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PTB48511AAS
65-W +/- 5-V, Dual Complementary-Output DC/DC Converter with OVP
+VIVO1COM
PTB4851x
COMIO1
UDG-07040O1@|VO2|
Not Recommended for New Designs
www.ti.com SLTS219F –FEBRUARY
DUAL COMPLEMENTARY-OUTPUT DC/DC
1FEATURES Dual Complementary Outputs
(±5V, ±12V,or ±15V) Input Voltage Range:36Vto75V On/Off Enable for Sequencing 1500 VDC Isolation Overcurrent Protection Overvoltage Protection (PTB48511 only) Over Temperature Shutdown
DESCRIPTION• Undervoltage LockoutThe PTB4851x seriesof isolated DC/DC converter
• Temperature Range: –40°Cto 85°C modules producea complementary pairof regulated
• Industry Standard Outline supply voltages for powering line-driver devicesin
Fixed Frequency Operation xDSL telecom applications. The modules operate
froma standard telecom (–48V) central office (CO)
• Synchronizes with PTB48500 supply and can provide uptoa 72Wof powerina
• Powers Line Drivers for AC-7 and Other xDSL balanced load configuration.
ChipsetsThe A-suffix module (±5V)is designedto power the
• Safety Approvals: line driver devices for the AC-7 ADSL chipset. Other
– EN 60950 voltage options powers other analog applications
UL/cUL 60950 requiringa complementary supply with relatively
balanced loads.o
STAND-ALONE APPLICATION Both the PTB48510 and PTB48511 include an
“on/off” enable control, output current limit, over-
temperature protection, and input under-voltage
lockout (UVLO). The PTB48511 adds output
overvoltage protection (OVP).
The control inputs, Enable and Sync In, are
compatible with the EN Out and Sync Out signalsof
the PTB48500 DC/DC converter. This allows the
power-up and switching frequencyof the PTB4851x
modulesto be directly controlled froma PTB48500.
Together the PTB48500 and PTB4851xA converters power and sequencing ADSL chipset.
The PTB4851x surface mount
technology contruction.on
the industry standard doesa
heatsink. Both through-hole surface mount pin
configurations are available.
