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PTB48580AAH Datasheet(PDF) 2 Page - Texas Instruments |
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PTB48580AAH Datasheet(HTML) 2 Page - Texas Instruments |
2 / 13 page For technical support and further information visit http://power.ti.com Ordering Information Package Options (PT48580x ❒❒) Code Description Pkg Ref. (1) AH Horiz. T/H (ERV) AS SMD, Standard (2) (ERS) Output Voltage (PTB48580 ❒xx) Code Voltage A ±5 V B ±12 V Notes: (1) Reference the applicable package reference drawing for the dimensions and PC board layout (2) “Standard” option specifies 63/37, Sn/Pb pin solder material. Pin Descriptions +V I: The positive input supply for the module with respect to –V I. When powering the module from a –48 V telecom central office supply, this input is connected to the primary system ground. –V I: The negative input supply for the module, and the 0 VDC reference for the ‘Enable*’, and ‘Sync In’ signals. When the module is powered from a +48-V supply, this input is connected to the 48-V Return. +V O: The positive output supply voltage, which is refer- enced to the ‘COM’ node. The voltage at ‘+V O’ has the same magnitude, but is the complement to that at ‘-V O’. –V O: The negative output supply voltage, which is refer- enced to the ‘COM’ node. The voltage at ‘-V O’ has the same magnitude, but is the complement to that at ‘+V O’. COM: The secondary return reference for the module’s regulated output voltages. This node is dc isolated from the input supply pins. ±V O Adjust: Using a single resistor, this pin allows the magnitude of both ‘+V O’ and ‘–VO’ to be adjusted to- gether, either higher or lower than their preset value. If not used, this pin should be left open circuit. Enable*: This is an open-collector (open-drain) negative logic input that enables the module output. This pin is referenced to -VI. A logic ‘0’ at this pin enables the module’s outputs, and a high impedance disables the outputs. If this feature is not used the pin should be con- nected to –VI. Note: Connecting this input directly to the “EN Out” pin of the PTB4850x enables the output voltages from both converters (PTB4850x and PTB48580) to power up in sequence. Sync In: This pin is used when the PTB48580 and PTB4850x DC/DC converter modules are used together. Connect- ing this pin to the ‘Sync Out’ of the PTB4850x module allows the PTB48580 to be synchronized to the same switch conversion frequency as the PTB4850x. Environmental and General Specifications (Unless otherwise stated, all voltages are with respect to –VI) Characteristics Symbols Conditions Min Typ Max Units Input Voltage Range VI Over output load range 36 48 75 VDC Isolation Voltage Input–output/input–case 1500 — — V Capacitance Input to output — 1500 — pF Resistance Input to output 10 — — M Ω Operating Temperature Range T A Over V I Range –40 — +85 °C Over-Temperature Protection OTP Shutdown threshold — 115 (i) — °C Hysterisis — 10 — Solder Reflow Temperature TREFLOW Surface temperature of module body or pins 235 (ii) °C Storage Temperature TS — –40 — 125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 — 500 — G’s 1 msec, ½ Sine, mounted Mechanical Vibration Mil-STD-883D, Method 2007.2 T/H — 20 — G’s 20-2000 Hz SMD — 5 — Weight — — 13.5 — grams Flammability — Meets UL 94V-O Notes: (i) This parameter is guaranteed be design (ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum. Base Pt. No. (PTB48580xxx) Order Prefix Description PTB48580xxx Basic Model PTB48580 Series Dual Complementary-Output DC/DC Converter for DSL SLTS240 DECEMBER 2004 Not Recommended for New Designs |
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