|Category||Semiconductors => Power Management => Offline and Isolated DC/DC Controllers and Converters => PWM and Resonant Controller|
|Part family||UCC38083 Current Mode Push-Pull PWM With Programmable Slope Compensation|
|Description||Current Mode Push-Pull PWM With Programmable Slope Compensation 8-SOIC 0 to 70|
|Company||Texas Instruments, Inc.|
|Datasheet||Download UCC38083 datasheet
|Cross ref.||Similar parts: MAX887HESA, MAX887HESA+, MAX887HESA+T, MAX887HESA-T, UCC2800D, UCC2801D, UCC2802D, UCC2803D, UCC2804D, UCC2805D|
|Operating Temperature Range(C)||0 to 70|
|UVLO Thresholds On/Off(V)||12.5/8.3|
|Features||Multi-topology,Programmable Slope Compensation,Soft Start|
|Approx. Price (US$)||1.10 | 1ku|
|Pin nb||Package type||Ind std||JEDEC code||Package qty||Carrier||Device mark||Width (mm)||Length (mm)||Thick (mm)||Pitch (mm)|
|• Current Doubler Rectifier Offers Ripple Current Cancellation | Doc|
|• How to Specify the Current Sense Resistor in a Converter using the UCC28083 (Rev. A)
How to Specify the Current Sense Resistor in a Converter Using the UCC28083 | Doc
|• A New Synchronization Circuit for Power Converters (Rev. A)
The synchronization of multiple PWM and PFC controllers is desirable for many reasons. The most common reason is that it keeps all the noise at one particular frequency and makes it easier to filter. The circuit described changes the slope of the ramp to l | Doc
8PIN CURRENT MODE PUSHPULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
Programmable Slope Compensation Internal Soft-Start on the UCC38083/4 Cycle-by-Cycle Current Limiting Low Start-Up Current 120 µA and 1.5 mA Typical Run Current Single External Component Oscillator Programmable from 50 kHz to 1 MHz High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability Current Sense Discharge Transistor to Improve Dynamic Response Internally Trimmed Bandgap Reference Undervoltage Lockout with Hysteresis
High-Efficiency Switch-Mode Power Supplies Telecom dc-to-dc Converters Point-of-Load or Point-of-Use Power Modules Low-Cost Push-Pull and Half-Bridge ApplicationsDESCRIPTION
The is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output's duty cycle to less than 50%. The new UCC3808x family is based on the UCC3808A architecture. The major differences include the addition of a programmable slope compensation ramp to the CS signal and the removal of the error amplifier. The current flowing out of the ISET pin through an external resistor is monitored internally to set the magnitude of the slope V OUT compensation function. This device also includes an internal discharge transistor from the CS pin to ground, which is activated at each clock cycle after the pulse is terminated. This discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay. The UCC38083 and the UCC38084 devices have a typical soft-start interval time 3.5 ms while the UCC38085 and the UCC38086 has less than 100 µs for applications where internal soft-start is not desired. The UCC38083 and the UCC38085 devices have the turn-on/off thresholds 8.3 V, while the UCC38084 and the UCC38086 has the turn-on/off thresholds 4.1 V. Each device is offered in 8-pin TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P) packages.
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.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
THERMAL RESISTANCE TABLE PACKAGE SOIC-8 (D) PDIP-8 (P) TSSOP-8 (PW) jc(°C/W) 50 32(2) ja(°C/W) 160(1) 110(1)
to 257(2) NOTES: (1) Specified ja (junction to ambient) is for devices mounted FR4 PC board with one ounce copper where noted. When resistance range is given, lower values are for 5 inch2 aluminum PC board. Test PWB was 0.062 inch thick and typically used 0.635-mm trace widths for power packages and 1.3-mm trace widths for non-power packages with x 100-mil probe land area at the end of each trace. (2). Modeled data. If value range given for ja, lower value is for 3x3 inch. 1 oz internal copper ground plane, higher value is for 1x1-inch. ground plane. All model data assumes only one trace for each non-fused lead.
