Thursday, December 31, 2015

SAMSUNG UA40C5000QR POWER SUPPLY CIRCUIT - PD46AFOU-ZSM, BN44-00352A - HV9963 - UCC25600

SAMSUNG PD46AFOU-ZSM, BN44-00352A

HV9963 Closed Loop LED Driver
The HV9963 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buck-boost or SEPIC) in a constant frequency mode. The controller uses a peak current-mode control scheme (with programmable slope compensation) and includes an internal transconductance amplifier to accurately control the output current over all line and load conditions. Multiple HV9963s can be synchronized to each other or to an external clock using the SYNC pin. The IC also provides a disconnect switch gate drive output, which can be used to disconnect the LEDs in case of a fault condition using an external disconnect FET. The 10V external FET drivers allow the use of standard level FETs. The low voltage 5.0V AVDD is used to power the internal logic and also acts as a reference voltage to set the current level.
The HV9963 includes an enhanced PWM dimming logic (patent pending) that enables very high PWM dimming ratios. HV9963 also provides a TTL compatible, low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few tens of kilohertz.
Applications
RGB or white LED backlighting 
Battery powered LED lamps  
Other DC/DC LED drivers
Power Supply to the IC (VIN, PVDD and AVDD)
The HV9963 can be powered directly from its VIN pin that takes a voltage up to 40V. There are two linear regulators within the HV9963 – a 10V linear regulator (PVDD), which is used for the two FET drivers, and a 5.0V linear regulator (AVDD) which supplies power to the rest of the control logic. The IC also has a built in under-voltage lockout which shuts off the IC if the voltage at either VDD pin falls below its UVLO threshold. Both VDD pins must by bypassed by a low ESR capacitor (≥ 0.1µF) for proper operation
Current Sense (CS)
The current sense input is used to sense the source current of the switching FET. The CS input of the HV9963 includes a built in 100ns (minimum) blanking time to prevent spurious turn off due to the initial current spike when the FET turns on. The IC includes an internal resistor divider network, which steps down the voltage at the COMP pins by a factor of 12 (11R:1R). This voltage is used as the reference for the current sense comparators. Since the maximum voltage of the COMP pin is AVDD - 0.7V, this voltage determines the maximum reference current for the current sense comparator and thus the maximum inductor current.
Soft Start (SS)
Soft start of the LED current can be achieved by connecting a capacitor at the SS pin. The rate of rise of SS pin limits the LED current’s rate of rise. Upon start-up, the capacitance at the COMP network is being charged by the 200μA sourcing current of the transconductance amplifier. Without the soft-start function, this larger current would cause the COMP voltage to increase faster than the boost converter’s response time, causing overshoots in the LED current during start-up.
Over Voltage Protection
The HV9963 provides hysteretic over voltage protection allowing the IC to recover in case the LED load is disconnected momentarily.
Pin Description
Pin
Name
Description
1


VIN


This pin is the input of a 40V high voltage regulator, and should not be left unconnected. If a voltage at
PVDD is being applied from an external power supply, the VIN and PVDD pins should be shorted.


2


PVDD

This pin is a regulated 10V supply for the two gate drivers (FLT and GATE). It must be bypassed with a
low ESR capacitor to GND (at least 1.0μF).

3

GATE

This is the GATE driver output for the switching FET.


4


GND

Ground return for all the low power analog internal circuitry as well as the gate drivers. This pin must be
connected to the return path from the input.


5

CS
This pin is used to sense the source current of the external power FET. It includes a built-in 100ns (min)
blanking time.

6


HCP


This pin provides the hiccup timer in case of a fault. A capacitor at this pin programs the hiccup time.

7



RT



This pin sets the frequency of the power circuit. A resistor between RT and GND will program the circuit
in constant frequency mode. The switching frequency is synchronized to the PWMD input and oscillator
will turn on once PWMD goes high.


8


SYNC

This I/O pin may be connected to the SYNC pin of other HV9963 circuits and will cause the oscillators to
lock to the highest frequency oscillator.

9

SS

This pin is used to provide soft start upon turn-on of the IC. A capacitor at this pin programs the soft start
time.


10



AVDD


This is a power supply pin for all internal control circuits. This voltage is also used as the reference
voltage both internally and externally. It must be bypassed with a low ESR capacitor to GND (at least
0.1μF).


11



FLT


This pin is used to drive an external disconnect FET which disconnects the load from the circuit during
a fault condition or during PWM dimming to achieve a very high dimming ratio.


12



OVP


This pin provides the over voltage protection for the converter. When the voltage at this pin exceeds
1.25V, the gate output of the HV9963 is turned off and FLT goes low. The IC will turn on when the voltage
at the pin goes below 1.125V.


