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PT4401A Datasheet(PDF) 3 Page - Texas Instruments |
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PT4401A Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 10 page  For technical support and more information, see inside back cover or visit www.ti.com Note A: All data listed in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter. Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperature. PT4401—48V 75-W 48-V Input Isolated DC/DC Converter PT4401 Characterstic Data PT4401 Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Vo =3.3V, Co =0µF, and Io =Iomax) PT4401 Characteristic Symbol Conditions Min Typ Max Units Output Current Io Over Vin range 0 — 20 A Input Voltage Range Vin Over Io Range 36 48 75 V Set Point Voltage Tolerance Vo tol — ±0.6 (1) —%Vo Temperature Variation Regtemp –40° >Ta > +85°C — ±0.8 — %Vo Line Regulation Regline Over Vin range — ±1 — mV Load Regulation Regload Over Io range — ±1 — mV Total Output Voltage Variation ∆Votot Includes set-point, line, load, — ±1.6 ±3 %Vo –40° >Ta > +85°C Efficiency η —89 — % Vo Ripple (pk-pk) Vr 20MHz bandwidth — 50 — mVpp Transient Response ttr 1A/µs load step, 50% to 100% Iomax — 75 — µs ∆Vtr Vo over/undershoot — ±5 — %Vo Over-Current Threshold ITRIP Shutdown, followed by auto-recovery — 26 — A Output Over-Voltage Protection OVP Output shutdown and latch off — 125 — %Vo Switching Frequency ƒo Over Vin range — 300 — kHz Under-Voltage Lockout UVLO — 32 — V Remote On/Off Input Referenced to –Vin Input High Voltage VIH 4.5 — Open (2) V Input Low Voltage VIL –0.2 — +0.8 Input Low Current IIL — –0.3 — mA Standby Input Current Iin standby pins 1 & 2 connected — 2 — mA Internal Input Capacitance Cin — 1.4 — µF External Output Capacitance Cout Between +Vo and –Vo 0 5,000 µF Isolation Voltage Input-output & input-case 1500 — — Vdc Capacitance Input-output — 1200 — pF Resistance Input-output 10 — — M Ω Notes: (1) If (–)Remote Sense is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy. (2) The Remote On/Off input has an internal pull-up. If it is left open-circuit the module will operate when input power is applied. A discrete MOSFET or bipoloar transistor is recommended to control this input. The open-circuit voltage is typically 5V. See application notes for interface considerations. 20 30 40 50 60 70 80 90 0 4 8 12 16 20 Iout (A) 300LFM 200LFM 100LFM Nat conv Airflow Efficiency vs Load Current; Vin =48V (See Note A) Output Ripple vs Load Current; Vin =48V (See Note A) Power Dissipation vs Load Current; Vo =3.3V (See Note A) Safe Operating Area; Vin =48V (See Note B) 50 60 70 80 90 100 0 4 8 12 16 20 Iout (A) 3.3V 2.5V 1.8V 1.5V VOUT 0 20 40 60 80 100 0 4 8 12 16 20 Iout (A) 3.3V 2.5V 1.8V 1.5V VOUT 0 2 4 6 8 10 12 0 4 8 12 16 20 Iout (A) 75.0V 60.0V 48.0V 36.0V VIN |
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