dcp010515db

SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 ��������� �� ������� ����������� ����� ���������� ��!"�# ��� �� FEATURES � Up To 85% Efficiency � Thermal Protection � Device-to-Device Synchronization � Short-Circuit Protection � EN55022 Class B EMC Performance � UL1950 Recognized Component � JEDEC DIP-14 and SOP-14 Packages APPLICATIONS � Point-of-Use Power Conversion � Ground Loop Elimination � Data Acquisition � Industrial Control and Instrumentation � Test Equipment DESCRIPTION The DCP01B series is a family of 1W, unregulated, isolated DC/DC converters. Requiring a minimum of external components and including on-chip device protection, the DCP01B series provides extra features such as output disable and synchronization of switching frequencies. The use of a highly-integrated package design results in highly reliable products with a power density of 40W/in3 (2.4W/cm3). This combination of features and small sizes makes the DCP01B suitable for a wide range of applications. IBIAS Power Stage VOUT ÷ 2 Reset 800kHz Oscillator Watch−dog/ start−up PSU Thermal Shutdown SYNCOUT SYNCIN VS 0V Power Controller IC 0V www.ti.com Copyright  2000−2007, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. !������ �� ���� ��$��%����� �� &������ �� �$ '�(��&����� ����) !����&�� &��$��% �� �'�&�$�&������ '�� �*� ���%� �$ ��+�� �����%���� �������� ,������-) !����&���� '��&�����. ���� ��� ��&�������- ��&���� ������. �$ ��� '���%�����) ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 2 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range unless otherwise noted(1) DCP01B SERIES UNIT 5−V models 7 V Input voltage 15−V models 18 VInput voltage 24−V models 29 V Storage temperature −60 to +125 °C Lead temperature (soldering, 10s) +270 °C (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. SUPPLEMENTAL ORDERING INFORMATION Basic Model Number: 1W Product Voltage Input: 5V In Voltage Output: Dual Output: Model Revision: Package Code: 5V Out P = DIP−14 P−U = SOP−14 (Gull−wing) DCP01 05 05 (D) (B) ( ) ORDERING INFORMATION(1) PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER(2) TRANSPORT MEDIA SINGLE VOLTAGE(3) DCP010505 DIP-14 NVA −40°C to +100°C DCP010505BP DCP010505BP Rails DCP010505 SOP-14(4) DUA −40°C to +100°C DCP010505BP−U DCP010505BP−U/700 Tape and Reel DCP010512 DIP-14 NVA −40°C to +100°C DCP010512BP DCP010512BP Rails DCP010512 SOP-14(4) DUA −40°C to +100°C DCP010512BP−U DCP010512BP−U/700 Tape and Reel DCP010515 DIP-14 NVA −40°C to +100°C DCP010515BP DCP010515BP Rails DCP010515 SOP-14(4) DUA −40°C to +100°C DCP010515BP−U DCP010515BP−U/700 Tape and Reel DCP012405 DIP-14 NVA −40°C to +100°C DCP012405BP DCP012405BP Rails DCP012405 SOP-14(4) DUA −40°C to +100°C DCP012405BP−U DCP012405BP−U/700 Tape and Reel DUAL VOLTAGE(3) DCP010505 DIP-14 NVA −40°C to +100°C DCP010505DBP DCP010505DBP Rails DCP010505 SOP-14(4) DUA −40°C to +100°C DCP010505DBP−U DCP010505DBP−U/700 Tape and Reel DCP010507 DIP-14 NVA −40°C to +100°C DCP010507DBP DCP010507DBP Rails DCP010507 SOP-14(4) DUA −40°C to +100°C DCP010507DBP−U DCP010507DBP−U/700 Tape and Reel DCP010512 DIP-14 NVA −40°C to +100°C DCP010512DBP DCP010512DBP Rails DCP010512 SOP-14(4) DUA −40°C to +100°C DCP010512DBP−U DCP010512DBP−U/700 Tape and Reel DCP010515 DIP-14 NVA −40°C to +100°C DCP010515DBP DCP010515DBP Rails DCP010515 SOP-14(4) DUA −40°C to +100°C DCP010515DBP−U DCP010515DBP−U/700 Tape and Reel DCP011512 DIP-14 NVA −40°C to +100°C DCP011512DBP DCP011512DBP Rails DCP011512 SOP-14(4) DUA −40°C to +100°C DCP011512DBP−U DCP011512DBP−U/700 Tape and Reel DCP011515 DIP-14 NVA −40°C to +100°C DCP011515DBP DCP011515DBP Rails DCP011515 SOP-14(4) DUA −40°C to +100°C DCP011515DBP−U DCP011515DBP−U/700 Tape and Reel DCP012415 DIP-14 NVA −40°C to +100°C DCP012415DBP DCP012415DBP Rails DCP012415 SOP-14(4) DUA −40°C to +100°C DCP012415DBP−U DCP012415DBP−U/700 Tape and Reel (1) All devices also available in tray quatities. For the most current package and ordering information, see the Package Option Addendum at the end of this data sheet, or refer to our web site at www.ti.com. (2) Models with a (/) are available only in Tape and Reel in the quantities indicated (for example, /700 indicates 700 devices per reel). Ordering 700 pieces of DCP010505BP−U/700 will get a single 700-piece Tape and Reel. (3) Single voltage versions have six active pins; dual voltage versions have seven active pins. (4) SOP package is gull-wing surface-mount. ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 3 ELECTRICAL CHARACTERISTICS At TA = +25°C, VS = nominal, CIN = 2.2µF, and COUT = 0.1µF, unless otherwise noted. DCP01B SERIES PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Output Power 100% full load 0.97 W Ripple O/P capacitor = 1µF, 50% load 20 mVPP Voltage vs temperature Room to cold 0.046 %/°C Voltage vs temperature Room to hot 0.016 %/°C Input Voltage range on VS −10 +10 % Isolation Voltage 1s flash test 1 kVrms Voltage 60s test, UL1950(1) 1 kVrms Line Regulation Output voltage IO = constant(2) VS (min) to VS (typ) 1 15 %Output voltage IO = constant(2) VS (typ) to VS (max) 1 15 % Switching/Synchronization Oscillator frequency (fOSC) Switcing frequency = fOSC/2 800 kHz Sync input low 0.4 V Sync input current VSYNC = +2V 75 µA Disable time 2 µs Capacitance loading on SYNCIN pin External 3 pF Reliability Demonstrated MSL 3−(U) versions, TA = +55°C 55 FITS Thermal Shutdown IC temperature at shutdown +150 °C Shutdown current 3 mA Temperature Range Operating −40 +100 °C (1) During UL1950 recognition tests only. (2) IOUT ≥ 10% load current. ELECTRICAL CHARACTERISTICS PER DEVICE At TA = +25°C, VS = nominal, CIN = 2.2µF, and COUT = 0.1µF, unless otherwise noted. INPUT VOLTAGE (V) OUTPUT VOLTAGE (V) LOAD REGULATION (%) NO LOAD CURRENT (mA) EFFICIENCY (%) BARRIER CAPACITANCE (pF) VS VNOM AT VS (TYP) IQ CISO 75% LOAD(3) 10% TO 100% LOAD(4) 0% LOAD 100% LOAD VISO = 750VRMS PRODUCT MIN TYP MAX MIN TYP MAX TYP MAX TYP TYP TYP DCP010505B 4.5 5 5.5 4.75 5 5.25 19 31 20 80 3.6 DCP010505DB 4.5 5 5.5 ±4.25 ±5 ±5.75 18 32 22 81 3.8 DCP010507DB 4.5 5 5.5 ±5.75 ±6.5 ±7.25 21 35 38 81 3.0 DCP010512B 4.5 5 5.5 11.4 12 12.6 21 38 29 85 5.1 DCP010512DB 4.5 5 5.5 ±11.4 ±12 ±12.6 19 37 40 82 4.0 DCP010515B 4.5 5 5.5 14.25 15 15.75 26 42 34 82 3.8 DCP010515DB 4.5 5 5.5 ±14.25 ±15 ±15.75 19 41 42 85 4.7 DCP011512DB 13.5 15 16.5 ±11.4 ±12 ±12.6 11 39 19 78 2.5 DCP011515DB 13.5 15 16.5 ±14.25 ±15 ±15.75 12 39 20 80 2.5 DCP012405B 21.6 24 26.4 4.75 5 5.25 13 23 14 77 2.5 DCP012415DB 21.6 24 26.4 ±14.25 ±15 ±15.75 10 35 17 76 3.8 (3) 100% load current = 1W/VNOM (typ).(4) Load regulation = (VOUT at 10% load − VOUT at 100% load)/VOUT at 75% load. ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 4 PIN ASSIGNMENTS (Single Voltage Version) NVA and DUA PACKAGES (TOP VIEW) DCP01B 1 2 5 6 7 14 8 VS 0V 0V +VOUT NC SYNCIN SYNCOUT Terminal Functions (Single Voltage) TERMINAL NAME NO. I/O DESCRIPTION VS 1 I Voltage input 0V 2 I Input side common 0V 5 O Output side common +VOUT 6 O +Voltage out NC 7 Not connected SYNCOUT 8 O Unrectified transformer output SYNCIN 14 I Synchronization pin NOTE: I = input and O = output. PIN ASSIGNMENTS (Dual Voltage Version) NVA and DUA PACKAGES (TOP VIEW) DCP01DB 1 2 5 6 7 14 8 VS 0V 0V +VOUT −VOUT SYNCIN SYNCOUT Terminal Functions (Dual Voltage) TERMINAL NAME NO. I/O DESCRIPTION VS 1 I Voltage input 0V 2 I Input side common 0V 5 O Output side common +VOUT 6 O +Voltage out −VOUT 7 O −Voltage out SYNCOUT 8 O Unrectified transformer output SYNCIN 14 I Synchronization pin NOTE: I = input and O = output. ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 5 TYPICAL CHARACTERISTICS At TA = 25°C, unless otherwise noted. DCP010505B OUTPUT RIPPLE vs LOAD (20MHz BW) Load (%) R ip pl e (m V P P) 50 45 40 35 30 25 20 15 10 5 0 20 30 50 7060 80 90 1004010 1µF Ceramic 4.7µF Ceramic 10µF Ceramic DCP010505B VOUT vs VS VS (V) V O UT (V ) 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.6 4.7 4.9 5.15.0 5.2 5.45.3 5.54.84.5 DCP010505B VOUT vs LOAD Load (%) V O UT (V ) 5.8 5.7 5.6 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 10010 20 30 40 50 60 70 80 90 DCP010505B EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 85 80 75 70 65 60 55 10010 20 30 40 50 60 70 80 90 DCP010505DB VOUT vs LOAD Load (%) V O UT (V ) 5.8 5.7 5.6 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 10010 20 30 40 50 60 70 80 90 +VOUT −VOUT DCP010505DB EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 85 80 75 70 65 60 55 10010 20 30 40 50 60 70 80 90 ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 6 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, unless otherwise noted. DCP010507DB VOUT vs LOAD Load (%) V O UT (V ) 7.6 7.4 7.2 7.0 6.8 6.6 6.4 6.2 6.0 10010 20 30 40 50 60 70 80 90 +VOUT −VOUT DCP010507DB EFFICIENCY vs LOAD Load (%) Ef fic ie nc y (% ) 85 80 75 70 65 60 55 50 10010 20 30 40 50 60 70 80 90 DCP010512B VOUT vs LOAD Load (%) V O UT (V ) 14.5 14.0 13.5 13.0 12.5 12.0 11.5 11.0 10010 20 30 40 50 60 70 80 90 DCP010512B EFFICIENCY vs LOAD Load (%) Ef fic ie nc y (% ) 90 85 80 75 70 65 60 55 50 10010 20 30 40 50 60 70 80 90 DCP010512DB VOUT vs LOAD Load (%) V O UT (V ) 14.5 14.0 13.5 13.0 12.5 12.0 11.5 11.0 10.5 10.0 20 30 50 7060 80 90 1004010 +VOUT −VOUT DCP010512DB EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 85 80 75 70 65 60 55 50 20 30 50 7060 80 90 1004010 ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 7 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, unless otherwise noted. DCP010515B VOUT vs LOAD Load (%) V O UT (V ) 18.0 17.5 17.0 16.5 16.0 15.5 15.0 14.5 14.0 10010 20 30 40 50 60 70 80 90 DCP010515B EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 85 80 75 70 65 60 55 50 10010 20 30 40 50 60 70 80 90 DCP010515DB VOUT vs LOAD Load (%) V O UT (V ) 18 17 16 15 14 20 30 50 7060 80 90 1004010 +VOUT −VOUT DCP010515DB EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 90 85 80 75 70 65 60 55 50 20 30 50 7060 80 90 1004010 DCP012405B VOUT vs LOAD Load (%) V O UT (V ) 5.60 5.50 5.40 5.30 5.20 5.10 5.00 4.90 4.80 20 30 6050 70 80 1004010 DCP012405B EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 90 80 70 60 50 40 30 20 10 0 20 30 7060 80 90 10040 5010 ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 8 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, unless otherwise noted. DCP010505B CONDUCTED EMISSIONS (125% Load) Em iss io n Le ve l, Pe ak (dB µ A ) Frequency (MHz) 10.15 10 30 60 50 40 30 20 10 0 −10 −20 DCP010505B CONDUCTED EMISSIONS (8% Load) Em iss io n Le ve l, Pe ak (dB µ A ) Frequency (MHz) 10.15 10 30 60 50 40 30 20 10 0 −10 −20 DCP011512DBP VOUT vs LOAD Load (%) V O UT (V ) 13.50 13.00 12.50 12.00 11.50 11.00 10.50 10010 20 30 40 50 60 70 80 90 +VOUT −VOUT DCP011512DBP EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 80 75 70 65 60 55 50 45 40 35 30 20 30 50 7060 80 90 1004010 DCP011515DBP EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 90 80 70 60 50 40 30 10010 20 30 