SRDB-07A180

NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A SRDB-07A 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 Remote sense POWER PRODUCTS BP06SRDB-07A RoHS Compliant Description The Bel SRDB-07A modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 12V source. These converters are available in a range of output voltages from 1.2V to 5.0V. They are packaged in a compact, low profile, surface mount DIP package for ease of layout and space savings. 7A maximum output is also provided. Standard features include remote on/off, over current and short circuit protection, UVLO and output voltage adjust. These products may be used almost anywhere low voltage silicon is employed and a 12V 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 Part Number Selection Output Voltage 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Input Voltage 12V 12V 12V 12V 12V 12V Max. Output Current 7A 7A 7A 7A 7A 7A Max. Output Power 35.0W 23.1W 17.5W 12.6W 10.5W 8.4W Typical Efficiency 92% 90% 88% 83% 82% 81% Part Number SRDB-07A500 SRDB-07A330 SRDB-07A250 SRDB-07A180 SRDB-07A150 SRDB-07A120 ©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 POWER PRODUCTS BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V 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 0 -40 Typical Max 15 15.3 70 100 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 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V No Load Input Current 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Remote Off Input Current Input Reflected Ripple Current1 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Input Reflected Ripple Current (P-P)1 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V I2t Inrush Current Transient Turn On Voltage Threshold Turn Off Voltage Threshold 8.2 70 50 45 35 35 35 0.08 120 100 100 60 60 60 0.16 10.4 A2s V V 20 15 12 12 12 12 30 25 25 20 20 20 mApk 50 45 35 30 30 30 1 65 60 50 45 45 45 4 mA mArms Module All Symbol Vin Iin 4.0 2.6 2.0 1.7 1.4 1.3 mA Min 10.8 Typical 12 Max 13.2 Units V A Note: Input capacitance two 270µF/16V, ESR = 0.018 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 12V Input / 1.2V – 5.0V Output / 7A Output Specifications Parameter Output Voltage Set Point 1 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Load Regulation 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Line Regulation Regulation Over Temperature 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Total Output Voltage Regulation 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Output Ripple and Noise 2 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Output Ripple and Noise 2 Output Current Range Output DC Current Limit Shor t Circuit Surge 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Turn on Time 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Overshoot at Turn On Output Capacitance All All Cout 0 Ton 45 30 30 30 30 30 75 50 50 50 50 50 3 3500 % µF All All All Iout Ioutlim Ioutsurge 1.2 1.0 0.9 0.7 0.7 0.6 1.7 1.5 1.4 1.2 1.2 1.1 ms 0 9.1 12 75 60 60 60 60 60 15 125 100 100 100 100 100 30 7 16 mVrms A A A2s 90 59.5 50 43 40 37 mVp-p 50 33 25 18 15 12 mV All 15 10 9 9 9 9 3 30 16.5 15 15 15 15 10 mV mV Module Symbol Vout 4.900 3.247 2.460 1.771 1.476 1.181 5.00 3.30 2.50 1.80 1.50 1.20 5.100 3.353 2.540 1.829 1.524 1.219 mV Min Typical Max Units V POWER PRODUCTS BP06SRDB-07A Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 1. Vin = 12V, Iout = full load, Ta = 25° C. 2. 0 - 20MHz, 0.1µF 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 BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A Output Specifications Parameter Transient Response 3 ∆V 50% to 100% of Max Load Settling Time 5.0V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 ∆V 50% to 100% of Max Load Settling Time 3.3V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 Module Symbol Min Typical Max Units 125 Ts 25 125 Ts 25 250 50 250 50 mV µs mV µs 100 Ts 25 100 Ts 25 165 50 165 50 mV µs mV µs ∆V 50% to 100% of Max Load Settling Time 2.5V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 ∆V 50% to 100% of Max Load Settling Time 1.8V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 ∆V 50% to 100% of Max Load Settling Time 1.5V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 ∆V 50% to 100% of Max Load Settling Time 1.2V ∆V 100% to 50% of Max Load Settling Time Ts Ts Ts Ts Ts Ts Ts Ts 100 25 100 25 150 50 150 50 mV µs mV µs 100 30 100 30 150 70 150 70 mV µs mV µs 100 30 100 30 150 70 150 70 mV µs mV µs 110 30 110 30 150 70 150 70 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 with a 220µF Tantalum cap at 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 4 NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A POWER PRODUCTS BP06SRDB-07A General Specifications Parameter Efficiency1 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Switching Frequency 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Output Voltage Trim Range2 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Remote Sense Compensation Weight All All 10.8 90 70 70 90 90 90 110 110 110 120 120 110 10 % g Fsw 285 280 238 180 180 180 355 330 280 210 210 210 425 380 322 240 240 240 % Module Symbol η 89 87 85 80 79 78 92 90 88 83 82 81 kHz Min Typical Max Units % 1. Vin=12V, full load and Ta=25° C. 2. See graphs on pages 10-13. Control Specifications Parameter Remote On/Off 3 Signal Low (Unit Off) Signal High (Unit On) Module All All All Symbol Vouten 0 2.5 1 13.2 Min Typical Max Units V V V 3. With remote on/off pin 8 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 BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A Efficiency Data Module 5.0V 94% 92% Efficiency 90% 88% 86% 84% 1 2 3 4 5 6 Output Current 7 8 10.8v 12.0v 13.2V 94% 92% 90% 88% 86% 84% 82% 80% 78% 1 2 3 Module 3.3V 10.8V 12.0V 13.2V 4 5 6 7 8 Output Current Module 2.5V 90% Efficiency 85% 80% 75% 1 2 3 4 5 6 Output Current 7 8 10.8V 12.0V 13.2V Efficiency 90% 88% 86% 84% 82% 80% 78% 76% 74% 1 2 3 Module 1.8V 10.8V 12.0V 13.2V 4 5 6 7 8 Output Current Module 1.5V 89% Efficiency Module 1.2V 90% Efficiency 10.8V 12.0V 13.2V 84% 79% 74% 1 2 3 4 5 6 7 8 Output Current 85% 80% 75% 1 2 3 4 5 6 7 8 Output Current 10.8V 12.0V 13.2V ©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 NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A Ripple and Noise 0.1µF ceramic cap and 10µF aluminum electrolytic cap added at the output. POWER PRODUCTS BP06SRDB-07A Ripple and noise at full load and 12Vdc input, 5.0Vdc output and Ta=25° C Ripple and noise at full load and 12Vdc input, 3.3Vdc output and Ta=25° C Ripple and noise at full load and 12Vdc input, 2.5Vdc output and Ta=25° C Ripple and noise at full load and 12Vdc input, 1.8Vdc output and Ta=25° C Ripple and noise at full load and 12Vdc input, 1.5Vdc output and Ta=25° C Ripple and noise at full load and 12Vdc input, 1.2Vdc output 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 BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A Transient Response Transient response: di/dt = 0.5A/µS, external load capacitance Co=220µF aluminum cap at output Vout=5.0V 50% to 100% load transients at 12V input and Ta=25° C Vout=5.0V 100% to 50% load transients at 12V input and Ta=25° C Vout=3.3V 50% to 100% load transients at 12V input and Ta=25° C Vout=3.3V 100% to 50% load transients at 12V input and Ta=25° C Vout=2.5V 50% to 100% load transients at 12V input and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Vout=2.5V 100% to 50% load transients at 12V input and Ta=25° C 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 12V Input / 1.2V – 5.0V Output / 7A Transient Response POWER PRODUCTS BP06SRDB-07A Transient response: di/dt = 0.5A/µS, external load capacitance Co=470µF (Tantalum capacitor) Vout=1.8V 50% to 100% load transients at 12V input and Ta=25° C Vout=1.8V 100% to 50% load transients at 12V input and Ta=25° C Vout=1.5V 50% to 100% load transients at 12V input and Ta=25° C Vout=1.5V 100% to 50% load transients at 12V input and Ta=25° C Vout=1.2V 50% to 100% load transients at 12V input and Ta=25° C Vout=1.2V 100% to 50% load transients at 12V 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 9 POWER PRODUCTS BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A Thermal Considerations Derating Curve 100LFM 7 6 Output Current (A) 5 4 3 2 1 0 0 10 20 30 40 50 60 70 