13


PWMD

When this pin is pulled to GND (or left open), switching of the HV9963 is disabled. When an external TTL
high level is applied to it, switching will resume.


14


COMP

Stable Closed loop control can be accomplished by connecting a compensation network between COMP
and GND.


15



IREF


The voltage at this pin sets the output current level. The current reference can be set using a resistor
divider from the AVDD pin. Connecting a voltage greater than 1.25V at this pin will disable the short
circuit comparator.

16
FB
This pin provides output current feedback to the HV9963 by using a current sense resistor.

UCC25600 8-Pin High-Performance Resonant Mode Controller
Description
The UCC25600 high performance, resonant mode controller is designed for dc-to-dc applications using resonant topologies, especially the LLC half-bridge resonant converter. This highly integrated controller implements frequency modulation control and complete system functions in only an 8-pin package. Switching to the UCC25600 will greatly simplify the system design and layout, and improve time to market, all at a price point lower than competitive 16- pin device offerings.
The internal oscillator supports the switching frequencies from 40 kHz to 350 kHz. This high- accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost. The programmable dead time enables zero-voltage switching with minimum magnetizing current. This maximizes system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipment using a half-bridge topology. By incorporating a 0.4-A source and 0.8-A sink driving capability, a low cost, reliable gate driver transformer is a real option. The UCC25600 delivers complete system protection functions including overcurrent, UVLO, bias supply OVP, and overtemperature protection.
Applications
100-W to 1-kW Power Supplies
LCD, Plasma, and DLP® TVs
Adaptors, Computing, and ATX Power Supplies
Home Audio Systems
Electronic Lighting Ballasts
POWER SUPPLY SCHEMATIC DIGRAM 
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ROLSEN TELEVISION SERVICE MODES

ROLSEN TELEVISION SERVICE MODES 

 Note: Do not change the values of other necessary parameters, this may lead to loss of the factory settings. To avoid the loss of factory settings:
Before changing the settings is better on a piece of paper to write down all the settings so you can go back to the original settings
MODEL : C1410, C1420, S2116, C2118, C2119 (dual-chip processor with the old TMP87CM38N)
C2112
FUNAI MK10
Log into the service menu can only be with a special service console.
MODEL : C2910, C2519, C2988
C1410, C1420, S2116, C2118, C2119 (two chips with the new processor CH08TO934)
C21R21, C2121, C2190, C21R90
C1420 (odnochipov)
C1425
Log in to the service menu as follows:
1. Set the volume equal to "O". (Required)
2. Press the button on the button "MUTE"
3. Hold down the "MUTE", press the "MENU" button on the front of the TV.
4. The screen will light up in the right corner the letter "D", and in the left corner of the displayed adjustable parameter and its value.
5. Pages menu change button "CAL"
Switching parameters are green and red buttons on a blue field panel. Change the parameters, yellow and blue buttons on a blue field.
MODEL : C1440,2146,2148,2139
Button "G +" on the TV and the "0" button on the remote control in standby mode.
MODEL : C72FDS107,109
# Press the first button [PRESET], then [TEST] Service console, on the screen in the upper right corner appears the letter M. To exit the service mode, press the [TEST] on the remote service. You can also exit the service mode by pressing the [STANDBY].
# Log in with a user panel: press [MENU], you will see the menu "Image". Press the number buttons [6] [4] [8] [3] on the remote control. In order to enter the service menu M1 ~ M4, press the corresponding number button on the remote. To access the service menu M5 ~ M0, press the button first [CALL] to exit the M1-M4, the screen will display the letter M, then subsequently press the [LOCK] (picture suitcase with a handle) and one of the number buttons [5 ] [6] [7] [8] [9] [0] to enter the menu M5 ~ M0. If you are in any menu M5 ~ M0, then go to another menu can be carried out without pressing the [LOCK], only the digital keys.
# In service mode by pressing the [- / -], you can enter a mode BUS OPEN. Pressing this button will exit this mode.
MODEL : C2131, C2133, C2150, C2192, C2195
 1. Log in to the service menu, you can use one of the following methods:
1.1.1. Using the service console
1.1.2. Having closed for a short time 1 and 3 pin terminal X2 through a resistor 2.2 ohms
1.1.3. Using a conventional remote control, press the following key combination:
# Reduce the volume to "0"
# Press the «menu»
# Select the icon "suitcase"
# dial series "5" "1" "7"
# Press the "green" button
2. A list of all the settings shown in Table no1
Exit the service menu by TV / AV button on the remote control. At the same time the recording in EEPROM All settings of the service menu.
MODEL : C2160, C21R65, C2165, C21R65

