GPLW5V060

Industry’s Highest Current DC/DC Converter. 48V or 24V Input, 250W, 120A Output, 3.3V 90A, 2.5V 100A, 1.8V 120A, 1.5V 120A, 1.2V 120A standard with extra wide trim range LEO Series The Leo is a 3/4 brick CoolConverter™ in the Galaxy family of high-efficiency DC/DC converters. Typical Efficiency: 91% at 1.8V, 60A; 88% at 1.8V, 120A Highest Ripple Frequency, 600kHz, for Low EMI Industry Compatible Footprint Democratic Secondary-side Current Sharing Ultra High Initial Setpoint Accuracy, ±0.2% Wide Trim Range, +10 to -70% Single Pole Transient Response (No Ringing) Rapid Turn-on from Valid Input Voltage Two Year Warranty The open frame 3/4 brick Leo is also available with an optional heatsink. Control Functions Uses Patented Power Supply Control and Architecture Primary/Secondary Microprocessor Controlled Three Enable Signals Standard for Maximum Flexibility Differential Remote Sense Active High Power-Good Signal Protection Features Over Temperature Protection Over Voltage Protection Under Voltage Lockout Delayed Lockout for Over Input Voltage Continuous Constant Current Limit Typical Characteristics Output Setpoint Accuracy: ±0.2% Load Regulation: ±0.25% Line Regulation: ±0.25% Regulation over Line, Load, and Temperature: ±1% Leo Series, Page 1 PRELIMINARY Part No. 99–001 Rev. 4.0–120902 General Specifications VIN = 48VDC, TA @25 °C, 300 LFM airflow, VOUT = rated output voltage , IOUT = Full Load unless otherwise noted. Available output power depends on ambient temperature and good thermal management. (See application graphs for limits.) Input Characteristics Parameter 48V Series Min Max Min 24V Series Max Units Operating Input Voltage Input Current (Model Dependent) Input Capacitance Input Hysteresis, Low Line Reflected Input Ripple through 10µH with 47µF on input Control Signal Low Input Voltage1 Control Signal High Input Voltage Maximum Input Voltage, non-operating No Load Input Current Output Characteristics Output Voltage, half-load, 48Vin, 25°C Regulation Over Line, Load & Temperature Voltage Ripple 5V 5V ≤ 3.3V ≤ 3.3V Current Range 5V 3.3V 2.5V ≤1.8V Short Circuit Trim Range Overvoltage Protection, Tracking, Latching Overvoltage Protection, Redundant, Latching Isolation Isolation Test Voltage, Input/Output (Basic) Isolation Resistance Features Over-temperature Protection, Thermal Sensor2 Input-output Capacitance Isense Signal, no load to current limit Ishare Accuracy (See application notes) Power Good Range Power Good High Level 35.5 1 75.5 8.6 6.6 3 1.5 1 17.5 1 36.5 17 20 3 20 1 VDC A µF VDC mARMS VDC VDC VDC mA %VNOM %VNOM mVP-P mVRMS mVP-P mVRMS ADC ADC ADC ADC %IMAX %VNOM %VSET %VNOM VDC MΩ 4 100 70 99.8 99 100.2 101 50 12 35 9 60 90 100 120 125 +10 135 140 4 100 100 99.8 99 100.2 101 50 12 35 9 45 85 100 120 125 +10 135 140 0 0 0 0 105 -70 125 135 2250 10 120 2200 0 95 95 4.75 0 0 0 0 105 -70 125 135 2250 10 125 2.5 105 105 5.25 120 2200 0 95 95 4.75 125 2.5 105 105 5.25 °C pF VDC % %VSET VDC Notes: 1. Internal pull up on both Control_L Primary and Secondary and Control_H pins are provided which source