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Details, datasheet, quote on part number:PT4663
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Datasheet text preview:
PT4660 Series--48V
20-A Dual Output Isolated DC/DC Converter
SLTS140B MAY 2001 REVISED JANUARY 2003
Features
· Dual Outputs (Independantly Regulated) · Power-up/Down Sequencing · Input Voltage Range: 36V to 75V · 1500 VDC Isolation · Temp Range: 40° to 100°C · High Efficiency: 88% · Fixed Frequency Operation · Over-Current Protection (Both Outputs) · Dual Logic On/Off Control · Over-Temperature Shutdown · Over-Voltage Protection (Coordinated Shutdown) · Under-Voltage Lockout · Input Differential EMI Filter · IPC Lead Free 2 · Safety Approvals: UL1950 CSA 22.2 950
Description
The PT4660 ExcaliburTM Series is a dual-output isolated DC/DC converter that combine state-of-theart power conversion technology with u n p a r a l l e l e d flexibility. Operating from a standard telecom (48V) central office supply, the PT4660 series provides up to 20 ADC of output current from two independently regulated voltages (each output 15 ADC max). The PT4660 series is characterized with high efficiencies and ultra-fast transient response, and incorporates many features to facilitate system integration. These include a flexible "On/Off" enable control, output current limit, over-temperature protection, and an input under-voltage l o c k - o u t . In addition both output voltages are designed to meet the power-up/power-down sequencing requirements of popular DSPs. The PT4660 series is housed in space-saving solderable copper case. The package does not require a heatsink and is available in both v e r t i c a l and horizontal configurations, including surface mount. The `N' configuration occupies less than 2 in² of PCB area.
Ordering Information
Pt. No. PT4661o PT4662o PT4663o PT4665o PT4666o PT4667o PT4668o = = = = = = = Vo1/Vo2 5.0/3.3 Volts 3.3/2.5 Volts 3.3/1.8 Volts 3.3/1.5 Volts 2.5/1.8 Volts 5.0/1.8 Volts 3.3/1.2 Volts
PT Series Suffix (PT1234 x )
Case/Pin Configuration Vertical Horizontal SMD Order Suffix Package Code (EKD) (EKA) (EKC)
N A C
(Reference the applicable package code drawing for the dimensions and PC board layout)
Typical Application
V 1 Adjust V 2 Adjust
20 V o 2 adj 13 V o 1 adj Vo 1 912
+ V IN
Vo 1 Vo 2
1
+Vin
Vo 2
2124
PT4660
3 4 E N 1* EN 2 Vin COM 1419 L O A D L O A D
V IN
2
COM
* Inverted logic
For technical support and more information, see inside back cover or visit www.ti.com
PT4660 Series--48V
20-A Dual Output Isolated DC/DC Converter
SLTS140B MAY 2001 REVISED JANUARY 2003
Pin-Out Information
Pin
1 2 3 4 5 6 7 8 9
On/Off Logic
Pin
10 11 12 13 14 15 16 17 18
Function
+Vin -Vin EN 1 EN 2 TEMP AUX Do Not Connect Do Not Connect +Vo1
Function
+Vo1 +Vo1 +Vo1 Vo1 Adjust COM COM COM COM COM
Pin
19 20 21 22 23 24 25 26
Function
COM Vo2 Adjust +Vo2 +Vo2 +Vo2 +Vo2 Do Not Connect Do Not Connect
Pin 3 1 0 ×
Pin 4 × 1 0
Output Status Off On Off
Notes: Logic 1 =Open collector Logic 0 = Vin (pin 2) potential For positive Enable function, connect pin 3 to pin 2 and use pin 4. For negative Enable function, leave pin 4 open and use pin 3.
Note: Shaded functions indicate signals that are r eferenced to the input (-Vin) potential.
Pin Descriptions
+Vin: The positive input supply for the module with respect to Vin. When powering the module from a -48V telecom central office supply, this input is connected to the primary system ground. Vin: The negative input supply for the module, and the 0VDC reference for the EN 1, EN 2, TEMP, and AUX signals. When the module is powered from a +48V supply, this input is connected to the 48-V Return. EN 1: An open-collector (open-drain) negative logic input that enables the module output. This pin is TTL compatible and referenced to V in. A logic `0' at this pin enables the module's outputs. A logic `1' or high impedance disables the module's outputs. If not used, the pin must be connected to Vin. EN 2: An open-collector (open-drain) positive logic input that enables the module output. This pin is TTL compatible and referenced to Vin. A logic `1' or high impedance enables the module's outputs. If not used, the pin should be left open circuit. AUX: Produces a regulated output voltage of 11.6V ±5%, which is referenced to Vin. The current drawn from the pin must be limited to 10mA. The voltage may be used to indicate the output status of the module to a primary referenced circuit, or power a low-current amplifer. TEMP: This pin produces an output signal that tracks the module's metal case temperature. The output voltage is referenced to Vin and rises approximately 10mV/°C from an intital value of 0.1VDC at 40°C. VTemp =0.5 + 0.01·TCase The signal is available whenever the module is supplied with a valid input voltage, and is independant of the enable logic status. (Note: A load impedance of less than 1M will adversly affect the module's over-temperature shutdown threshold. Use a high-impedance input when monitoring this signal.) Vo1: The higher regulated output voltage, which is referenced to the COM node. Vo2: The lower regulated output voltage, which is referenced to the COM node. COM: The secondary return reference for the module's two regulated output voltages. It is dc isolated from the input supply pins. Vo1 Adjust: Using a single resistor, this pin allows Vo1 to be adjusted higher or lower than the preset value. If not used, this pin should be left open circuit. Vo2 Adjust: Using a single resistor, this pin allows Vo2 to be adjusted higher or lower than the preset value. If not used, this pin should be left open circuit.
