SRAH-07C180

NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A SRAH-07C / VRAH-07C Series • • • • • • • • • • 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 POWER PRODUCTS BP06xRAH-07C RoHS Compliant 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 • • • • Distributed power architectures Data networking equipment Telecommunications Computers and peripherals Options • Wide range adjustable output Part Number Selection Output Voltage 2.5V 1.8V 1.5V 1.2V 0.9V 0.9V - 2.5V Input Voltage 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V Max. Output Current 7A 7A 7A 7A 7A 7A Max. Output Power 17.5W 12.6W 10.5W 8.4W 6.3W 17.5W Typical Efficiency 92% 88% 86% 83% 80% 92% Part Number Surface Mount SRAH-07C250 SRAH-07C180 SRAH-07C150 SRAH-07C120 SRAH-07C090 SRAH-07C1A0 ©2006 Bel Fuse Inc. Part Number Vertical Mount VRAH-07C250 VRAH-07C180 VRAH-07C150 VRAH-07C120 VRAH-07C090 VRAH-07C1A0 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 POWER PRODUCTS BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A Absolute Maximum Ratings Parameter Continuous Input Voltage Output Enable Terminal Voltage Ambient Temperature Storage Temperature Symbol Vin Vouten Tamb Tstor Min -0.3 -0.3 -40 -40 Typical Max 6 6 85 125 Unit V V °C °C 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 Input Current 2.5V 1.8V 1.5V 1.2V 0.9V No Load Input Current Remote Off Input Current Input Reflected Ripple Current1 Input Reflected Ripple Current (P-P)1 I2t Inrush Current Transient Turn On Voltage Threshold Turn Off Voltage Threshold All All All All All 2.5 2.4 All 7 50 150 0.08 Module All Symbol Vin Iin 6.6 5.3 4.6 3.8 3.0 110 15 80 250 0.16 2.8 mA mA mArms mApk A2s V V Min 3 Typical Max 3.6 Units V A 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 3.3V Input / 0.9V – 2.5V Output / 7A Output Specifications Parameter Output Voltage Set Point 1 2.5V 1.8V 1.5V 1.2V 0.9V Load Regulation 2.5V 1.8V 1.5V 1.2V 0.9V Line Regulation 2.5V 1.8V 1.5V 1.2V 0.9V Regulation Over Temperature (-40° to +85° C) 3 3 3 1 1 10 10 10 5 5 3 3 3 1 1 10 10 10 5 5 Module Symbol Vout 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 Min Typical Max POWER PRODUCTS BP06xRAH-07C Units V mV mV mV 2.5V 1.8V 1.5V 1.2V 0.9V 20 15 15 10 8 40 30 30 20 15 mV 2.5V 1.8V 1.5V 1.2V 0.9V 26 21 21 12 10 60 50 50 30 25 mVp-p 2.5V 1.8V 1.5V 1.2V 0.9V 40 40 40 40 40 10 Iout Ioutlim Ioutsurge Ton 0 8.4 0.08 7 0 Cout 0 80 80 80 80 70 20 7 16 0.12 15 1 2200 mVrms A A A 2s ms % µF Total Output Voltage Regulation Output Ripple and Noise 2 Output Ripple and Noise 2 Output Current Range Output DC Current Limit Shor t Circuit Surge Turn on Time Overshoot at Turn On Output Capacitance All All All All All All All 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 POWER PRODUCTS BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A Output Specifications Parameter Transient Response 3 Module Symbol Min Typical Max Units ∆V 50% to 100% of Max Load Settling Time 2.5V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 120 Ts 40 120 Ts 40 180 80 180 80 mV µs mV µs ∆V 50% to 100% of Max Load Settling Time 1.8V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 120 Ts 40 120 Ts 40 180 80 180 80 mV µs mV µs ∆V 50% to 100% of Max Load Settling Time 1.5V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 100 Ts 40 100 Ts 40 150 80 150 80 mV µs mV µs ∆V 50% to 100% of Max Load Settling Time 1.2V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 50 Ts 40 50 Ts 40 100 80 100 80 mV µs mV µs ∆V 50% to 100% of Max Load Settling Time 0.9V ∆V 100% to 50% of Max Load Settling Time Ts Ts 50 40 50 40 100 80 100 80 mV µs mV µs 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 3.3V Input / 0.9V – 2.5V Output / 7A POWER PRODUCTS