AVAILABLE OPTIONS TA INTERNAL SOFT START 75 µs UVLO 4.3 V OFF V SOIC-8 (D) UCC38085D UCC38086D PACKAGES PDIP-8 (P) UCC38086P TSSOP-8 (PW) UCC38084PW UCC38085PW
UCC38086PW The D and PW packages are available taped and reeled. Add R suffix to device type, e.g. UCC28083DR (2500 devices per reel) UCC38083PWR (2000 devices per reel). OR P PACKAGE (TOP VIEW) PW PACKAGE (TOP VIEW) OUTA VDD CTRL ISET OUTB GND RT CSabsolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, VDD (IDD < 10 mA). 15 V Supply current, IDD. 20 mA Sink current (peak): OUTA. 1.0 A OUTB. 1.0 A Source current (peak): OUTA. -0.5 A OUTB. -0.5 A Analog inputs: CTRL. V to VDD +0.3 V CS. V to VDD +0.3 V, not to exceed 6 V RSET (minimum). µA < IRT < 100 µA). 2.0 V Power dissipation 25°C (P package). 1 W Power dissipation 25°C (D package). 650 mW Power dissipation = 25°C (PW package). 400 mW Junction operating temperature, TJ. to 150°C Storage temperature, Tstg. to 150°C Lead temperature (soldering 10 seconds). 300°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltages are with respect to GND. Currents are positive into, and negative out of the specified terminal.
electrical characteristics over recommended operating virtual junction temperature range, VDD 10 V (See Note 1),1-µF capacitor from VDD to GND, = 220 pF, RSET to 85°C for to 70°C for = TJ (unless otherwise noted) overall
PARAMETER Start-up current Supply current CTRL 0 V, See Note 1 TEST CONDITIONS VDD < UVLO start threshold voltage 0 V, MIN TYP 120 1.5 MAX 200 2.5 UNITS µA mA
PARAMETER UCC38083/5 Start threshold voltage Minimum operating voltage after start Hysteresis voltage UCC38083/5 UCC38084/6 See Note 1 TEST CONDITIONS MIN TYP MAX V UNITS
PARAMETER Frequency Voltage amplitude Oscillator fall time (dead time) RT pin voltage 2 x f(OUTA) See Note 2 TEST CONDITIONS MIN 180 1.4 TYP MAX UNITS kHz ns V
|Related products with the same datasheet|
|Some Part number from the same manufacture Texas Instruments, Inc.|
|UCC38083D Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083D ti UCC38083, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083DR Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083DR ti UCC38083, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083P Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083P ti UCC38083, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083PW Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083PW ti UCC38083, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083PWR Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38083PWR ti UCC38083, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084 Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084D ti UCC38084, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084DR Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084DR ti UCC38084, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084P Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084P ti UCC38084, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084PW Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084PW ti UCC38084, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084PWR Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38084PWR ti UCC38084, Current Mode Push-pull PWM With Programmable Slope Compensation|
|UCC38085 Current Mode Push-pull PWM With Programmable Slope Compensation|
698Series : Single Phase Bridges, 7.5 Amp, Standard And Fast Recovery.
78ST105 : Non-Isolated DC-DC Converters. Very Small Footprint High Efficiency > 85% Self-Contained Inductor Internal Short-Circuit Protection Over-Temperature Protection Fast Transient Response Wide Input Range The is a series of wide input voltage, 3-terminal Integrated Switching Regulators (ISRs). These ISRs have a maximum output current of 1.5A and an output voltage that is laser trimmed.
BXB150Series : Telecom/ISDN. Single Output DC/DC Converters. Industry standard footprint MTBF >1.4 million hours (Bellcore 332) Input voltage to ETS300-132-2 Adjustable output voltage No minimum load required Separate case ground pin 2:1 input range for battery powered applications Undervoltage lockout (UVLO) UL, VDE and CSA safety approvals The BXB150 Series are high power density DC/DC converters packaged.