For technical support and more information, see inside back cover or visit www.ti.com
PT4660 Series--48V
20-A Dual Output Isolated DC/DC Converter
SLTS140B MAY 2001 REVISED JANUARY 2003
Specifications
Characteristics Output Current
(Unless otherwise stated, Ta =25°C, Vin =48V, & Io 1=Io 2=10A) Symbols Io1 Io2 Io1+Io2 Vin Votol Regtemp Regline Regload Regcross Votol Conditions Vo1 Vo2 T tal (both outputs) o Min 0 0 0 36 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 15.5 -- -- 270 -- 30 -- Referenced to Vin VIH VIL IIL Iin standby Cout V iso C iso R iso Vtemp OTP Ta Treflow Ts -- -- -- -- Pins 2, 3, & 4 connected Per each output 3.5 0 -- -- 0 1500 -- 10 -- -- -- 40 -- 40 -- -- -- -- -- -- 0.5 3 -- -- 1500 -- 0.1 (5) 1.5 (5) 110 -- -- -- 500 10 (8) 20 (8) 90 -- 0.8 -- 5 5,000 -- -- -- -- -- -- +85 (6) 215 (7) +125 -- -- -- --
(4)
PT4660 SERIES Typ Max
-- -- -- 48 ±1 ±0.5 ±5 ±2 ±2 ±2 ±2 ±2 ±2 88 87 86 86 85 88 86 -- -- 25 6.0 18 (2) 5 125 (3) -- 34 32 2 15 15 20 (1) 75 ±2 -- ±10 ±10 ±10 ±10 ±5 ±3 ±3 -- -- -- -- -- -- -- 75 50 100 -- -- 10 -- 330 36 -- --
Units A A V %Vo %Vo mV mV mV %Vo
Input Voltage Range Set Point Voltage T lerance o Temperature Variation Line Regulation Load Regulation Cross Regulation Total Output Variation Efficiency
Vo Ripple (pk-pk) Transient Response Current Limit Output Rise Time Output Over-Voltage Protection Switching Frequency Under-Voltage-Lockout Internal Input Capacitance On/Off Control Input High Voltage Input Low Voltage Input Low Current Standby Current External Output Capacitance Primary/Secondary Isolation Temperature Sense Over-T mperature Shutdown e Operating T mperature Range e Solder Reflow Temperature Storage Temperature Mechanical Shock Mechanical Vibration Per Mil-STD-883D, 202,000Hz Weight Flammability
Vr ttr Ilim Von OVP fs UVLO Cin
Vo1 Vo2 Vo1 Vo2 Vo1 Vo2 PT4661 PT4662 PT4663 PT4665 PT4666 PT4667 PT4668 Io1=Io2=5A, 20MHz bandwidth Vo =5V Vo <5V 1A/µs load step from 50% to 100% Iomax (either output) Each output with other unloaded At turn-on to within 90% of Vo Either output; shutdown and latch off Rising Falling
40 to +100°C Case, Io1 =Io2 =0A Over Vin range with Io1=Io2=5A 1A Io1 15A, Io2 =1A 1A Io2 15A, Io1 =1A 1A Io2 15A, Io1 =1A 1A Io1 15A, Io2 =1A Includes set-point, line load, 40°C to +100°C case
%
mVpp µSec %Vo A mSec %Vo kHz V µF V mA mA µF V pF M V °C °C °C °C G's G's grams
Output voltage at temperatures:-
40°C 100°C
Case temperature (auto restart) Over Vin range Surface temperature of module pins or case -- Per Mil-STD-883D, Method 2002.3 Vertical Horizontal -- Materials meet UL 94V-0
Notes: (1) The sum-total current from Vo1 & Vo2 must not exceed 20ADC. (2) This figure is the inception of the current limit. Consult the application notes for further information on the current limit characteristics. (3) This is a fixed parameter. Adjusting Vo1 or Vo2 higher will increase the module's sensitivity to over-voltage detection. For more information, see the application note on output voltage adjustment. (4) The EN 1 and EN2 control inputs (pins 3 & 4) have internal pull-ups and may be controlled with an open-collector (or open-drain) transistor. Both inputs are diode protected and can be connected to +Vin . The maximum open-circuit voltage is 5.4V. (5) Voltage output at "TEMP" pin is defined by the equation:- VTEMP = 0.5 + 0.01·T, where T is in °C. See pin descriptions for more information. (6) See SOA curves or consult the factory for the appropriate derating. (7) During solder reflow of SMD package version do not elevate the module case, pins, or internal component temperatures above a peak of 215°C. For fur ther guidance refer to the application note, "Reflow Soldering Requirements for Plug-in Power Surface Mount Products," (SLTA051). (8) The case pins on the through-holed package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
For technical support and more information, see inside back cover or visit www.ti.com
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