SRDB-08B

NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A SRDB-08B 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-08B RoHS Compliant Description The Bel SRDB-08B modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 5V source. These converters are available in a range of output voltages from 1.2V to 3.3V. They are packaged in a compact, low profile, surface mount DIP package for ease of layout and space savings. 8A 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 5V 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 3.3V 2.5V 1.8V 1.5V 1.2V Input Voltage 5V 5V 5V 5V 5V Max. Output Current 8A 8A 8A 8A 8A Max. Output Power 26.4W 20W 14.4W 12W 9.6W Typical Efficiency 93% 91% 87% 86% 83% Part Number SRDB-08B330 SRDB-08B250 SRDB-08B180 SRDB-08B150 SRDB-08B120 ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A 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 -55 Typical Max 6 6 85 100 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 Module All Symbol Vin Iin Input Current 3.3V 2.5V 1.8V 1.5V 1.2V All 50 4 30 60 0.05 4.3 3.85 8 50 100 0.07 4.5 4.49 7.2 5.6 4.6 3.9 3.0 A Min 4.5 Typical 5 Max 5.5 Units V 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 mA mA mArms mApk A2s V V Note: Input capacitance two 270µF/10V, 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. 06.06 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 5V Input / 1.2V – 3.3V Output / 8A POWER PRODUCTS BP06SRDB-08B Output Specifications Parameter Output Voltage Set Point 1 3.3V 2.5V 1.8V 1.5V 1.2V Load Regulation 3.3V 2.5V 1.8V 1.5V 1.2V Line Regulation Regulation Over Temperature 3.3V 2.5V 1.8V 1.5V 1.2V Total Output Voltage Regulation 3.3V 2.5V 1.8V 1.5V 1.2V Output Ripple and Noise 2 Output Ripple and Noise 2 Output Current Range Output DC Current Limit Shor t Circuit Surge 3.3V 2.5V 1.8V 1.5V 1.2V Turn on Time Overshoot at Turn On Output Capacitance All All All Cout 0 Ton All All All All Iout Ioutlim Ioutsurge 0.1 0.3 0.4 0.5 0.6 12 0 0.3 0.6 0.8 1.0 1.2 20 3 3200 ms % µF 0 10.4 30 10 55 45 38 33 33 50 20 8 20 mVp-p mVrms A A A 2s 20 15 12 10 10 40 30 25 20 20 mV All 4.0 4.0 3.0 3.0 3.0 2.0 10 10 8 8 8 5 mV mV Module Symbol Vout 3.234 2.45 1.764 1.47 1.176 3.3 2.5 1.8 1.5 1.2 3.366 2.55 1.836 1.53 1.224 mV Min Typical Max Units V Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 1. Vin = 5V, 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. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Output Specifications Parameter Transient Response 3 Module Symbol Min Typical Max Units ∆V 50% to 100% of Max Load Settling Time 3.3V ∆V 100% to 50% of Max Load Settling Time Transient Response 3 90 Ts 25 90 Ts 25 120 50 120 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 90 Ts 25 90 Ts 25 120 50 120 50 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 70 Ts 25 70 Ts 25 100 50 100 50 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 70 Ts 25 70 Ts 25 100 50 100 50 mV µs mV µs ∆V 50% to 100% of Max Load Settling Time 1.2V ∆V 100% to 50% of Max Load Settling Time Ts Ts 70 25 70 25 100 50 100 50 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. 06.06 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 5V Input / 1.2V – 3.3V Output / 8A POWER PRODUCTS BP06SRDB-08B General Specifications Parameter Efficiency1 3.3V 2.5V 1.8V 1.5V 1.2V Switching Frequency All Fsw Module Symbol η 90 88 84 83 80 260 93 91 87 86 83 300 340 kHz % Output Voltage Trim Range2 3.3V 2.5V 1.8V 1.5V 1.2V All All 10.5 70 70 90 90 90 110 110 120 120 110 10 % g Min Typical Max Units % Remote Sense Compensation Weight 1. Vin=5.0V, full load and Ta=25° C. 2. See graphs on pages 12-14. Control Specifications Parameter Remote On/Off 3 Signal Low (Unit On) Signal High (Unit Off) Module All All All Symbol Vouten 0 2.5 1 5.5 Min Typical Max Units V V V 3. With remote on/off pin 8 open, the module is on. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Efficiency Data Module 3.3V 97.0% 96.0% 95.0% 94.0% 93.0% 92.0% 91.0% 90.0% 1 2 3 4 5 6 7 8 4.5V 5.0V 5.5V Module 2.5V 95.0% 94.0% 93.0% 92.0% 91.0% 90.0% 89.0% 88.0% 87.0% 1 2 3 4 5 6 7 8 4.5V 5.0V 5.5V Module 1.8V 94.0% 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 1 2 3 4 5 6 7 8 4.5V 5.0V 5.5V ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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 5V Input / 1.2V – 3.3V Output / 8A POWER PRODUCTS BP06SRDB-08B Efficiency Data Module 1.5V 92.0% 91.0% 90.0% 89.0% 88.0% 87.0% 86.0% 85.0% 84.0% 1 2 3 4 5 6 7 8 4.5V 5.0V 5.5V Module 1.2V 90.0% 88.0% 86.0% 84.0% 82.0% 1 2 3 4 5 6 7 8 4.5V 5.0V 5.5V ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Ripple and Noise Ripple and noise at full load and 5Vdc input, 3.3Vdc output and Ta=25° C Ripple and noise at full load and 5Vdc input, 2.5Vdc output and Ta=25° C Ripple and noise at full load and 5Vdc input, 1.8Vdc output and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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 5V Input / 1.2V – 3.3V Output / 8A POWER PRODUCTS BP06SRDB-08B Ripple and Noise Ripple and noise at full load and 5Vdc input, 1.5Vdc output and Ta=25° C Ripple and noise at full load and 5Vdc input, 1.2Vdc output and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Transient Response Transient response: di/dt = 0.5A/µS Vout=3. 