PD-97563B SBB SERIES HIGH RELIABILITY CLASS K HYBRID, RADIATION HARDENED, NON-ISOLATED POINT OF LOAD (POL) VOLTAGE REGULATOR Single Output Description The SBB Series point of load (POL) DC to DC voltage regulators are high reliability hermetically sealed thick film hybrids designed to provide a single regulated DC output from a DC voltage source. The output power rating is 14W to 30W depending on output voltage, with maximum current rating of 14A. The POLs are class K qualified per MIL-PRF-38534. These products are designed to operate continuously on board a space craft up to the rated power output without power derating for case temperature of 85C. The POLs are suitable for harsh radiation environments normally encountered in the geo-synchronous orbit (GEO), medium earth orbit (MEO), low earth orbit (LEO), deep space, and for other challenging radiation design applications. The SBB POL is a non isolated synchronous buck regulator. It incorporates IR's heritage- rich components and circuit design library for long term reliability expected of system designs with a mission life of up to 18 years or more. The SBB Series of POLs operate from a DC input power source with the voltage range of 4.5V to 5.5V. It converts DC input voltage down to a fixed and highly stable DC output. The standard voltage outputs are 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The output is adjustable with the addition of an external resistor. The output adjustment range is approximately 10% of a nominal output voltage. Also included is remote sensing capability to compensate for voltage drops in the output lines. This feature, in combination with the output adjustment capability, enables an output voltage of a POL to be accurately set as needed. With its excellent efficiency performance, SBB POLs are ideal as the point of load regulators for the distributed power architecture (DPA) design systems. Other key benefits include excellent dynamic load response, precise voltage setting, remote output voltage sensing and synchronization. www.irf.com Features n n n n n n n n n n n n n n n n n n n n n n n n Total dose >100K Rads (Si) SEE hardness rated with LET > 82 MeV-cm2 /mg Operates from 4.5V to 5.5V DC supply Fixed output voltage: 1V, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V are standards Output power up to 30W or 14A maximum without de-rating High efficiency to 89% Remote sense compensation Fixed 400 KHz operating frequency Output adjustable to 10% of nominal output with an external resistor Enable function pin for remote on/off control Input undervoltage and output under voltage protection Overload and short circuit protection Low noise with integrated input and output filters No external filter capacitors required Soft start Under voltage lockout (UVLO) Synchronization Output Status Telemetry(POK) -55 to +85C operating case temperature without output power derating MIL-PRF-38534 element evaluated components Custom versions available Derating per MIL-STD-1547 for space flight MTBF > 2.8 million hours for space flight environments Standard Microcircuit Drawings (SMDs) Available 1 11/28/12 SBB SERIES Single Output The product's package footprint is less than three square inches. The package and lid materials are cold rolled steel. The low profile package measures 1.9"L x 1.5"W x 0.335"H, excluding mounting tabs and input/output (I/O) pins. The ceramic sealed I/O pins protrude the package's side walls with the mounting tabs on the corners of the side walls. The I/O pins are copper Alloy 52. The pins are gold plated for long term storage. Gold is to be removed prior to assembly. A complete POL weighs less than 60 grams. Cooling of this device can be accomplished by bonding the base of