40 50 60 70 80 90 DCP011515DBP VOUT vs LOAD Load (%) Ef fic ie nc y (% ) 17.00 16.50 16.00 15.50 15.00 14.50 14.00 13.50 13.00 10010 20 30 40 50 60 70 80 90 +VOUT −VOUT ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 9 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, unless otherwise noted. DCP012415DBP EFFICIENCY vs LOAD Load (%) Ef fic ie n cy (% ) 90 80 70 60 50 40 30 20 10010 20 30 40 50 60 70 80 90 DCP012415DBP VOUT vs LOAD Load (%) V O UT (V ) 16.50 16.00 15.50 15.00 14.50 14.00 13.50 10010 20 30 40 50 60 70 80 90 +VOUT −VOUT ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 10 FUNCTIONAL DESCRIPTION OVERVIEW The DCP01B offers up to 1W of unregulated output power with a typical efficiency of up to 85%. This is achieved through highly integrated packaging technology and the implementation of a custom power stage and control IC. The circuit design uses an advanced BiCMOS/DMOS process. For additional information, refer to the application notes located in the DCP01B product folder at www.ti.com. POWER STAGE This uses a push-pull, center-tapped topology switching at 400kHz (divide-by-2 from 800kHz oscillator). OSCILLATOR AND WATCHDOG The onboard 800kHz oscillator generates the switching frequency via a divide-by-2 circuit. The oscillator can be synchronized to other DCP01B circuits or an external source, and is used to minimize system noise. A watchdog circuit checks the operation of the oscillator circuit. The oscillator can be stopped by pulling the SYNC pin low. The output pins will be tri-stated. This will occur in 2µs. THERMAL SHUTDOWN The DCP01B is protected by a thermal shutdown circuit. If the on-chip temperature exceeds 150°C, the device will shut down. Once the temperature falls below 150°C, normal operation will resume. If the thermal condition continues, operation will randomly cycle on and off. This will continue until the temperature is reduced. SYNCHRONIZATION In the event that more than one DC/DC converter is needed onboard, beat frequencies and other electrical interference can be generated. This is due to the small variations in switching frequencies between the DC/DC converters. The DCP01B overcomes this by allowing devices to be synchronized to one another. Up to eight devices can be synchronized by connecting the SYNCIN pins together, taking care to minimize the stray capacitance. Stray capacitance (> 3pF) will have the effect of reducing the switching frequency, or even stopping the oscillator circuit. If synchronized devices are used, it should be noted that at startup, all devices will draw maximum current simultaneously. This can cause the input voltage to dip. If it dips below the minimum input voltage (4.5V), the devices may not start up. A 2.2µF capacitor should be connected close to the input pins. If more than eight devices are to be synchronized, it is recommended that the SYNCIN pins are driven by an external device. Details are contained in Application Report SBAA035, External Synchronization of the DCP01/02 Series of DC/DC Converters, available for download at www.ti.com. CONSTRUCTION The DCP01B basic construction is the same as standard ICs. There is no substrate within the molded package. The DCP01B is constructed using an IC, rectifier diodes, and a wound magnetic toroid on a leadframe. Since there is no solder within the package, the DCP01B does not require any special PCB assembly processing. This results in an isolated DC/DC converter with inherently high reliability. ADDITIONAL FUNCTIONS DISABLE/ENABLE The DCP01B can be disabled or enabled by driving the SYNCIN pin using an open drain CMOS gate. If the SYNCIN pin is pulled low, the DCP01B