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UC1846-SP датащи(PDF) 9 Page - Texas Instruments

номер детали UC1846-SP
подробное описание детали  Class-V, Radiation Hardened PWM Controller
Download  29 Pages
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

UC1846-SP датащи(HTML) 9 Page - Texas Instruments

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8
OSC
3
4
X3
+
5
6
E/A
7
COMP
E/A–
E/A+
C/S+
C/S-
CT
RT
SYNC
VIN
5.1 V
REFERENCE
REGULATOR
UVLO
LOCKOUT
2
VREF
13
11
VC
A OUT
14
12
B OUT
GND
Q
Q
T
S
S
R
Q
1
16
6 k
0.5 mA
350 mV
0.5 V
F/F
C/L SS
SHUTDOWN
Output Stage
COMP
9
UC1846-SP
www.ti.com
SLUS871D – JANUARY 2009 – REVISED DECEMBER 2016
Product Folder Links: UC1846-SP
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
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.
7.2 Functional Block Diagram
NOTE: Pin numbers shown are for the J package.
7.3 Feature Description
UC1846-SP is a current mode controller, used to support various topologies such as forward, flyback, half-
bridge, full bridge, push-pull configurations.
Current mode control is a two-loop system. The switching power supply inductor is hidden within the inner
current control loop. This simplifies the design of the outer voltage control loop and improves power supply
performance in many ways, including better dynamics. The objective of this inner loop is to control the state-
space averaged inductor current, but in practice the instantaneous peak inductor current is the basis for control
(switch current, equal to inductor current during the on time, is often sensed). If the inductor ripple current is
small, peak inductor current control is nearly equivalent to average inductor current control.


Аналогичный номер детали - UC1846-SP_16

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
UC1846-SP TI1-UC1846-SP_15 Datasheet
630Kb / 29P
[Old version datasheet]   Current-Mode PWM Controller
More results

Аналогичное описание - UC1846-SP_16

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
UC1825A-SP TI1-UC1825A-SP_16 Datasheet
831Kb / 40P
[Old version datasheet]   Class-V, Radiation Hardened High-Speed PWM Controller
UC1825B-SP TI1-UC1825B-SP Datasheet
4Mb / 30P
[Old version datasheet]   Class-V, Radiation Hardened High-Speed PWM Controller
UC1845A-SP TI1-UC1845A-SP Datasheet
938Kb / 28P
[Old version datasheet]   QML Class V, Radiation Hardened Current-Mode PWM Controller
UC1843B-SP TI1-UC1843B-SP Datasheet
3Mb / 27P
[Old version datasheet]   QML Class V, Radiation Hardened Current-Mode PWM Controller
UC1825B-SP TI-UC1825B-SP_V01 Datasheet
4Mb / 31P
[Old version datasheet]   UC1825B-SP Class-V, Radiation Hardened High-Speed PWM Controller
UC1825B-SP TI-UC1825B-SP_V02 Datasheet
4Mb / 31P
[Old version datasheet]   UC1825B-SP Class-V, Radiation Hardened High-Speed PWM Controller
UC1845A-SP TI-UC1845A-SP_15 Datasheet
874Kb / 28P
[Old version datasheet]   UC1845A-SP QML Class V, Radiation Hardened Current-Mode PWM Controller
UC1843B-SP TI-UC1843B-SP_V01 Datasheet
3Mb / 27P
[Old version datasheet]   UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller
UC1843B-SP TI-UC1843B-SP_V02 Datasheet
3Mb / 31P
[Old version datasheet]   UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller
logo
Renesas Technology Corp
ISL73847SEH RENESAS-ISL73847SEH Datasheet
1Mb / 43P
   Radiation Hardened Single/Dual Phase Current Mode PWM Controller
Feb 15, 2023
More results


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