NON-ISOLATED DC/DC CONVERTERS 2.4V-5.5V Input 0.75V-3.63V/6A Output S7BA-06F2Ax Series • Non-Isolated • Under-voltage Lockout (UVLO) • High Efficiency • Over Temperature Protection • High Power Density • OCP/SCP • Excellent Thermal Performance • Wide Input • Low Cost • Wide Trim Range • Remote On/Off • Active Low/High (option) • Flexible Output Voltage Sequencing • Able to Sink & Source Current • Fixed Frequency (300KHz) Description The Bel S7BA-06F2Ax modules are a series of non-isolated dc-dc converters that deliver up to 6A of output current with full load efficiency of 93% at 3.3V output. These modules provide precisely regulated voltage programmable via external resistor from 0.75V to 3.63V over a wide range of input voltage (2.4V-5.5V). 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 current 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 0.75V -3.63V 2.4V – 5.5V 6A 21.8W 93% S7BA-06F2AL S7BA-06F2A0 Note: Add “G” to the end of the Model Number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Min Typ Max Input Voltage (continuous) -0.3V - 5.8V Output Enable Terminal Voltage -0.3V - 5.5V 1 -0.3V - Vin Ambient Temperature -40°C - 85°C Storage Temperature -55°C - 125°C Sequencing Voltage Notes Notes: All specifications are typical at 25°C unless otherwise stated. 1. S7BA-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. 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 2.4V-5.5V Input 0.75V-3.63V/6A Output Input Specifications Parameter Input Voltage Input Current (full load) Min 2.4V Typ - Max 5.5V Notes Vo, set ≤ Vin-0.5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=0.75V - - 4.73A 5.49A 5.11A 4.31A 3.57A 2.40A Vo=3.3V Vo=0.75V 1.8V 50mA 25mA 0.6mA 120mA 35mA 2.05V 2.0V 0.04A2s 2.4V - Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (RMS) I2t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold Tested with simulated source impedance of 1uH, 5Hz to 20MHz. Output Specifications Parameter Output Voltage Set Point Min -2%Vo,set Typ - Max 2%Vo,set Output Voltage Set Point -3%Vo,set - 3%Vo,set 0.7525V - 3.63V Load Regulation - 0.4%Vo,set - Line Regulation Regulation Over Temperature (-40°C to +85°C) Output Current Current Limit Threshold Short Circuit Surge Transient - 0.3%Vo,set - Io=0%~50% full load; Io=50%~100% full load Vin=Vin, min to Vin, max - 0.4%Vo,set - Tref=Ta, min to Ta, max 0A 9A - 0.32A2s 6A 18A - Ripple and Noise (pk-pk) - 40mV 70mV Ripple and Noise (RMS) - 10mV 30mV Turn on Time Overshoot at Turn on Output Capacitance - 6mS 0% 10mS 3% 0uF 0uF - 1000uF 3000uF Adjustment Range Selected by External Resistor or Voltage ESR ≥ 1mohm ESR ≥ 10mohm Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO = 0.75V 3.63V - 130mV 25uS 130mV 25uS - Notes Vin=5V, 50% full load Over all operating input voltages, resistive loads and temperature conditions Hiccup mode Tested with 0-20MHz, with 10uF tantalum capacitor & 1uF/10V ceramic capacitor at output di/dt=2.5A/uS; Vin=5V; and with 10uF tantalum capacitor & 1uF/10V 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 2.4V-5.5V Input 0.75V-3.63V/6A Output General Specifications Parameter Min Typ Max Notes 250KHz 0.7525V 93% 91% 88% 87% 84% 78% 300KHz 135°C - 350KHz 3.63V Efficiency Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=0.75V Switching Frequency Over Temperature Shutdown Output Voltage Trim Range MTBF Measured at Vin=5V, full load Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25°C) 6,954,974 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 0.8 x 0.45 x 0.25 20.32 x 11.42 x 6.36 5g - Note: All specifications are typical at 25°C unless otherwise stated. Control Specifications Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Signal Low (Unit On) Signal High (Unit Off) Sequencing Voltage Sequencing Slew Rate Capability Sequencing Delay Time Min Typ Max Notes -0.2V -0.2V 1.5V - 0.3V Vin, max 0.3V Vin, max 0V - Vin Active High: S7BA-06F2A0; Remote On/Off pin open, Unit on. Active Low: S7BA-06F2AL; Remote On/Off pin open, Unit on. Sequencing Voltage applied on SEQ pin should be higher than output voltage. - - 2V/mS 10mS - - - 100mV 200mV 200mV 400mV Delay from Vin, min to application of voltage on SEQ pin Tracking Accuracy Power-Up Power-Down Output Trim Equations Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground. Vout RTrimUp = 21.07 − 5.11 Vadj − 0.7525 Module Trim Rtrim GND 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. Vout VTrimUp = 0.7 − 0.1698 × (Vadj − 0.7525) Module Trim Vtrim GND 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 2.4V-5.5V Input 0.75V-3.63V/6A Output Efficiency Data 2.5V Module 3.3V Module 100.0% 100.0% 95.0% 95.0% 90.0% 85.0% 4.5V 80.0% 5V 75.0% 5.5V Efficiency Efficiency 90.0% 85.0% 75.0% 70.0% 70.0% 65.0% 65.0% 60.0% 0.6A 1.5A 3.0A 4.5A 60.0% 0.6A 6.0A 3V 5V 5.5V 80.0% 1.5A Vo=3.3V 6.0A Vo=2.5V 1.5V Module 1.8V Module 100.0% 100.0% 95.0% 95.0% 90.0% 85.0% 3V 80.0% 5V 5.5V 75.0% Efficiency 90.0% Efficiency 4.5A Output Current Output Current 85.0% 3V 80.0% 5V 75.0% 5.5V 70.0% 70.0% 65.0% 65.0% 60.0% 0.6A 60.0% 1.5A 3.0A 4.5A 0.6A 6.0A 1.5A 3.0A 4.5A 6.0A Output Current Output Current Vo=1.8V Vo=1.5V 0.7525V Module 1.2V Module 100.0% 100.0% 95.0% 95.0% 90.0% 85.0% 3V 80.0% 5V 5.5V 75.0% Efficiency 90.0% Efficiency 3.0A 85.0% 3V 80.0% 5V 75.0% 5.5V 70.0% 70.0% 65.0% 65.0% 60.0% 0.6A 60.0% 1.5A 3.0A Output Current Vo=1.2V 4.5A 6.0A 0.6A 1.5A 3.0A 4.5A 6.0A Output Current Vo=0.7525V 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 2.4V-5.5V Input 0.75V-3.63V/6A Output Thermal Derating Curves 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 2.4V-5.5V Input 0.75V-3.63V/6A Output Pin Connections Pin Function 1 Remote On/Off 2 Vin+ 3 SEQ 4 Ground 5 Trim 6 Vout+ ©2004 Bel Fuse Inc. Specifications subject to change without notice. 111904 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com