NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A POWER PRODUCTS BP02S7DB-07A S7DB-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 Description The Bel S7DB-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 Input Voltage Max. Output Current Max. Output Power Typical Efficiency Part Number 5.0V 12V 7A 35.0W 92% S7DB-07A500 3.3V 12V 7A 23.1W 90% S7DB-07A330 2.5V 12V 7A 17.5W 88% S7DB-07A250 1.8V 12V 7A 12.6W 83% S7DB-07A180 1.5V 12V 7A 10.5W 82% S7DB-07A150 1.2V 12V 7A 8.4W 81% S7DB-07A120 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Absolute Maximum Ratings Parameter Max Unit -0.3 15 V Vouten -0.3 15.3 V Ambient Temperature Tamb 0 70 °C Storage Temperature Tstor -40 100 °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 Typical Max Units All Vin 10.8 12 13.2 V A Iin Input Current 4.0 2.6 2.0 1.7 1.4 1.3 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V mA No Load Input Current 50 45 35 30 30 30 65 60 50 45 45 45 1 4 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 20 15 12 12 12 12 30 25 25 20 20 20 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 70 50 45 35 35 35 120 100 100 60 60 60 0.08 0.16 A2s 10.4 V 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Remote Off Input Current Input Reflected Ripple Current1 mA mArms Input Reflected Ripple Current (P-P)1 mApk I2t Inrush Current Transient Turn On Voltage Threshold Turn Off Voltage Threshold 8.2 V 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. ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A Output Specifications Parameter BP02S7DB-07A Module Min Typical Max 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 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 15 10 9 9 9 9 30 16.5 15 15 15 15 All 3 10 Output Voltage Set Point 1 Symbol Vout 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V V Load Regulation Line Regulation Units mV Regulation Over Temperature mV mV 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 50 33 25 18 15 12 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 90 59.5 50 43 40 37 Total Output Voltage Regulation mV Output Ripple and Noise 2 mVp-p 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 75 60 60 60 60 60 125 100 100 100 100 100 Output Ripple and Noise 2 All 15 30 mVrms Output Current Range All Iout 0 7 A Output DC Current Limit All Ioutlim 9.1 12 16 A 1.2 1.0 0.9 0.7 0.7 0.6 1.7 1.5 1.4 1.2 1.2 1.1 45 30 30 30 30 30 75 50 50 50 50 50 A2s Ioutsurge Shor t Circuit Surge 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Turn on Time Ton ms 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Overshoot at Turn On All Output Capacitance All Cout 0 3 % 3500 µF 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. ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Output Specifications Parameter Module Symbol Min Typical Max Units 125 250 mV 25 50 µs 125 250 mV 25 50 µs 100 165 mV 25 50 µs 100 165 mV 25 50 µs 100 150 mV 25 50 µs 100 150 mV 25 50 µs 100 150 mV 30 70 µs 100 150 mV 30 70 µs 100 150 mV 30 70 µs 100 150 mV 30 70 µs 110 150 mV 30 70 µs 110 150 mV 30 70 µs Transient Response 3 ∆V 50% to 100% of Max Load Settling Time Ts 5.0V ∆V 100% to 50% of Max Load Settling Time Ts Transient Response 3 ∆V 50% to 100% of Max Load Settling Time Ts 3.3V ∆V 100% to 50% of Max Load Settling Time Ts Transient Response 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 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. ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A General Specifications Parameter Module Symbol Min Typical 89 87 85 80 79 78 92 90 88 83 82 81 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 285 280 238 180 180 180 355 330 280 210 210 210 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 90 70 70 90 90 90 Max Units η Efficiency1 % 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Switching Frequency kHz Fsw 425 380 322 240 240 240 Output Voltage Trim Range2 % Remote Sense Compensation All Weight All 110 110 110 120 120 110 % 10 10.8 g 1. Vin=12V, full load and Ta=25° C. 2. See graphs on pages 10-13. Control Specifications Parameter Remote On/Off 3 Module Symbol All Vouten Min Typical Max Units V Signal Low (Unit Off) All 0 1 V Signal High (Unit On) All 2.5 13.2 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. ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Efficiency Data Module 3.3V Module 5.0V 94% Efficiency 92% 10.8v 12.0v 90% 13.2V 88% 86% 84% 1 2 3 4 5 6 Output Current 7 94% 92% 90% 88% 86% 84% 82% 80% 78% 10.8V 12.0V 13.2V 1 8 2 3 4 12.0V 13.2V Efficiency Efficiency 10.8V 85% 80% 75% 8 3 4 5 6 Output Current 7 90% 88% 86% 84% 82% 80% 78% 76% 74% 10.8V 12.0V 13.2V 1 8 2 3 4 5 6 7 8 Output Current Module 1.5V Module 1.2V 90% 10.8V 84% 12.0V 13.2V 79% 74% Efficiency 89% Efficiency 7 Module 1.8V 90% 2 6 Output Current Module 2.5V 1 5 10.8V 85% 12.0V 13.2V 80% 75% 1 2 3 4 5 6 7 8 Output Current ©2002 Bel Fuse Inc. 1 2 3 4 5 6 7 8 Output Current Specifications subject to change without notice. 