BP06xRAH-07C General Specifications Parameter Efficiency1 2.5V 1.8V 1.5V 1.2V 0.9V Switching Frequency Output Voltage Trim Range2 Weight All 1.8V All Fsw Module Symbol η 90 86 84 81 78 250 50 5 92 88 86 83 80 300 340 146 kHz % g Min Typical Max Units % 1. Vin=3.3V, full load and Ta=25° C. 2. See graphs on page 9. Control Specifications Parameter Remote On/Off 3 Signal Low (Unit Off) Signal High (Unit On) Module All All All Symbol Vouten -0.3 1.8 1 3.6 Min Typical Max Units V V 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 POWER PRODUCTS BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A Efficiency Data MODULE 2.5V 100% 95% 90% 85% 80% 75% 70% 65% 60% 0.7 1.8 3.5 5.3 7.0 OUTPUT CURRENT 100% 95% EFFICIENCY MODULE 1.8V EFFICIENCY 3 3.3 3.6 90% 85% 80% 75% 70% 65% 60% 0.7 1.8 3.5 OUTPUT CURRENT 5.3 7.0 3 3.3 3.6 MODULE 1.5V 95% 90% EFFICIENCY 85% 80% 75% 70% 65% 60% 55% 0.7 1.8 3.5 OUTPUT CURRENT 5.3 7.0 3 3.3 3.6 MODULE 1.2V 90% 85% 80% 75% 70% 65% 60% 55% 50% 0.7 1.8 3.5 OUTPUT CURRENT 5.3 7.0 MODULE 0.9V 95% 90% 85% 80% 75% 70% 65% 60% 55% 0.7 1.8 3.5 OUTPUT CURRENT 5.3 7.0 3 3.3 3.6 EFFICIENCY 3 3.3 3.6 ©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 6 EFFICIENCY 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 BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A 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 Output Voltage Set-Point Adjustment Trim Down Test Circuit Vo POWER PRODUCTS BP06xRAH-07C Trim Up Test Circuit Vo Trim Trim Gnd Gnd Output Voltage Set-Point Adjustment xRAH-07C250 Trim Resistor Calculation Rtrim down = ( 6.4943 – 13.83) Kohm Vo – Vo, adj Rtrim up = ( 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 BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A Output Voltage Set-Point Adjustment xRAH-07C180 Trim Resistor Calculation Rtrim down = ( 3.8488 – 18.83) Kohm Vo – Vo, adj Rtrim up = ( 3.064 – 15) Kohm Vo, adj – Vo xRAH-07C150 Trim Resistor Calculation Rtrim down = ( 1.7874 – 11.7) Kohm Vo – Vo, adj Rtrim up = ( 2.088 – 9.09) 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 10 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A Output Voltage Set-Point Adjustment xRAH-07C120 Trim Resistor Calculation POWER PRODUCTS BP06xRAH-07C Rtrim down = ( 0.622 – 4.15) Kohm Vo – Vo, adj Rtrim up = ( 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 POWER PRODUCTS BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A Output Voltage Set-Point Adjustment Trim Down Test Circuit Vo Trim Up Test Circuit Vo Trim Trim Gnd Gnd Output Voltage Set-Point Adjustment xRAH-07C1A0 Trim Resistor Calculation Rtrim down = ( 3.8488 – 4.091) Kohm Vo – Vo, adj Rtrim up = ( 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 3.3V Input / 0.9V – 2.5V Output / 7A POWER PRODUCTS BP06xRAH-07C Mechanical SRAH-07C Suggested PCB Pad Layout 0.400 [10.16] 0.065 [1.65] 0.60 [15.24] 0.050 [1.27] 0.855 [21.72] 0.110 [2.79] 0.70 [17.78] R0.015 [R0.38] typ 0.100 [2.54] R0.008 [R0.20] typ 0.012 [0.30] 0˚-5˚ 0.004 [0.10] 0.050 [1.27] 0.400 [10.16] 0.100 [2.54] 4x 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 1 2 3 4 5 6 7 Function Remote On/Off +Vin Ground +Vo Trim No Connection No Connection 7 6 12345 ©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 POWER PRODUCTS BP06xRAH-07C NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A 0.700 [17.78] Mechanical VRAH-07C 0.600 [15.24] 0.050 [1.27] 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 1 2 3 4 5 Function Remote On/Off +Vin Ground +Vo Trim 12345 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 Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST 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 EUROPE 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