3V 50% to 100% load transients at 5V input and Ta=25° C Vout=3.3V 100% to 50% load transients at 5V input and Ta=25° C Vout=2.5V 50% to 100% load transients at 5V input and Ta=25° C Vout=2.5V 100% to 50% load transients at 5V input and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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 5V Input / 1.2V – 3.3V Output / 8A POWER PRODUCTS BP06SRDB-08B Transient Response Transient response: di/dt = 0.5A/µS Vout=1.8V 50% to 100% load transients at 5V input and Ta=25° C Vout=1.8V 100% to 50% load transients at 5V input and Ta=25° C Vout=1.5V 50% to 100% load transients at 5V input and Ta=25° C Vout=1.5V 100% to 50% load transients at 5V input and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Transient Response Transient response: di/dt = 0.5A/µS Vout=1.2V 50% to 100% load transients at 5V input and Ta=25° C Vout=1.2V 100% to 50% load transients at 5V input and Ta=25° C Thermal Considerations 100LFM 200LFM 300LFM Derating Curve 8 Output Current (A) 6 4 Natural Convection 2 0 0 30 60 65 70 75 80 85 Ambient Temperature, Ta (˚C) Output Current vs. Local Ambient Temperature and Air Velocity ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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 5V Input / 1.2V – 3.3V Output / 8A POWER PRODUCTS BP06SRDB-08B Output Voltage Set-Point Adjustment Trim Down Test Circuit Vo Trim Up Test Circuit Vo Trim Trim Gnd Gnd SRDB-08B330 Trim Resistor Calculation Trim resistor value Rtrim down (Kohm) 270 240 210 180 Rtrim down = ( 7.964 – 6.82) Kohm Vo – Vo, adj 150.01 120.01 90.01 60.01 30.01 0.01 2.31 2.41 2.51 2.61 2.71 2.8 2.9 3 3.1 3.2 3.3 Adjusted Output Voltage Vo,adj (V) Trim resistor value Rtrim up (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 3.6 3.63 Rtrim up = ( 2.536 – 3.65) Kohm Vo, adj – Vo Adjusted Output Voltage Vo,adj (V) ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 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-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Output Voltage Set-Point Adjustment Trim resistor value Rtrim down (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 1.75 1.83 1.9 1.98 2.05 2.13 2.2 2.27 2.35 2.42 2.5 SRDB-08B250 Trim Resistor Calculation Rtrim down = ( 3.691 – 4.12) Kohm Vo – Vo, adj Adjusted Output Voltage Vo,adj (V) 270 Trim resistor value Rtrim up (Kohm) 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 2.5 2.52 2.55 2.58 2.6 2.63 2.65 2.67 2.7 2.73 2.75 Rtrim up = ( 1.728 – 1.96) Kohm Vo, adj – Vo Adjusted Output Voltage Vo,adj (V) Trim resistor value Rtrim down (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 1.62 1.64 1.66 1.67 1.69 1.71 1.73 1.75 1.76 1.78 1.8 SRDB-08B180 Trim Resistor Calculation Rtrim down = ( 1.52 – 4.12) Kohm Vo – Vo, adj Adjusted Output Voltage Vo,adj (V) Trim resistor value Rtrim up (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 1.8 1.84 1.87 1.91 1.94 1.98 2.02 2.05 2.09 2.12 2.16 Rtrim up = ( 1.208 – 2.61) Kohm Vo, adj – Vo Adjusted Output Voltage Vo,adj (V) ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 14 NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Output Voltage Set-Point Adjustment 270 Trim resistor value Rtrim down (Kohm) POWER PRODUCTS BP06SRDB-08B 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 1.35 1.37 1.38 1.4 1.41 1.43 1.44 1.46 1.47 1.49 1.5 SRDB-08B150 Trim Resistor Calculation Rtrim down = ( 0.749 – 3.21) Kohm Vo – Vo, adj Adjusted Output Voltage Vo,adj (V) Trim resistor value Rtrim up (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 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 = ( 0.848 – 2.15) Kohm Vo, adj – Vo Trim resistor value Rtrim down (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 1.08 1.09 1.1 1.12 1.13 1.14 1.15 1.16 1.18 1.19 1.2 Adjusted Output Voltage Vo,adj (V) SRDB-08B120 Trim Resistor Calculation Rtrim down = ( 1.562 – 8.48) Kohm Vo – Vo, adj Trim resistor value Rtrim up (Kohm) 270 240 210 180 150.01 120.01 90.01 60.01 30.01 0.01 1.2 1.21 1.22 1.24 1.25 1.26 1.27 1.28 1.3 1.31 1.32 Adjusted Output Voltage Vo,adj (V) Rtrim up = ( 3.064 – 4.64) Kohm Vo, adj – Vo ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 15 POWER PRODUCTS BP06SRDB-08B NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 8A Mechanical 0.827 [21.00] 0.102 [2.60] 0.669 [17.00] 0.118 [3.00] 0.197 [5.00] 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 0.079 [2.00] 0.345 [8.75] 1.22 [31.00] 12 11 10 9 8 7 123456 Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. 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. 06.06 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 16