09.02 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 POWER PRODUCTS BP02S7DB-07A Ripple and Noise 0.1µF ceramic cap and 10µF aluminum electrolytic cap added at the output. 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 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A 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 Vout=2.5V 100% to 50% load transients at 12V input and Ta=25° C ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 POWER PRODUCTS BP02S7DB-07A Transient Response 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 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 9 NON-ISOLATED DC/DC CONVERTERS POWER PRODUCTS 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Thermal Considerations Derating Curve 100LFM 7 Output Current (A) 6 5 4 3 2 Natural Convection 1 0 0 20 10 30 40 60 50 70 Ambient Temperature, Ta (˚C) Output Current vs. Local Ambient Temperature and Air Velocity Output Voltage Set-Point Adjustment Trim Down Test Circuit Trim Up Test Circuit Vo Trim Gnd ©2002 Bel Fuse Inc. Vo Trim Gnd Specifications subject to change without notice. 09.02 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 POWER PRODUCTS 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Trim resistor value Rtrim_down(Kohm) Output Voltage Set-Point Adjustment S7DB-07A500 Trim Resistor Calculation Rtrim down = ( 10.52 – 4.55) Kohm Vo – Vo, adj 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 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 5.5 100 Rtrim up = ( Trim resistor value,Rtrim_up(Kohm) 90.1 2 – 2.05) Kohm Vo, adj – Vo 80.2 70.3 60.4 50.5 40.6 30.7 20.8 10.9 Trim resistor value Rtrim_down(Kohm) 1 45 40.01 S7DB-07A330 Trim Resistor Calculation 35.02 30.02 Rtrim down = 25.03 20.03 ( 5.08 – 4.55) Kohm Vo – Vo, adj 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 Trim resistor value,Rtrim_up(Kohm) 100 90.1 80.2 70.3 60.4 Rtrim up = 50.5 ( 3.175 – 2.05) Kohm Vo, adj – Vo 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 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A S7DB-07A250 Trim Resistor Calculation Rtrim down = ( 3.926 – 4.64) Kohm Vo – Vo, adj Trim resistor value Rtrim_down(Kohm) Output Voltage Set-Point Adjustment 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 2.52 2.55 1.98 2.05 2.13 2.2 2.27 2.35 Adjusted output voltage Vo,adj (V) 2.42 2.5 2.58 2.6 2.63 2.65 2.67 Adjusted output voltage Vo,adj(V) 2.73 2.75 Rtrim up = Trim resistor value,Rtrim_up(Kohm) 100 4.02 – 1.47) Kohm Vo, adj – Vo ( 91 82 73 64 55 46 37 28 19 10 2.5 2.7 Trim resistor value Rtrim_down(Kohm) 150 135.5 S7DB-07A180 Trim Resistor Calculation 121 106.5 92 77.5 Rtrim down = 63 48.5 3.869 – 11.34) Kohm Vo – Vo, adj 34 19.5 5 1.62 Trim resistor value,Rtrim_up(Kohm) ( 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 90.02 80.04 70.06 60.08 50.1 Rtrim up = 40.12 ( 3.072 – 7.5) Kohm Vo, adj – Vo 30.14 20.16 10.18 0.2 1.8 1.84 ©2002 Bel Fuse Inc. 1.87 1.91 1.94 1.98 2.02 2.05 Adjusted output voltage Vo,adj(V) 2.09 2.12 2.16 Specifications subject to change without notice. 09.02 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 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Output Voltage Set-Point Adjustment Trim resistor value Rtrim_down(Kohm) 200 S7DB-07A150 Trim Resistor Calculation Rtrim down = ( 2.704 – 11.34) Kohm Vo – Vo, adj 180.5 161 141.5 122 102.5 83 63.5 44 24.5 Rtrim up = ( Trim resistor value,Rtrim_up(Kohm) 5 1.35 3.072 – 7.5) Kohm Vo, adj – Vo 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 1.59 1.62 1.65 1.68 1.71 Adjusted output voltage Vo,adj(V) 1.77 1.8 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 1.74 Trim resistor value Rtrim_down(Kohm) S7DB-07A120 Trim Resistor Calculation 90.01 80.02 70.03 60.04 Rtrim down = 50.05 ( 0.874 – 6.58) Kohm Vo – Vo, adj 40.06 30.07 20.08 10.09 0.1 1.08 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 Trim resistor value,Rtrim_up(Kohm) 200 180.1 160.2 140.3 Rtrim up = 120.4 100.5 ( 1.728 – 4.42) Kohm Vo, adj – Vo 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 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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 NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.2V – 5.0V Output / 7A BP02S7DB-07A Mechanical 1.22 [30.99] Suggested PCB Pad Layout 0.394 [10.01] 0.197 [5.00] 0.895 [22.73] 0.67 [17.00] 0.100 [2.54] 0.120 [3.05] 0˚- 5˚ 0.004 [0.10] 5X 0.197 [5.00] 6X 0.102 [2.59] 0.985 [25.02] Pin Function 1 Ground 2 Ground 3 Ground 4 Ground 5 +Vin 6 +Vin 7 Trim 8 Remote On/Off 9 Remote Sense (+) 10 +Vo 11 +Vo 12 +Vo 0.345 [8.76] 0.010 [0.25] 2X 0.050 [1.27] 2X 0.079 [1.99] 0.827 [21.01] Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. 12 11 10 9 8 7 3 4 5 6 1 2 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 09.02 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