the package to a metal plate or heat sink with a thermally conductive material. The package's mechanical outline and I/O pins functional assignment are included in this data sheet. The SBB POLs are designed, manufactured, tested, and qualified at IR's facility in San Jose, California which is qualified to ISO9001 and MIL-PRF-38534 by DSCC. Flight hardware is 100% screened and fully compliant to class K per MIL-PRF-38534. Abbreviated screening version or engineering model (EM) of the SBB is available for engineering evaluation. Please refer to the Device Screening table for details. Circuit Description The SBB Series POLs utilize a non-isolated buck circuit design topology with synchronous output rectification to maximize efficiency. The nominal switching frequency is 400 KHz. An internal EMI filter minimizes the reflected switching ripple current to meet most space applications at the system level. A two-stage output filter reduces the output ripple and noise to a very low level required by today's digital loads. No external filter capacitors are required for typical design applications. Output current is limited under any load fault condition. It is designed to behave similar to a constant current source with the output voltage dropping below nominal. The SBB POL will resume normal operation when the load current is reduced below the current limit point. This protects the POL from both overload and short circuit conditions. The current limit threshold exhibits a negative temperature coefficient to reduce the possibility of thermal runaway. 2 Undervoltage Lockout (UVLO): An UVLO circuit prohibits the POL from operating when the line voltage is too low to maintain the output voltage. The POL will not start until the line input voltage rises to approximately 4.3 volts and will shut down when the input voltage drops below 3.9 volts. Output Voltage Adjustment: The output voltage (Vout) of an SBB can be adjusted to 10% of a nominal output voltage. One external resistor with a power rating of > 0.125 watt is required for this function. Following is the formula to determine an approximate value of the resistor and how it needs to be connected to the functional pins for a higher and a lower output voltage with respect to the nominal output voltage. To reduce Vout, connect an adjust resistor to Vadjust pin and Output pin 11280 x Vout - 10280 Vnom Radj = x 2 Vout 2- Vnom To increase Vout, connect an adjust resistor to Vadjust pin and Output Return pin 9280 x Vout Vnom - 10280 Radj = 2 x Vout 2- Vnom Where: Radjust is the value of the adjust resistor in Ohms() Vnom is the nominal output voltage of the SBB www.irf.com SBB SERIES Single Output Remote Sense: Output pins 4 and 5 must be connected to +Sense pin 6 for proper operation. The +Sense pin may be connected remotely to the output line at the load to compensate for a voltage drop in the output line for precise optimum output regulation. The maximum voltage compensation in combination with the output voltage adjustment (if required) is limited to 10% of the nominal output voltage.To enhance the load regulation performance Input Return (Pin 2) may be connected externally to Output Return (Pin 3). Enable: An Enable pin is provided to remotely turn the POL on or off. It can also be used for output sequenceing for multiple SBB POL regulators. The nominal threshold relative to the input return (pin 2) is 2.5V. If 3.9 volts or greater are applied to the Inhibit pin (pin 3) then the POL will operate normally. The pin may be left open for normal operation. A voltage of 0.4V or less will cause the SBB POL to shut down. POK:The SBB POL also provides a power ok (POK) output status signal at Pin 11. A logic high signal is present when the