S7DB-12B BEL | Alldatasheet
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A 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-12B 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. 12A maximum output is also provided. Standard features include remote on/off, remote sense, 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 applica- tions 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 tuptuO egatloV tupnI egatloV tuptuO.xaM tnerruC tuptuO.xaM rewoP lacipyT ycneiciffE rebmuNtraP V3.3V 5A 21W 6.93% 290 33B21-BD7S V5.2V 5A 21W 0.03% 090 52B21-BD7S V8.1V 5A 21W 6.12% 680 81B21-BD7S V5.1V 5A 21W 0.81% 480 51B21-BD7S V2.1V 5A 21W 4.41% 280 21B21-BD7S
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 2 Input Specifications Absolute Maximum Ratings Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC converter or may permanently damage the device. 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. retemaraP lobmyS niM lacipyT xaM tinU egatloVtupnIsuounitnoCn iV3 .0- 6V egatloVlanimreTelbanEtuptuOn etuoV3 .0- 6V erutarepmeTtneibmAb maT0 4- 58C ° erutarepmeTegarotSr otsT5 5- 001C ° retemaraP eludoM lobmyS niM lacipyT xaM stinU egatloVtupnIgnitarepOl lAn iV5 .455 .5V tnerruCtupnI V3.3 V5.2 V8.1 V5.1 V2.1 niI 2.11 7.8 6.6 5.5 5.4 A tnerruCtupnIdaoLoN llA 05 Am tnerruCtupnIffOetomeR 010 2 Am tnerruCelppiRdetcelfeRtupnI 1 llA 040 8 Am smr )P-P(tnerruCelppiRdetcelfeRtupnI 1 llA 0410 82k pAm I2 tneisnarTtnerruChsurnItl lA 1.02 .0A 2s dlohserhTegatloVnOnruTl lA 3.45 .4V dlohserhTegatloVffOnruTl lA 58.39 4.4V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 3 Output Specifications 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. retemaraP eludoM lobmyS niM lacipyT xaM stinU tnioPteSegatloVtuptuO 1 V3.3 V5.2 V8.1 V5.1 V2.1 tuoV 432.3 54.2 467.1 74.1 671.1 3.3 5.2 8.1 5.1 2.1 663.3 55.2 638.1 35.1 422.1 V noitalugeRdaoL V3.3 V5.2 V8.1 V5.1 V2.1 0.6 0.6 0.6 0.6 0.6 Vm noitalugeReniLl lA 0.25V m erutarepmeTrevOnoitalugeR V3.3 V5.2 V8.1 V5.1 V2.1 Vm noitalugeRegatloVtuptuOlatoT V3.3 V5.2 V8.1 V5.1 V2.1 Vm esioNdnaelppiRtuptuO 2 llA 030 6p -pVm esioNdnaelppiRtuptuO 2 llA 015 2s mrVm egnaRtnerruCtuptuOl lAt uoI0 21A timiLtnerruCCDtuptuOl lAm iltuoI6 .51 03A egruStiucriCtrohS V3.3 V5.2 V8.1 V5.1 V2.1 egrustuoI 52.0 3.0 53.0 54.0 5.0 5.0 6.0 7.0 9.0 A2s emiTnonruTl lAn oT 210 2s m nOnruTtatoohsrevOl lA 0% 3V ecnaticapaCtuptuOl lAt uoC0 0084F µ
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 4 Output Specifications 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. retemaraP eludoM lobmyS niM lacipyT xaM stinU esnopseRtneisnarT 3 ∆ daoLxaMfo%001ot%05V V3.3 090 21V m emiTgniltteSs T 530 7s µ ∆ daoLxaMfo%05ot%001V 090 21V m emiTgniltteSs T 530 7s µ esnopseRtneisnarT 3 ∆ daoLxaMfo%001ot%05V V5.2 090 21V m emiTgniltteSs T 530 7s µ ∆ daoLxaMfo%05ot%001V 090 21V m emiTgniltteSs T 530 7s µ esnopseRtneisnarT 3 ∆ daoLxaMfo%001ot%05V V8.1 090 21V m emiTgniltteSs T 530 7s µ ∆ daoLxaMfo%05ot%001V 090 21V m emiTgniltteSs T 530 7s µ esnopseRtneisnarT 3 ∆ daoLxaMfo%001ot%05V V5.1 090 21V m emiTgniltteSs T 530 7s µ ∆ daoLxaMfo%05ot%001V 090 21V m emiTgniltteSs T 530 7s µ esnopseRtneisnarT 3 ∆ daoLxaMfo%001ot%05V V2.1 090 21V m emiTgniltteSs T 530 7s µ ∆ daoLxaMfo%05ot%001V 090 21V m emiTgniltteSs T 530 7s µ
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 5 Control Specifications General Specifications 1. Vin=5V , full load and Ta=25° C. 2. See graphs on pages 10-12. 3. With remote on/off pin 8 open, the module is on. retemaraP eludoM lobmyS niM lacipyT xaM stinU ycneiciffE 1 V3.3 V5.2 V8.1 V5.1 V2.1 η ycneuqerFgnihctiwS llA wsF 0620 030 43 zHk egnaRmirTegatloVtuptuO 2 llA0 9 011 % noitasnepmoCesneSetomeR llA 01 % thgieWl lA 5.01 g retemaraP eludoM lobmyS niM lacipyT xaM stinU ffO/nOetomeR 3 llAn etuoV V )nOtinU(woLlangiSl lA0 1V )ffOtinU(hgiHlangiSl lA5 .2 5.5V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 6 Efficiency Data Module 3.3V 90% 91% 92% 93% 94% 95% 96% 97% 98% 123456789 1 0 1 1 1 2 1 3 Output Current Efficiency 4.5V 5.0V 5.5V Module 2.5V 87% 88% 89% 90% 91% 92% 93% 94% 95% 96% 97% 123456789 1 0 1 1 1 2 1 3 Output Current Efficiency 4.5V 5.0V 5.5V Module 1.8V 83% 84% 85% 86% 87% 88% 89% 90% 91% 92% 93% 94% 95% 123456789 1 0 1 1 1 2 1 3 Output Current Efficiency 4.5V 5.0V 5.5V Module 1.5V 82% 84% 86% 88% 90% 92% 94% 123456789 1 0 1 1 1 2 1 3 Output Current Efficiency 4.5V 5.0V 5.5V Module 1.2V 79% 81% 83% 85% 87% 89% 91% 93% 123456789 1 0 1 1 1 2 1 3 Output Current Efficiency 4.5V 5.0V 5.5V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 7 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 1µF ceramic cap and 10µF aluminum electrolytic cap added at the output. 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