Natural Convection Ambient Temperature, Ta (˚C) Output Current vs. Local Ambient Temperature and Air Velocity Output Voltage Set-Point Adjustment Trim Down Test Circuit Vo Trim Up Test Circuit Vo Trim Trim Gnd Gnd ©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 12V Input / 1.2V – 5.0V Output / 7A POWER PRODUCTS BP06SRDB-07A Output Voltage Set-Point Adjustment SRDB-07A500 Trim Resistor Calculation Trim resistor value Rtrim_down(Kohm) 45 40.01 35.02 30.02 25.03 20.03 15.04 10.04 5.04 0.05 3.5 3.65 3.8 3.95 4.1 4.25 4.4 4.55 Adjusted output voltage Vo,adj (V) 4.7 4.85 5 Rtrim down = ( 10.52 – 4.55) Kohm Vo – Vo, adj 100 90.1 Trim resistor value,Rtrim_up(Kohm) 80.2 70.3 60.4 50.5 40.6 30.7 20.8 10.9 1 5 5.05 5.1 5.15 5.2 5.25 5.3 5.35 Adjusted output voltage Vo,adj(V) 5.4 5.45 5.5 Rtrim up = ( 2 – 2.05) Kohm Vo, adj – Vo Trim resistor value Rtrim_down(Kohm) 45 40.01 35.02 30.02 25.03 20.03 15.04 10.04 5.04 0.05 2.31 2.41 2.51 2.61 2.71 2.8 2.9 3 3.1 Adjusted output voltage Vo,adj (V) 3.2 3.3 SRDB-07A330 Trim Resistor Calculation Rtrim down = ( 5.08 – 4.55) Kohm Vo – Vo, adj 100 Trim resistor value,Rtrim_up(Kohm) 90.1 80.2 70.3 60.4 50.5 40.6 30.7 20.8 10.9 1 3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 Adjusted output voltage Vo,adj(V) 3.56 3.6 3.63 Rtrim up = ( 3.175 – 2.05) 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 BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A Output Voltage Set-Point Adjustment SRDB-07A250 Trim Resistor Calculation Trim resistor value Rtrim_down(Kohm) 45 40.01 35.02 30.02 25.03 20.03 15.04 10.04 5.04 0.05 1.75 1.83 1.9 1.98 2.05 2.13 2.2 2.27 2.35 Adjusted output voltage Vo,adj (V) 2.42 2.5 Rtrim down = ( 3.926 – 4.64) Kohm Vo – Vo, adj 100 Trim resistor value,Rtrim_up(Kohm) 91 82 73 64 55 46 37 28 19 10 2.5 2.52 2.55 2.58 2.6 2.63 2.65 2.67 Adjusted output voltage Vo,adj(V) 2.7 2.73 2.75 Rtrim up = ( 4.02 – 1.47) Kohm Vo, adj – Vo 150 Trim resistor value Rtrim_down(Kohm) 135.5 121 106.5 92 77.5 63 48.5 34 19.5 5 1.62 1.64 1.66 1.67 1.69 1.71 1.73 1.75 1.76 Adjusted output voltage Vo,adj (V) 1.78 1.8 SRDB-07A180 Trim Resistor Calculation Rtrim down = ( 3.869 – 11.34) Kohm Vo – Vo, adj Trim resistor value,Rtrim_up(Kohm) 90.02 80.04 70.06 60.08 50.1 40.12 30.14 20.16 10.18 0.2 1.8 1.84 1.87 1.91 1.94 1.98 2.02 2.05 Adjusted output voltage Vo,adj(V) 2.09 2.12 2.16 Rtrim up = ( 3.072 – 7.5) 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 12 NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A POWER PRODUCTS BP06SRDB-07A Output Voltage Set-Point Adjustment Trim resistor value Rtrim_down(Kohm) 200 180.5 161 141.5 122 102.5 83 63.5 44 24.5 5 1.35 1.37 1.38 1.4 1.41 1.43 1.44 1.46 1.47 Adjusted output voltage Vo,adj (V) 1.49 1.5 SRDB-07A150 Trim Resistor Calculation Rtrim down = ( 2.704 – 11.34) Kohm Vo – Vo, adj Trim resistor value,Rtrim_up(Kohm) 90.02 80.04 70.06 60.08 50.1 40.12 30.14 20.16 10.18 0.2 1.5 1.53 1.56 1.59 1.62 1.65 1.68 1.71 Adjusted output voltage Vo,adj(V) 1.74 1.77 1.8 Rtrim up = ( 3.072 – 7.5) Kohm Vo, adj – Vo SRDB-07A120 Trim Resistor Calculation Trim resistor value Rtrim_down(Kohm) 90.01 80.02 70.03 60.04 50.05 40.06 30.07 20.08 10.09 0.1 1.08 200 Trim resistor value,Rtrim_up(Kohm) 180.1 160.2 140.3 120.4 100.5 80.6 60.7 40.8 20.9 1 1.2 1.21 1.22 1.24 1.25 1.26 1.27 1.28 Adjusted output voltage Vo,adj(V) 1.3 1.31 1.32 1.09 1.1 1.12 1.13 1.14 1.15 1.16 1.18 Adjusted output voltage Vo,adj (V) 1.19 1.2 Rtrim down = ( 0.874 – 6.58) Kohm Vo – Vo, adj Rtrim up = ( 1.728 – 4.42) 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 13 POWER PRODUCTS BP06SRDB-07A NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A 1.22 [30.99] 0.394 [10.01] Suggested PCB Pad Layout Mechanical 0.197 [5.00] 0.67 [17.00] 0.895 [22.73] 0.120 [3.05] 0.100 [2.54] 0˚- 5˚ 0.004 [0.10] 5X 0.197 [5.00] 6X 0.102 [2.59] 0.985 [25.02] 0.345 [8.76] 0.010 [0.25] 2X 0.050 [1.27] 2X 0.079 [1.99] 0.827 [21.01] Pin 1 2 3 4 5 6 7 8 9 10 11 12 Function Ground Ground Ground Ground +Vin +Vin Trim Remote On/Off Remote Sense (+) +Vo +Vo +Vo Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. 12 11 10 9 8 7 1 2 3 4 5 6 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