-load converters
• Any Energy Star/80Plus low-voltage rail
1.2 Features
The TPS53310EVM-755 features:
• 1.5-V master and 1.2-V slave outputs
• 3-Adc steady-state current
• 1.1-MHz switching frequency
• Hiccup overcurrent protection
• J1: selectable 3.3-V or 5-V input voltage
• J2, J7: selectable FCCM, DE, HEF mode
• J5: selectable master and slave interleaved operation
• J4, J9 for master and slave enable function
• Loop gain measurement
• Convenient test points for probing critical waveforms
• Four-layer PCB with 2 oz of copper on the outside layers
2 Electrical Performance Specifications
Table 1. TPS53310EVM-755 Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
INPUT CHARACTERISTICS
VIN input voltage range* Vin 2.9 3.3/5 6 V
Maximum input current Vin = 3.3 V, 1.5 V/ 3 A, 1.2 V/3 A, FCCM 2.82 A
No-load input current Vin = 3.3 V, 1.5 V/0 A, 1.2 V/0 A, FCCM 40 mA
OUTPUT CHARACTERISTICS
Master output voltage Vo_MST 1.485 1.5 1.515 V
Slave output voltage Vo_SLV 1.188 1.2 1.212 V
Output voltage regulation Line regulation 0.1 %
Load regulation 1.0 %
Output voltage ripple Vin = 3.3 V, 1.5 V/0 A-3 A, 1.2 V/0 A-3 A 20 mVpp
Output load current 0 3 A
Output over current 4.5 A
SYSTEMS CHARACTERISTICS
Switching frequency Fixed 1.1 MHz
1.5-V, full-load efficiency Vin = 3.3 V, 1.5 V/3 A 88.82 %
1.5-V, full-load efficiency Vin = 5 V, 1.5 V/3 A 89.50 %
3
SLUU826–January 2012 Using the TPS53310EVM-755, A 3-A Eco-mode™ Integrated Switcher With
Master-Slave
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