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PTB48540CAH Datasheet(PDF) 3 Page - Texas Instruments |
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PTB48540CAH Datasheet(HTML) 3 Page - Texas Instruments |
3 / 13 page For technical support and further information visit http://power.ti.com PTB48540 Series 10-W Power-Over-Ethernet Isolated Power Module Assembly Specifications (Unless otherwise stated, T a =25°C, Vin =48V (1), and Io =Iomax) PTB48540 SERIES Characteristic Symbol Conditions Min Typ Max Units Output Current Io Over Vin range PTB48540A (5 V) 0.1 (2) —2 PTB48540B (3.3 V) 0.1 (2) —3 A PTB48540C ( 12 V) 0.1 (2) — 0.85 Input Voltage Range Vin Over Io Range 36 — 57 (1) VDC Set Point Voltage Tolerance Vo tol — ±1±2%Vo Temperature Variation Regtemp –40 ≤Ta ≤ +85 °C, Io =Iomin — ±0.2 — %Vo Line Regulation Regline Over Vin range — ±1 — mV Load Regulation Regload Over Io range — ±5 — mV Total Output Voltage Variation ∆Votot Includes set-point, line, load, — ±1.5 ±3 %Vo –40 ≤Ta ≤ +85 °C Efficiency η PTB48540C (12 V) — 85 — PTB48540A (5 V) — 82 — % PTB48540B (3.3 V) — 79 — Vo Ripple (pk-pk) Vr 20 MHz bandwidth — 50 — mVpp Transient Response ttr 1 A/µs load step, 50 % to 100 % Iomax — 100 — µs ∆Vtr Vo over/undershoot Vo ≤ 5 V — ±150 — mV Vo =12 V — ±200 — Output Voltage Adjust Vadj — ±10 — %Vo Current Limit Threshold Ilim Vin = 42 V, ∆Vo = –1 % — 150 — %Iomax Switching Frequency ƒs Over Vin range 200 300 400 kHz Under-Voltage Lockout UVLO Vin rising — 40 42 V Vin falling 30 32 — Output Inhibit (Pin 13) Referenced to Input Ref (pin 4) Input High Voltage VIH 4.5 — Open (3) V Input Low Voltage VIL –0.2 — +0.8 Input Low Current IIL —–2 —mA Standby Input Current Iin standby pins 13 & 4 connected — 1 — mA External Output Capacitance Cout Vo ≤ 5 V 0 (4) — 1000 µF Vo = 12 V 0 (4) — 330 Internal Input Capacitance Cin Vin < UVLO threshold 0.05 0.1 0.12 µF Vin > UVLO threshold 5 7 — Detection Resistance Rdetect 2.7 V ≤ Vin ≤ 10.1 V 23.75 24.9 (5) 26.25 k Ω Classification Current Iclass 14.5 V ≤ Vin ≤ 20.5 V 2 2.5 (6) 3mA Operating Temperature Range Ta Over Vin range –40 — +85 (7) °C Over Temperature Protection OTP Measured at pin 7 Threshold 135 — — °C Hysterisis — 20 — Isolation Voltage Input–output 1500 — — V Capacitance — 1,100 — pF Resistance 10 ——M Ω Solder Reflow Temperature Treflow Surface temperature of module body or pins — — 235 (8) °C Storage Temperature Ts — –40 — +125 °C Reliability MTBF Per Bellcore TR-332 4 — — 106 Hrs 50 % stress, Ta =40 °C, ground benign Mechanical Shock — Per Mil-Std-883D, method 2002.3, — 500 — G’s 1 mS, half-sine, mounted to a fixture Mechanical Vibration — Mil-Std-883D, Method 2007.2 Pkg EUP — 20 — G’s 20-2000 Hz, soldered to PC Pkg EUQ — 7.5 — Weight — — — 12 — grams Flammability — Materials meet UL 94V-0 Notes: (1) The input voltage Vin is applied and measured between ‘Data Line A’ (pin 10) and ‘Data Line B’ (pin 9), or between ‘Spare Line A’ (pin 8) and ‘Spare Line B (pin 7). These inputs accept either polarity. (2) The DC/DC converter will operate at no load with reduced specifications. (3) The Output Inhibit (pin 13) is referenced to ‘Input Ref ’ (pin 4) and has an internal pull-up. If it is left open circuit the converter will operate when input power is applied. The open-circuit voltage is typically 5 V. Refer to the application notes for interface considerations. (4) An output capacitor is not required for proper operation. (5) This is the default for a “Valid Device” PD detection signature. (6) This is the default for a “Class 0” PD classification signature. (7) See Safe Operating Area curves or contact the factory for the appropriate derating. (8) During the reflow of the SMD package version do not elevate the peak temperature of the module, pins, or internal components above the stated maximum. SLTS224B – APRIL 2004 – REVISED JULY 2004 Not Recommended for New Designs |
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