will be disabled. The disable time depends upon the external loading; the internal disable function is implemented in 2µs. Removal of the pull-down will cause the DCP01B to be enabled. Capacitive loading on the SYNCIN pin should be minimized in order to prevent a reduction in the oscillator frequency. DECOUPLING Ripple Reduction A high switching frequency of 400kHz allows simple filtering. To reduce ripple, it is recommended that at least a 1µF capacitor is used on VOUT. Dual outputs should have both the positive and negative buses decoupled to VOUT ground (pin 5). The required 2.2µF low equivalent series resistance (ESR) ceramic capacitor on the input of the 5V to 15V versions, and the ≥ 0.47µF low-ESR ceramic capacitor on the 24V versions help reduce ripple and noise. See Application Bulletin SBVA012, DC-to-DC Converter Noise Reduction, available for download at www.ti.com. ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 11 Connecting the DCP01B in Series Multiple DCP01B isolated 1W DC/DC converters can be connected in series to provide nonstandard voltage rails. This is possible by using the floating outputs provided by the DCP01B galvanic isolation. Connect the positive VOUT from one DCP01B to the negative VOUT (0V) of another, as shown in Figure 1. If the SYNCIN pins are tied together, the self-synchronization feature of the DCP01B will prevent beat frequencies on the voltage rails. The SYNCIN feature of the DCP01B allows easy connection in series, which reduces separate filtering components. The outputs on dual output DCP01B versions can also be connected in series to provide two times the magnitude of VOUT, as shown in Figure 2. For example, a dual 15V DCP01B could be connected to provide a 30V rail. Connecting the DCP01B in Parallel If the output power from one DCP01B is not sufficient, it is possible to parallel the outputs of multiple DCP01B converters (see Figure 3). Again, the SYNCIN feature allows easy synchronization to prevent power-rail beat frequencies at no additional filtering cost. DCP 01B VOUT 1VSUPPLY VS 0V DCP 01B VOUT 2 VOUT1 + VOUT2 SYNCINCIN(1) COUT COUTCIN(1) SYNCIN VS 0V 0V 0V COM NOTE: (1) CIN requires a low−ESR ceramic capacitor: 5V to 15V version is 2.2µF; 24V version is minimum 0.47µF. COUT = 1.0µF. Figure 1. Connecting the DCP01B in Series DCP 01B +VOUT VSUPPLY +VOUT −VOUT−VOUT 0V VS 0V COM COUT(1) COUT(1) CIN(1) NOTE: (1) CIN requires a low−ESR ceramic capacitor: 5V to 15V version is 2.2µF; 24V version is minimum 0.47µF. COUT = 1.0µF. Figure 2. Connecting Dual Outputs in Series DCP 01B 0V 0V VOUTVSUPPLY VS 0V DCP 01B VOUT 2 x Power Out SYNCIN SYNCIN VS 0V COM COUT(1) COUT(1) CIN(1) CIN(1) NOTE: (1) CIN requires a low−ESR ceramic capacitor: 5V to 15V version is 2.2µF; 24V version is minimum 0.47µF. COUT = 1.0µF. Figure 3. Connecting Multiple DCP01Bs in Parallel ��!"�# ��� �� SBVS012E − DECEMBER 2000 − REVISED DECEMBER 2007 www.ti.com 12 APPLICATION INFORMATION The DCP01B, DCV01, and DCP02 are three families of miniature DC/DC converters providing an isolated unregulated voltage output. All are fabricated using a CMOS/DMOS process with the DCP01B replacing the familiar DCP01 family that was fabricated from a bipolar process. The DCP02 is essentially an extension of the DCP01B family providing a higher power output with a significantly improved load regulation, and the DCV01 is tested to a higher isolation voltage. TRANSFORMER DRIVE CIRCUIT Transformer drive transistors have a characteristically low value of transistor on resistance (RDS); thus, more power is transferred to the transformer. The transformer drive circuit is limited by the base current availabl