UC1846-SP

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Radiation-tolerant, QML-V, 40V input, 0.5A dual-output 500kHz PWM controller

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Hoja de datos

document-pdfAcrobat UC1846-SP Class-V, Radiation Hardened PWM Controller datasheet (Rev. D) (Inglés) PDF | HTML

UC1846-SP

ACTIVO

Hoja de datos

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Detalles del producto

Topology

Boost, Flyback, Forward, Full bridge, Half bridge, Push pull

Control mode

Current

Features

Error amplifier, Multi-topology, Soft start, Synchronization pin

Duty cycle (max) (%)

50

Topology

Boost, Flyback, Forward, Full bridge, Half bridge, Push pull

Control mode

Current

Features

Error amplifier, Multi-topology, Soft start, Synchronization pin

Duty cycle (max) (%)

50

LCCC (FK)

20

79.0321 mm² (— mm × — mm)

DIESALE (KGD)

—

See data sheet

CFP (W)

16

69.319 mm² (— mm × — mm)

CDIP (J)

16

135.3552 mm² (— mm × — mm)

QML-V Qualified, SMD 5962-86806
5962P8680603VxA:
- Radiation Hardness Assurance (RHA) up to 30-krad(Si) Total Ionizing Dose (TID)
- Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
- Exhibits Low-Dose Rate Sensitivity but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
Automatic Feed-Forward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-Pull Configuration
Enhanced Load Response Characteristics
Parallel-Operation Capability for Modular Power Systems
Differential Current-Sense Amplifier With Wide Common-Mode Range
Double-Pulse Suppression
500-mA (Peak) Totem-Pole Outputs
±1% Bandgap Reference
Undervoltage Lockout (UVLO)
Soft-Start Capability
Shutdown Terminal
500-kHz Operation

QML-V Qualified, SMD 5962-86806
5962P8680603VxA:
- Radiation Hardness Assurance (RHA) up to 30-krad(Si) Total Ionizing Dose (TID)
- Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
- Exhibits Low-Dose Rate Sensitivity but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
Automatic Feed-Forward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-Pull Configuration
Enhanced Load Response Characteristics
Parallel-Operation Capability for Modular Power Systems
Differential Current-Sense Amplifier With Wide Common-Mode Range
Double-Pulse Suppression
500-mA (Peak) Totem-Pole Outputs
±1% Bandgap Reference
Undervoltage Lockout (UVLO)
Soft-Start Capability
Shutdown Terminal
500-kHz Operation

The UC1846-SP control devices provide all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules while maintaining equal current sharing.

Protection circuitry includes built-in UVLO and programmable current limit in addition to soft-start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully latched operation, double-pulse suppression, deadline adjust capability, a ±1% trimmed bandgap reference, and low outputs in the OFF state.

The UC1846-SP control devices provide all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules while maintaining equal current sharing.

Protection circuitry includes built-in UVLO and programmable current limit in addition to soft-start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully latched operation, double-pulse suppression, deadline adjust capability, a ±1% trimmed bandgap reference, and low outputs in the OFF state.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	UC1846-SP Class-V, Radiation Hardened PWM Controller datasheet (Rev. D)	PDF \| HTML	14/12/2016
*	Informe de radiación y confiabilidad	UC1846-SP Neutron Displacement Damage (NDD) Characterization Report		29/10/2021
*	Informe de radiación y confiabilidad	UC1846-SP Neutron Displacement Damage (NDD) Characterization		26/06/2017
*	Informe de radiación y confiabilidad	UC1846-SP Radiation Test Report		8/05/2015
*	SMD	UC1846-SP SMD 5962-86806		8/07/2016
	Guía de selección	TI Space Products (Rev. L)		27/03/2026
	Nota sobre la aplicación	Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form (Rev. A)	PDF \| HTML	5/11/2025
	Application brief	DLA Approved Optimizations for QML Products (Rev. C)	PDF \| HTML	17/06/2025
	Nota sobre la aplicación	Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B)	PDF \| HTML	10/06/2025
	Más documentación	TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B)		20/02/2025
	Nota sobre la aplicación	QML flow, its importance, and obtaining lot information (Rev. C)		30/08/2023
	Nota sobre la aplicación	Single-Event Effects Confidence Interval Calculations (Rev. A)	PDF \| HTML	19/10/2022
	Application brief	Controlling Input Power for Present and Next-Generation Power Controllers	PDF \| HTML	14/12/2020
	Nota sobre la aplicación	DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer		21/08/2020
	Libro electrónico	Radiation Handbook for Electronics (Rev. A)		21/05/2019
	Artículo técnico	Power Tips: Calculate an R-C snubber in seven steps	PDF \| HTML	5/05/2016

Diseño y desarrollo

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