IS-1845ASRH : broadband power. Single Event Radiation Hardened High Speed, Current Mode PWM.
LT1371 : Step-Up and Flyback. LT1371, 3A, 500kHz. The is a monolithic high frequency current mode switching regulator. It can be operated in all standard switching configurations including boost, buck, flyback, forward, inverting and "Cuk." A 3A high efficiency switch is included on the die, along with all oscillator, control and protection circuitry. The LT1371 typically consumes only 4mA quiescent.
MAX872 : 10 A, Low-Dropout, Precision Voltage Reference. The MAX872/MAX874 precision 2.5V and 4.096V micropower voltage references consume a maximum of only 10µA and operate from supply voltages to 20V. The combination of ultra-low quiescent current and low 200mV dropout makes them ideal for battery-powered equipment. They source and sink to 500µA with only 200mV input voltage headroom, which makes the 2.5V.
ML4813 : Flyback Power Factor Controller. The is a PWM controller designed for use in a discontinuous "flyback" or "buck-boost" type power factor correction (PFC) system for low power, low cost applications. The circuit includes a precision reference, oscillator, error amplifier, over-voltage comparator, over-current comparator, and an extra op-amp as well as a high current output. In addition,.
PT6627 : Non-Isolated DC-DC Converters. Single Device: 6A Output Input Voltage Range: to 16V Adjustable Output Voltage 83% Efficiency Remote Sense Capability Standby Function Over-Temperature Protection The PT6620 series is a line of 12V bus Integrated Switching Regulators (ISRs). These regulators are de- signed for stand-alone operation in applications requiring as much 6A of output current.
PT6931A : Plug-in Power Solutions->Non-Isolated->Multiple Ou. ti PT6931, 3.3/2.5Vout 25W 5V-Input Adjustable Dual Output Isr.
PT6943A : Plug-in Power Solutions->Non-Isolated->Multiple Ou. ti PT6943, 3.3V/1.5V, 6A+6A 5V-Input Dual-output Isr.
TPS2301 : Controllers/Switches. Dual Hot Swap Power Controllers With Independent Circuit Breaker And Power-good Reporting.
TPS75433QPWP : ti TPS75433, Fast-transient-response 2-A LDO Voltage Regulator. TPS75225Q, TPS75233Q WITH RESET TPS75425Q, TPS75433Q WITH POWER GOOD FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS 2-A Low-Dropout Voltage Regulator Available 2.5-V, 3.3-V Fixed Output and Adjustable Versions Open Drain Power-On Reset With 100-ms Delay (TPS752xxQ) Open Drain Power-Good (PG) Status Output (TPS754xxQ) Dropout Voltage Typically.
L5983 : Package A free-form text of the package type. Status The current status of a product: Preview: Product proposal has been announced. Evaluation: The period in which customer samples become available. Active: Product is in volume production., NRND: Not Recommended for New Design, Product is fully available to support existing customers but is not recommended.
AIC1187 : The AIC1187 is an ultra low dropout and high performance linear regulator with 1A output current capability. The output voltage is fixed 1.5V, 1.8V, 2.5V and 3.3V. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. In addition, the enable pin reduces power dissipation at shutdown mode. Current.
SC4626 : 2.5MHz, 1A Synchronous Step Down Regulator In SOT23-5 The SC4626 is a high efficiency, synchronous step-down regulator providing up to 1A output current in a SOT23-5 package. The device requires only three external filter components for a complete step-down regulator solution..
ISL70001SEH : Rad Hard And SEE Hard 6A Synchronous Buck Regulator The ISL70001SEH is a radiation hardened and SEE hardened high efficiency monolithic synchronous buck regulator with integrated MOSFETs. This single chip power solution operates over an input voltage range of 3V to 5.5V and provides a tightly regulated output voltage that is externally adjustable from.