NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C SRAH-07C / VRAH-07C Series RoHS Compliant • Nonisolated • Compact, low profile surface mount package • Fixed frequency • High efficiency means less power dissipation • Excellent thermal performance • Optimized for cost • Remote on/off • Undervoltage lockout (UVLO) • Over current and short circuit protection • Industrial temperature range -40° to +85° C Description The Bel SRAH-07C and VRAH-07C modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 3.3V source. These converters are available in a range of output voltages from 0.9V to 2.5V. They are packaged in a compact, overmolded package rated at 7A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. Standard features include remote on/off, over current and short circuit protection, and output voltage adjust. These products may be used almost anywhere low voltage silicon is employed and a 3.3V source is available. Typical applications include file servers, routers, line cards and other computing and communications equipment. Applications Options • Distributed power architectures • • Data networking equipment • Telecommunications • Computers and peripherals Wide range adjustable output Part Number Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Part Number Surface Mount Part Number Vertical Mount 2.5V 3.3V 7A 17.5W 92% SRAH-07C250 VRAH-07C250 1.8V 3.3V 7A 12.6W 88% SRAH-07C180 VRAH-07C180 1.5V 3.3V 7A 10.5W 86% SRAH-07C150 VRAH-07C150 1.2V 3.3V 7A 8.4W 83% SRAH-07C120 VRAH-07C120 0.9V 3.3V 7A 6.3W 80% SRAH-07C090 VRAH-07C090 0.9V - 2.5V 3.3V 7A 17.5W 92% SRAH-07C1A0 VRAH-07C1A0 ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 1 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Absolute Maximum Ratings Parameter Max Unit -0.3 6 V Vouten -0.3 6 V Ambient Temperature Tamb -40 85 °C Storage Temperature Tstor -40 125 °C Continuous Input Voltage Output Enable Terminal Voltage Symbol Min Vin Typical Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC converter or may permanently damage the device. Input Specifications Parameter Operating Input Voltage Module Symbol Min All Vin 3 Input Current Typical Max Units 3.6 V Iin No Load Input Current A 2.5V 1.8V 1.5V 1.2V 0.9V 6.6 5.3 4.6 3.8 3.0 All 110 mA 7 15 mA Remote Off Input Current Input Reflected Ripple Current1 All 50 80 mArms Input Reflected Ripple Current (P-P)1 All 150 250 mApk I2t Inrush Current Transient All 0.08 0.16 A2s Turn On Voltage Threshold All 2.8 V Turn Off Voltage Threshold All 2.5 2.4 V Note: Input capacitance 270µF/16V, ESR = 0.03 Ω max at 100kHz @ 25° C. 1. With simulated source impedance of 500nH, 5Hz to 20MHz. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 2 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Output Specifications Parameter Module Min Typical Max 2.450 1.764 1.470 1.176 0.882 2.500 1.800 1.500 1.200 0.900 2.550 1.836 1.530 1.224 0.918 2.5V 1.8V 1.5V 1.2V 0.9V 3 3 3 1 1 10 10 10 5 5 2.5V 1.8V 1.5V 1.2V 0.9V 3 3 3 1 1 10 10 10 5 5 2.5V 1.8V 1.5V 1.2V 0.9V 20 15 15 10 8 40 30 30 20 15 2.5V 1.8V 1.5V 1.2V 0.9V 26 21 21 12 10 60 50 50 30 25 2.5V 1.8V 1.5V 1.2V 0.9V 40 40 40 40 40 80 80 80 80 70 Output Ripple and Noise 2 All 10 20 mVrms Output Current Range All Iout 0 7 A Output DC Current Limit All Ioutlim 8.4 16 A Shor t Circuit Surge All Ioutsurge 0.08 0.12 A 2s Turn on Time All Ton 7 15 ms Overshoot at Turn On All 0 1 % Output Capacitance All 2200 µF Output Voltage Set Point 1 Symbol Units Vout 2.5V 1.8V 1.5V 1.2V 0.9V V Load Regulation mV Line Regulation Regulation Over Temperature (-40° to +85° C) mV mV Total Output Voltage Regulation mV Output Ripple and Noise 2 mVp-p Cout 0 Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 1. Vin = 3.3V, Iout = full load, Ta = 25° C. 2. 0 - 20MHz, 1µF ceramic cap and 10µF aluminum cap on output. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 3 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Output Specifications Parameter Module Transient Response Symbol Min Typical Max Units 120 180 mV 40 80 µs 120 180 mV 40 80 µs 120 180 mV 40 80 µs 120 180 mV 40 80 µs 100 150 mV 40 80 µs 100 150 mV 40 80 µs 50 100 mV 40 80 µs 50 100 mV 40 80 µs 50 100 mV 40 80 µs 50 100 mV 40 80 µs 3 ∆V 50% to 100% of Max Load Settling Time Ts 2.5V ∆V 100% to 50% of Max Load Settling Time Ts Transient Response 3 ∆V 50% to 100% of Max Load Settling Time Ts 1.8V ∆V 100% to 50% of Max Load Settling Time Ts Transient Response 3 ∆V 50% to 100% of Max Load Settling Time Ts 1.5V ∆V 100% to 50% of Max Load Settling Time Ts Transient Response 3 ∆V 50% to 100% of Max Load Settling Time Ts 1.2V ∆V 100% to 50% of Max Load Settling Time Ts Transient Response 3 ∆V 50% to 100% of Max Load Settling Time Ts 0.9V ∆V 100% to 50% of Max Load Settling Time Ts Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 3. di/dt = 0.5A/1µS, Ta = 25° C without external load capacitance. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 4 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C General Specifications Parameter Module Symbol Min Typical 90 86 84 81 78 92 88 86 83 80 250 300 Max Units η Efficiency1 % 2.5V 1.8V 1.5V 1.2V 0.9V Switching Frequency All Output Voltage Trim Range2 Fsw 1.8V Weight 50 340 kHz 146 % 5 All g 1. Vin=3.3V, full load and Ta=25° C. 2. See graphs on page 9. Control Specifications Parameter Remote On/Off 3 Module Symbol All Vouten Min Typical Max Units V Signal Low (Unit Off) All -0.3 1 V Signal High (Unit On) All 1.8 3.6 V 3. With remote on/off pin 1 open, the module is on. Note: On/off pin designed to work with an open collector/drain switch. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 5 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Efficiency Data MODULE 1.8V 100% 95% 100% 95% 90% 85% 80% 75% 70% 65% 60% 90% 85% EFFICIENCY EFFICIENCY MODULE 2.5V 3 3.3 3.6 3 80% 75% 70% 3.3 3.6 65% 60% 0.7 1.8 3.5 5.3 7.0 0.7 1.8 3.5 5.3 7.0 OUTPUT CURRENT OUTPUT CURRENT MODULE 1.5V 95% EFFICIENCY 90% 85% 80% 3 75% 3.3 70% 3.6 65% 60% 55% 0.7 1.8 3.5 5.3 7.0 OUTPUT CURRENT MODULE 0.9V 90% 85% 80% 75% 70% 65% 60% 55% 50% 3 3.3 3.6 EFFICIENCY EFFICIENCY MODULE 1.2V 95% 90% 85% 3 80% 75% 70% 65% 3.3 3.6 60% 55% 0.7 1.8 3.5 5.3 7.0 OUTPUT CURRENT ©2006 Bel Fuse Inc. 0.7 1.8 3.5 5.3 7.0 OUTPUT CURRENT Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 6 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A POWER PRODUCTS BP06xRAH-07C Ripple and Noise 1µF ceramic cap and 10µF aluminum cap added at the output. Ripple and noise at full load and 3.3Vdc input, 1.8Vdc output and Ta=25° C Transient Response Transient response: di/dt = 0.5A/µS, no external load capacitance Vout=1.8V 50% to 100% load transients at 3.3V input and Ta=25° C Vout=1.8V 100% to 50% load transients at 3.3V input and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 7 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Thermal Considerations SRAH-07C VRAH-07C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 8 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A POWER PRODUCTS BP06xRAH-07C Output Voltage Set-Point Adjustment Trim Down Test Circuit Trim Up Test Circuit Vo Vo Trim Trim Gnd Gnd Output Voltage Set-Point Adjustment xRAH-07C250 Trim Resistor Calculation Rtrim down = Rtrim up = ( ( 6.4943 – 13.83) Kohm Vo – Vo, adj 3.064 – 10) Kohm Vo, adj – Vo ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 9 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Output Voltage Set-Point Adjustment xRAH-07C180 Trim Resistor Calculation Rtrim down = Rtrim up = ( ( 3.8488 – 18.83) Kohm Vo – Vo, adj 3.064 – 15) Kohm Vo, adj – Vo xRAH-07C150 Trim Resistor Calculation Rtrim down = Rtrim up = ©2006 Bel Fuse Inc. ( ( 1.7874 – 11.7) Kohm Vo – Vo, adj 2.088 – 9.09) Kohm Vo, adj – Vo Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 10 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A POWER PRODUCTS BP06xRAH-07C Output Voltage Set-Point Adjustment xRAH-07C120 Trim Resistor Calculation Rtrim down = Rtrim up = ( ( 0.622 – 4.15) Kohm Vo – Vo, adj 1.232 – 2.61) Kohm Vo, adj – Vo xRAH-07C090 Trim Resistor Calculation Rtrim up = ( 0.3064 – 0.178) Kohm Vo, adj – Vo ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 11 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Output Voltage Set-Point Adjustment Trim Down Test Circuit Trim Up Test Circuit Vo Trim Gnd Vo Trim Gnd Output Voltage Set-Point Adjustment xRAH-07C1A0 Trim Resistor Calculation Rtrim down = Rtrim up = ( ( 3.8488 – 4.091) Kohm Vo – Vo, adj 3.064 – 0.261) Kohm Vo, adj – Vo Note: Default output voltage of SRAH-07C1A0 is 1.8V ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 12 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C Mechanical SRAH-07C Suggested PCB Pad Layout 0.400 [10.16] 0.60 [15.24] 0.050 [1.27] 0.065 [1.65] 0.110 [2.79] 0.855 [21.72] R0.015 [R0.38] typ 0.70 [17.78] R0.008 [R0.20] typ 0.100 [2.54] 0.012 [0.30] 0˚-5˚ 0.004 [0.10] 0.050 [1.27] 0.100 [2.54] 4x 0.400 [10.16] 0.320 [8.13] 0.020 [0.51] 0.055 [1.40] 2x 0.090 [2.29] 2x 0.780 [19.81] Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. Pin Function 1 Remote On/Off 2 +Vin 3 Ground 4 +Vo 5 Trim 6 No Connection 7 No Connection 7 6 1 2 3 4 5 ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 13 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 3.3V Input / 0.9V – 2.5V Output / 7A BP06xRAH-07C 0.700 [17.78] Mechanical VRAH-07C 0.050 [1.27] 0.600 [15.24] 0.265 [6.73] min 0.050 [1.27] 0.100 [2.54] 0.400 [10.16] 0.020 [0.51] 0.308 [7.82] Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. Pin Function 1 Remote On/Off 2 +Vin 3 Ground 4 +Vo 5 Trim 1 2 3 4 5 RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. These parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240ºC. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 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 page 14