M62500FP datasheet(7/11 Pages) MITSUBISHI

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SYNCHRONIZATION DEFLECTION SYSTEM CONTROL PWM IC

M62500P/FP

MITSUBISHI (Dig./Ana. INTERFACE)

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C1, C10

: Is required for stabilization of Vcc and VREF.

Is normally set to tens of µF to hundreds of

µF.

VR 1, 2, 3, 4

: Is determined taking into account the load

capability of VREF. (External load capability

of approx. 5mA) Shall be normally set to

approx. 10k

Ω.

C2, C8, C9

: Is added to high impedance pin of voltage

control for improvement in noise margin.

Depends on the device installation

environment. Shall be normally set to approx.

0.1µF.

C4, D1

: Is added for the execution of software start.

Set a time constant, taking into account the

set value of VR2.

: Is added to reduce interference by Tin and

outputs. With VIN=approx. 2.5V to 5V, the

resistance value of approx. 22k

Ω is

recommended.

Cagc 1, 2

: Capacitance necessary for stabilization of

AGC. As the capacitance is larger, the

stability is larger, but the characteristic of

answering becomes worse. The capacitance

value of 1µF is recommended.

R2, R3, R10, R11 : A gain setup constant of error Amp. To

R4, R5, R8, R9

assure the stability of feedback, R4 and R8

C3, C4, C5, C6

shall be set to several k

Ω to tens of kΩ to set

the gain to approx. 20dB to 40dB with f=1

kHz. If the gain is too low, jitter may take

place. It is therefore recommended to set C3

and C5 to tens of pF to hundreds of pF, C4

and C6 to thousands of pF to tens of

thousands of pF, and R5 and R9 to tens of

Ω to hundreds of kΩ.

Ragc

: Resistance for setting AGC on the OUT2

side. Is set with Ragc=27k

Ω.

: If f to be input into Tin suddenly changes,

addition of C7 shortens non-control time of

Dout (output of "H"). As a capacitance value,

it is recommended to adopt 2.2µF. In the

case of adding C7, however,

Cagc2

≥0.68µF is recommended.

R6, R7

: Current limit resistance of OUT1/2. Is

normally set to several

Ω. Insertion of direct

limit resistance into OUT1/2 pin is also

effective.

R12

: Pull-up resistance of DOUT output. DOUT is

an open collector output and requires R12. Is

normally set to several k

Ω.

* Note: To reduce interference in the signal system, pins

GND and

P.GND shall be grounded at a point in the power supply block.

APPLICATION EXAMPLE

VR2

Cagc1

Tin

VR1

+IN1

-IN1

OUT1

C10

VR4

VR3

DOUT

Ragc

Cagc2

+IN2

R10

-IN2

VCC

OUT2

R11

R12

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