POL's output voltage is greater than 95% of the nominal output voltage. A logic low signal at Pin 11 indicates the POL's output voltage drops below the output voltage threshold of 95% The SBB Series POLs use a proven conservative design methodology with careful incorporation of known radiation performance devices and established reliability components. All components are fully derated to MIL-STD-1547. Standard design analyses include stress, thermal, failure modes and effects (FMEA), reliability & worst case and are available upon request. Synchronization: An external synchronization port is provided to allow the multiple SBB POLs to be synchronized to an external frequency source to minimize the noise interference coming from the switching operation of the POLs. The synchronization frequency ranges from 360 KHz to 440 KHz and the synchronization signal port can be driven from 5V logic. www.irf.com 3 SBB SERIES Single Output Absolute Maximum Ratings Recommended Operating Conditions Input voltage range -0.5Vdc to +7.0Vdc Input voltage range 4.5Vdc to 5.5Vdc Output power Internally limited Output power 0 to Max. Rated Lead temperature 300C for 10 seconds Operating case temperature -55C to +125C Operating case temperature -55C to +85C Storage temperature -55C to +125C Storage temperature -55C to +125C 1 1 Meets derating per MIL-STD-1547 Electrical Performance Characteristics Parameter Group A Subgroup Conditions -55C TC +85C VIN = 5.0V DC 5%, CL = 0 unless otherwise specified Input Voltage Output Voltage (VOUT) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Output power (POUT) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Output current (IOUT) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Line regulation (VRLINE) 1 1 1 1 1 1 I OUT = 100% rated load I OUT = 100% rated load 2,3 2,3 2,3 2,3 2,3 2,3 Unit Min Nom Max 4.5 5.0 5.5 0.985 1.182 1.478 1.773 2.463 3.251 1.000 1.200 1.500 1.800 2.500 3.300 VIN = 4.5, 5.0 and 5.5V, Note 2 1,2,3 VIN = 4.5, 5.0 and 5.5V, Note 2 VIN = 4.5, 5.0, 5.5 Volts I OUT = 0, 50%, 100% rated Load regulation (VRLOAD) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S 1,2,3 VIN = 4.5, 5.0, 5.5 Volts I OUT = 0, 50%, 100% rated Switching frequency (FS) 1,2,3 Sync Input (Pin 9) open 14 16.8 21 25.2 30 30 0 0 0 0 0 0 14 14 14 14 12 9.1 -0.25 0.25 -15 -15 -15 -15 -13 -17 360 15 15 15 15 17 17 400 V 1.015 1.218 1.523 1.827 2.538 3.350 1.030 1.236 1.537 1.855 2.550 3.366 0.970 1.164 1.462 1.755 2.450 3.234 1,2,3 1,2,3 Limits 440 V W A % mV KHz For Notes to Electrical Performance Characteristics Table, refer to page 6 4 www.irf.com SBB SERIES Single Output Electrical Performance Characteristics Parameter Group A Subgroup Input current (IIN) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Output ripple (VRIP) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Efficiency (EFF) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Enable Input (Inhibit Function) Open circuit voltage Drive current (sink) Voltage range Synchronization Input Frequency range Pulse high level Pulse low level Pulse transition time Pulse duty cycle Current Limit point SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Power dissipation, load fault (PD) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S Output response to Step load changes (VTLD) SBB501S SBB501R2S SBB501R5S SBB501R8S SBB502R5S SBB503R3S ( continued ) Conditions -55C TC +85C VIN = 5.0V DC 5%, CL = 0 unless otherwise specified Limits Unit Min IOUT = 0, Pin 10 open Nom Max 130 200 40 50 mA Pin 10 shorted to pin 2 1,2,3 30 30 30 30 25 20 VIN = 4.5, 5.0, 5.5 Volts IOUT = 100% rated load, Note 3 1,2,3 IOUT = 100% rated load 1,2,3 Note 1 67 70 73 76 82 86 External clock for Sync Input (Pin 9) Note 1 