Log in to the service menu as follows:
1. Press the VOLUME DOWN button on the TV, after reducing the volume to "O", CLICK THE "DISPLAY ON REMOTE" while continuing to hold the volume down button on the front.
2. To exit the service mode, just turn off the TV
MODEL : C2135
The S2135 can be accessed with a conventional remote control.
It is necessary to open the remote, the nearest to the chip pad is not withdrawn under the button. If it bridged the TV enters the service mode

ROLSEN 42D60 Service mod and power supply circuit

Contents of this article 

  • How to enter to service mode
  • Power supply schematics
  • IC description 




ROLSEN 42D60 

SERVICE MODE
How to enter to service mode
To enter to factory mode Press the remote keys in the following sequences
Display > 1 > 1 > Line
L6598 High voltage resonant controller
Sense op amp for closed loop control or protection features
High accuracy current controlled oscillator
Integrated bootstrap diode Clamping on Vs
Description
The L6598 device is manufactured with the BCD offline technology, able to ensure voltage ratings up to 600 V, making it perfectly suited for AC/DC adapters and wherever a resonant topology can be beneficial. The device is intended to drive two power MOSFETs, in the classical half bridge topology. A dedicated timing section allows the designer to set soft-start time, soft-start and minimum frequency. An error amplifier, together with the two enable inputs, are made available. In addition, the integrated bootstrap diode and the Zener clamping on low voltage supply, reduces to a minimum the external parts needed in the applications.
PIN CONFIGURATION
Pin no.
Name
Function
1
CSS
Soft-start timing capacitor
2
Rfstart
Soft-start frequency setting - low impedance voltage source -see also Cf
3
Cf
Oscillator frequency setting - see also Rfmin, Rfstart
4
Rfmin
Minimum oscillation frequency setting - low impedance voltage source - see also Cf
5
OPout
Sense op amp output - low impedance
6
OPon-
Sense op amp inverting input -high impedance
7
OPon+
Sense op amp non inverting input - high impedance
8
EN1
Half bridge latched enable
9
EN2
Half bridge unlatched enable
10
GND
Ground
11
LVG
Low side driver output
12
Vs
Supply voltage with internal Zener clamp
13
N.C.
Not connected
14
OUT
High side driver reference
15
HVG
High side driver output
16
Vboot
Bootstrapped supply voltage

L6562 TRANSITION-MODE PFC CONTROLLER
Description
The L6562 is a current-mode PFC controller operating in Transition Mode (TM). Pin-to-pin compatible with the predecessor L6561, it offers improved performance. The highly linear multiplier includes a special circuit, able to reduce AC input current distortion, that allows wide-range-mains operation with an extremely low THD, even over a large load range. The output voltage is controlled by means of a voltage-mode error amplifier and a precise (1% @Tj = 25°C) internal voltage reference. The device features extremely low consumption (≤70 µA before start-up and <4 mA running) and includes a disable function suitable for IC remote ON/OFF, which makes it easier to comply with energy saving norms (Blue Angel, EnergyStar, Energy2000, etc.). An effective two-step OVP enables to safely handle overvoltages either occurring at start-up or resulting from load disconnection. The totem-pole output stage, capable of 600 mA source and 800 mA sink current, is suitable for big MOSFET or IGBT drive which, combined with the other features, makes the device an excellent low-cost solution for EN61000-3-2 compliant SMPS's up to 300W.
PIN CONFIGURATION
No
Pin
Function
1


INV


Inverting input of the error amplifier. The information on the output voltage of the PFC pre
regulator is fed into the pin through a resistor divider.


2


COMP

Output of the error amplifier. A compensation network is placed between this pin and INV (pin
#1) to achieve stability of the voltage control loop and ensure high power factor and low THD.


3


MULT

Main input to the multiplier. This pin is connected to the rectified mains voltage via a resistor
divider and provides the sinusoidal reference to the current loop.


4


CS

Input to the PWM comparator. The current flowing in the MOSFET is sensed through a resistor,
the resulting voltage is applied to this pin and compared with an internal sinusoidal-shaped
reference, generated by the multiplier, to determine MOSFET’s turn-off.

5


ZCD


Boost inductor’s demagnetization sensing input for transition-mode operation. A negative-going
edge triggers MOSFET’s turn-on.

6


GND


Ground. Current return for both the signal part of the IC and the gate driver.

7



GD



Gate driver output. The totem pole output stage is able to drive power MOSFET’s and IGBT’s
with a peak current of 600 mA source and 800 mA sink. The high-level voltage of this pin is
clamped at about 12V to avoid excessive gate voltages in case the pin is supplied with a high
Vcc.


8


Vcc

Supply Voltage of both the signal part of the IC and the gate driver. The supply voltage upper
limit is extended to 22V min. to provide more headroom for supply voltage changes.

 POWER SUPPLY SCHEMATICS 
PFC
MAIN POWER 
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