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 8 Transient Response Transient response: di/dt = 0.5A/µS, no external load capacitance 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 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
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 9 Transient Response Transient response: di/dt = 0.5A/µS, no external load capacitance Vout=1.2V 50% to 100% 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 Vout=1.2V 100% to 50% load transients at 5V input and Ta=25° C Thermal Considerations
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 10 Output Voltage Set-Point Adjustment Vo Tr im Gnd Vo Tr im Gnd Trim Down Test Circuit Trim Up Test Circuit Output Voltage Set-Point Adjustment S7DB-12B330 Trim Resistor Calculation 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj (V) Trim resistor value Rtrim_down(Kohm) 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjus ted output voltage Vo,adj(V) Trim resistor value,Rtrim_up(Kohm) KohmadjVoVoR downtrim )82.6, 964.7(_ −−= KohmVoadjVoupRtrim )65.3, 536.2(_ −−= where, Vo is the nominal output voltage setpoint when trim pin is open ,Vo=3.312V Vo,adj is the adjusted output voltage. Rtrim-up is the resistance required between TRIM and GND. where, Vo is the nominal output voltage setpoint when trim pin is open ,Vo=3.312V Vo,adj is the adjusted output voltage. Rtrim-down is the resistance required between TRIM and Vo.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 11 S7DB-12B250 Trim Resistor Calculation S7DB-12B180 Trim Resistor Calculation Output Voltage Set-Point Adjustment 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj (V) Trim resistor value Rtrim_down(Kohm) 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj(V) Trim resistor value,Rtrim_up(Kohm) KohmadjVoVoR downtrim )8.6, 691.3(_ −−= KohmVoadjVoupRtrim )64.4, 728.1(_ −−= where, Vo is the nominal output voltage setpoint when trim pin is open ,Vo=2.509V Vo,adj is the adjusted output voltage. Rtrim-down is the resistance required between TRIM and Vo. Vo is the nominal output voltage setpoint when trim pin is open ,Vo=2.509V Vo,adj is the adjusted output voltage. Rtrim-up is the resistance required between TRIM and GND. where, 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj (V) Trim resistor value Rtrim_down(Kohm) 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj(V) Trim resistor value,Rtrim_up(Kohm) KohmadjVoVoR downtrim )84.13, 869.3(_ −−= KohmVoadjVoupRtrim )10, 072.3(_ −−= Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.808V Vo,adj is the adjusted output voltage. Rtrim-down is the resistance required between TRIM and Vo. where, Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.808V Vo,adj is the adjusted output voltage. Rtrim-up is the resistance required between TRIM and GND. where,
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 12 S7DB-12B150 Trim Resistor Calculation S7DB-12B120 Trim Resistor Calculation Output Voltage Set-Point Adjustment 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj (V) Trim resistor value Rtrim_down(Kohm) 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj(V) Trim resistor value,Rtrim_up(Kohm) KohmadjVoVoR downtrim )71.11, 716.2(_ −−= KohmVoadjVoupRtrim )87.7, 072.3(_ −−= Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.507V Vo,adj is the adjusted output voltage. Rtrim-down is the resistance required between TRIM and Vo. Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.507V Vo,adj is the adjusted output voltage. Rtrim-up is the resistance required between TRIM and GND. where, where, 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj (V) Trim resistor value Rtrim_down(Kohm) 30.01 60.01 90.01 120.01 150.01 180 210 240 270 Adjusted output voltage Vo,adj(V) Trim resistor value,Rtrim_up(Kohm) KohmadjVoVoR downtrim )48.8, 562.1(_ −−= KohmVoadjVoupRtrim )64.4, 072.3(_ −−= Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.207V Vo,adj is the adjusted output voltage. Rtrim-down is the resistance required between TRIM and Vo. Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.207V Vo,adj is the adjusted output voltage. Rtrim-up is the resistance required between TRIM and GND. where, where,
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 ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 POWER PRODUCTS NON-ISOLATED DC/DC CONVERTERS BP02S7DB-12B 5V Input / 1.2V – 3.3V Output / 12A page 13 Mechanical Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. 1.22 [30.99] 0.394 [10.01] 0.67 [17.00] 0.985 [25.02] 0.197 [5.00] 0.102 [2.59] 0.345 [8.76] 0.010 [0.25] 0.827 [21.01] 2X 0.050 [1.27] 2X 0.079 [1.99] 0.004 [0.10] 0˚- 5˚ 0.100 [2.54]0.120 [3.05] 0.197 [5.00] 0.895 [22.73] Suggested PCB Pad Layout 12 34 5 6 12 11 10 98 7 niP noitcnuF 1d nuorG 2d nuorG 3d nuorG 4d nuorG 5n iV+ 6n iV+ 7m irT 8f fO/nOetomeR 9) +(esneSetomeR 01o V+ 11o V+ 21o V+