1,2,3 VOUT = 90% of Nominal 1,2,3 Short Circuit, Overload, Note 5 4,5,6 Half Load to/from Full Load, Note 6 % VIN 500 50 V A V 20 440 Vin +0.5 +0.5 50 80 KHz V V nS % 14.5 14.5 14.5 14.5 12.5 9.5 21.5 21.5 21.5 21.5 17.9 13.7 VIN - 0.8 -0.5 1,2,3 mV p-p 360 Vin -0.5 -0.5 11 11 11 11 9.5 8.0 -150 -150 -150 -150 -200 -200 150 150 150 150 200 200 A W mV For Notes to Electrical Performance Characteristics Table, refer to page 6 www.irf.com 5 SBB SERIES Single Output Electrical Performance Characteristics Parameter Recovery time, step load changes (TTLD) Output response to step line changes (VTLN) Recovery time, step line changes (TTLN) Turn-on Response Overshoot (VOS) Turn-on Delay (TDLY) Capacitive Load (CL) Line Rejection Group A Subgroup 4,5,6 4,5,6 ( continued ) Conditions -55C TC +85C VIN = 5.0V DC 5%, CL = 0 unless otherwise specified Half Load to/from Full Load, Notes 6,7 4.5V to/from 5.5V IOUT = 100% rated load, Notes 1, 8 4,5,6 4.5V to/from 5.5V IOUT = 100% rated load, Notes 1,7,8 4,5,6 No Load, Full Load, Note 9 Limits Unit Min Nom Max -100 0.5 1 IOUT = 100% rated load No effect on DC performance Notes 1, 4 1 IOUT = 100% rated load DC to 50KHz, Note 1 200 s 100 mV pk 200 s 100 10 mV ms 10000 F 28 dB Device Weight 60 MTBF MIL-HDBK-217F2, SF, 40C 6 g Hr 2.8 x10 Electrical Performance Characteristics - Notes 1. Parameter is tested as part of design characterization or after design changes. Thereafter, parameter shall be guaranteed to the limits specified. Parameter verified during line and load regulation tests. Guaranteed for a D.C. to 20MHz bandwidth. Tested using a 20KHz to 10MHz bandwidth. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit may cause erratic behavior during turn-on. Overload power dissipation is defined as the device power dissipation with the load set such that VOUT = 90% of nominal. Load step transition time 1.0 s/A for 3.3V & 2.5V models and 0.1 s/A for 1.0V, 1.2V, 1.5V & 1.8V models. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1% of its steady state value. Line step transition time 10 s. Turn-on delay time from either a step application of input power or a logic low to a logic high transition on the Enable pin (pin 10) to the point where VOUT = 90% of nominal. 2. 3. 4. 5. 6. 7. 8. 9. Radiation Performance Characteristics Test Conditions Min Typ Unit MIL-PRF-883, Method 1019 Total Ionizing Dose ( Gamma ) Operating bias applied during exposure, 100 Krads (Si) 82 MeVycm /mg 2 / 3 Rated Load, VIN = 5.0V Single Event Effects Heavy ions (LET) SEU, SEL, SEGR, SEB Operating bias applied during exposure, 2 Full Rated Load, VIN = 5.5V Test lab: Cyclotron Institute, Texas A & M University Notes: International Rectifier currently does not have a DLA Land and Maritime (formerly DSCC) certified Radiation Hardness Assurance Program. 6 www.irf.com SBB SERIES Single Output Block Diagram Input 1 Input Return 2 Input Filter UVLO High-Side Gate Drive PWM Output Filter Enable Interface Enable 10 Current Controller Sync. In 8 Sync. Out 9 POK 11 Case High-Side Switch Low-side Gate drive Low-Side Switch Clock Generator Sync. Interface 5 Output 4 Output 3 Output Return 6 +Sense 7 Vadjust Current Sense Power OK Sense Voltage Controller 12 Fig 1: Typical Efficiency @-55C - 1.2V Output (For Part Number SBB501R2S) Typical Efficiency at -55 Degrees C, 1.2V Output SBB501R2S Vin = 4.5V Vin = 5.0V 85% Vin = 5.5V 80% Efficiency, % 75% 70% 65% 60% 55% 50% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Output Current, A www.irf.com 7 SBB SERIES Single Output Fig 2: Typical Efficiency @25C - 1.2V Output (For Part Number SBB501R2S) Typical Efficiency at 25 Degrees C, 1.2V Output SBB501R2S Vin = 4.5V 85% Vin = 5.0V Vin = 5.5V 80% Efficiency, % 75% 70% 65% 60% 55% 50% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Output Current, A Fig 3: Typical Efficiency @+85C - 1.2V Output (For Part Number SBB501R2S) Typical Efficiency at +85 Degrees C, 1.2V Output SBB501R2S Vin = 4.5V Vin = 5.0V 85% Vin = 5.5V 80% Efficiency, % 75% 70% 65% 60% 55% 50% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Output Current, A 8 www.irf.com SBB SERIES Single Output Fig 4: Typical Efficiency @ 25C - 1.5V Output (For Part Number SBB501R5S) Typical Efficiency at 25 Degrees C, 1.5V Output P/N SBB501R5S Vin = 4.5V 85% Vin = 5.0V Vin = 5.5V 80% Efficiency, % 75% 70% 65% 60% 55% 50% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Output Current, A Fig 5:Typical Efficiency @ 25C - 3.3V Output (For Part Number SBB503R3S) Typical Efficiency at 25 Degrees C, 3.3V Output SBB503R3S Vin = 4.5V 95% Vin = 5.0V Vin = 5.5V Efficiency, % 90% 85% 80% 75% 70% 0 1 2 3 4 5 6 7 8 9 10 Output Current, A www.irf.com 9 SBB SERIES Single Output Mechanical Outline 1.900 0.128 4 places 1.15 0.375 0.050 Max. 0.25 Typ 0.25 0.25 5 Eq. Spaces 0.20 0.30 1.50 1.75 2.000 0.20 Typ. Non-cum. 1.00 Ref. Pin 0.040 0.55 0.170 2.40 Ref. 0.25 0.335 Max. Pin Designation Standard Microcircuit Drawing Equivalence Table Pin # Designation 1 Input Standard Microcircuit Drawing Number IR Standard Part Number 2 Input Return 5962-1120601KXA SBB501S/CKA 3 Output Return 5962-1120601KXC SBB501S/CKC 4 Output 5962-1120602KXA SBB501R2S/CKA 5 Output 5962-1120602KXC SBB501R2S/CKC 6 +Sense 7 Vadjust 5962-1120603KXA SBB501R5S/CKA 8 Sync In 5962-1120603KXC SBB501R5S/CKC 9 Sync Out 5962-1120604KXA SBB501R8S/CKA 10 Enable 5962-1120604KXC SBB501R8S/CKC 11 POK 5962-1120605KXA SBB502R5S/CKA 5962-1120605KXC SBB502R5S/CKC 5962-1120606KXA SBB503R3S/CKA 5962-1120606KXC SBB503R3S/CKC 12 Case Note: Input and output returns are internally connected 10 Tolerance: .XX = 0.01 .XXX = 0.005 www.irf.com SBB SERIES Single Output Device Screening Requirement MIL-STD-883 Method Temperature Range No Suffix d CK d -55C to +85C -55C to +85C EM -55C to +85C Element Evaluation MIL-PRF-38534 Class K Class K N/A Non-Destructive Bond Pull 2023 Yes Yes N/A Internal Visual 2017 Yes Yes c Temperature Cycle 1010 Cond C Cond C Cond C Constant Acceleration 2001, Y1 Axis 3000 Gs 3000 Gs 3000 Gs PIND 2020 Cond A Cond A N/A 320 hrs @ 125C 320 hrs @ 125C 48 hrs @ 125C ( 2 x 160 hrs ) ( 2 x 160 hrs ) Burn-In 1015 Final Electrical MIL-PRF-38534 -55C, +25C, -55C, +25C, -55C, +25C, ( Group A ) & Specification +85C +85C +85C PDA MIL-PRF-38534 2% 2% N/A Seal, Fine and Gross 1014 Cond A, C Cond A, C Cond A Radiographic 2012 Yes Yes N/A External Visual 2009 Yes Yes c Notes: c d Best commercial practice. CK is a DLA Land and Maritime (formerly DSCC) part marking used to designate a Class K compliant hybrid. The CK marking does not indicate the hybrid is radiation certified. No Suffix is a radiation rated device but not available as a DLA Land and Maritime qualified SMD per MIL-PRF-38534. International Rectifier currently does not have a DLA Land and Maritime certified Radiation Hardness Assurance Program. Part Numbering SBB 5 01 S /XX X Model SBB = 30 watts Nominal Input Voltage 5 = 5V Output Voltage 01 = 1V, 01R2 = 1.2V 01R5 = 1.5V, 01R8 = 1.8V 02R5 = 2.5V, 03R3 = 3.3V Output S = Single Lead Finish for CK only A = Solder Dipped C = Gold Plated Blank for No Suffix and EM Lead Finish for No Suffix = Gold Plated Lead Finish for EM is Gold Plated or Solder Dipped depending on availability Screening Level (Please refer to Screening Table) No Suffix, CK, EM WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SAN JOSE: 2520 Junction Avenue, San Jose, California 95134, Tel: (408) 434-5000 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 11/2012 www.irf.com 11