SRBA-06F2AX BEL | Alldatasheet
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output
- Non-Isolated • Under-voltage Lockout (UVLO)
- High Efficiency • OCP/SCP
- High Power Density • Wide Input
- Excellent Thermal Performance • Wide Trim Range
- Low Cost • Active Low/High (option)
- Remote On/Off
- Flexible Output Voltage Sequencing
- Able to Sink & Source Current
- Fixed Frequency (300 kHz)
Description
The Bel SRBA-06F2Ax modules are a series of non-isolated dc-dc converters that deliver up to 6 A of output current with full load efficiency of 93% at 3.3 V output. These modules provide precisely regulated voltage These modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. The open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features include remote On/Off, over current protection, short circuit protection, wide input, and programmable output voltage. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active Low Model Number Active High Notes: 1. These modules use a buck topology, so the output voltages must be 0.5 V less than the input voltage. 2. Add “G” to the end of the Model Number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Min Typ Max Notes Input Voltage (continuous) -0.3 V - 5.8 V Output Enable Terminal Voltage -0.3 V - 5.5 V Sequencing Voltage 1 -0.3 V - Vin Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C Notes: All specifications are typical at 25 °C unless otherwise stated. 1. SRBA-06F2Ax series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When the sequencing feature is not used, tie the SEQ pin to Vin. SRBA-06F2Ax Series RoHS Compliant
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Input Specifications Parameter Min Typ Max Notes Input Voltage 2.4 V - 5.5 V Vo, set ≤ Vin-0.5 V Input Current (full load) Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V 4.73 A 5.49 A 5.11 A 4.31 A 3.57 A 2.40 A Input Current (no load) Vo=3.3 V Vo=0.75 V 50 mA 25 mA Remote Off Input Current - 0.6 mA - Input Reflected Ripple Current (pk-pk) - 120 mA - Input Reflected Ripple Current (rms) - 35 mA - Tested with simulated source impedance of 1uH, 5 Hz to 20 MHz. I2t Inrush Current Transient - - 0.04A 2s Turn-on Voltage Threshold - 2.05 V 2.4V Turn-off Voltage Threshold 1.8 V 2.0 V - Output Specifications Parameter Min Typ Max Notes Output Voltage Set Point -2%Vo,set - 2%Vo,set Vin=5 V, 50% full load Output Voltage Set Point -3%Vo,set - 3%Vo,set Over all operating input voltages, resistive loads and temperature conditions Adjustment Range Selected by External Resistor or Voltage 0.7525 V - 3.63 V Load Regulation - 0.4%Vo,set - Io=0%~50% full load; Io=50%~100% full load Line Regulation - 0.3%Vo,set - Vin=Vin, min to Vin, max Regulation Over Temperature (-40 °C to +85 °C) - 0.4%Vo,set - Tref=Ta, min to Ta, max Output Current 0A - 6 A Current Limit Threshold 9A - 18 A Hiccup mode Short Circuit Surge Transient - 0.32 A 2s - Ripple and Noise (pk-pk) - 40 mV 70 mV Ripple and Noise (rms) - 10 mV 30 mV Tested with 0-20 MHz, with 10 uF tantalum capacitor & 1uF/10 V ceramic capacitor at output Turn on Time - 6 mS 10 mS Overshoot at Turn on - 0% 3% Output Capacitance ESR ≥ 1mohm ESR ≥ 10mohm 0 uF 0 uF 1000 uF 3000 uF Transient Response 50% ~ 100% Max Load - 130 mV - Settling Time - 25 uS - 100% ~ 50% Max Load - 130 mV - Settling Time VO = 0.75 V - 3.63 V - 25 uS - di/dt=2.5 A/ uS; Vin=5 V; and with 10 uF tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at output Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output General Specifications Parameter Min Typ Max Notes Efficiency Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V 93% 91% 88% 87% 84% 78% Measured at Vin=5 V, full load Switching Frequency 250 kHz 300 kHz 350 kHz Over Temperature Shutdown - 135 °C - Output Voltage Trim Range 0.7525 V - 3.63 V MTBF 6,954,974 hours Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) Dimensions Inches (L × W × H) Millimeters (L × W × H) 0.8 x 0.45 x 0.25 20.32 x 11.42 x 6.36 Weight - 5 g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max Notes Remote On/Off Signal Low (Unit Off) -0.2 V - 0.3 V Signal High (Unit On) - - Vin, max Active High: SRBA-06F2A0; Remote On/Off pin open, Unit on. Signal Low (Unit On) -0.2 V - 0.3 V Signal High (Unit Off) 1.5 V - Vin, max Active Low: SRBA-06F2AL; Remote On/Off pin open, Unit on. Sequencing Voltage 0 V - Vin Sequencing Voltage applied on SEQ pin should be higher than output voltage. Sequencing Slew Rate Capability - - 2 V/ mS Sequencing Delay Time 10 mS - - Delay from Vin, min to application of voltage on SEQ pin Tracking Accuracy Power-Up Power-Down 100 mV 200 mV 200 mV 400 mV Output Trim Equations Equation for calculating the trim resistor (in k Ω) given the desired adjusted voltage (Vadj) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground. 11.57525.0 07.21 −−= adj TrimUp VR Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The Trim Up voltage should be connected between the Trim pin and Ground. )7525.0(1698.07.0 −×−= adjTrimUp VV RtrimModule Vout GND Trim Vtrim Module Vout GND Trim
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Efficiency Data Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.7525 V 3.3V Module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% Output Current Efficiency 4.5V 5.5V 2.5V Module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% Output Current Efficiency 5.5V 1.8V Module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% Output Current Efficiency 5.5V 1.5V Module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% Output Current Efficiency 5.5V 1.2V Module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% Output Current Efficiency 5.5V 0.7525V Module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% Output Current Efficiency 5.5V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Thermal Derating Curves Vin=5.0 V, Vo=3.3 V Vin=5.0 V, Vo=0.75 V Vin=3.3 V, Vo=2.5 V Vin=3.3 V, Vo=0.75 V
©2005 Bel Fuse Inc. Specifications subject to change without notice. 120905 CORPORATE FAR EAST EUROPE Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd.
206 Van Vorst Street 8F/ 8 Luk Hop Street Preston Technology Management Centre
Jersey City, NJ 07302 San Po Kong Marsh Lane, Suite G7, Preston Tel 201-432-0463 Kowloon, Hong Kong Lancashire, PR1 8UD, U.K. Fax 201-432-9542 Tel 852-2328-5515 Tel 44-1772-556601 www.belfuse.com Fax 852-2352-3706 Fax 44-1772-888366 www.belfuse.com www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Mechanical Outline PAD SIZE: RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. Pin Connections Pin Function