RCA MCR51R410, Service Manual

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SERVICE , MANUAL
1.7.3 Function Table
Inputs
E
Sn
Channel On
L L Y
0n
-Z
n
L H Y
1n
-Z
n
H X none
Notes
H=HIGH state (the more positive voltage)
L=LOW state (the less positive voltage)
X=STATE is immaterial
1.7.4 Refer to Table 8 about Functions and Data of HEF4053’s Pins.
1.8 Power supply circuit STR-G5653
The Series STR-G5653/F6654 is specifically designed to satisfy the requirements for increased
integration and reliability in off-line quasi-resonant flyback converters. The series incorporates a
high-precise error amplifying control and drive circuit with discrete avalanche-rated power MOSFET,
featuring fewer external components, small-size and standard power supply.
Covering the power range from below 25 watts up to 300 watts for 100/115/230 VAC inputs, and up to
150 watts for 85 to 265 VAC universal input, these devices can be used in a range of applications, from
battery chargers and set top boxes, to televisions, monitors, and industrial power supply units.
Cycle-by-cycle current limiting, under-voltage lockout with hysteresis, over-voltage protection, and
thermal shutdown protects the power supply during the normal overload and fault conditions.
Low-current startup and a low-power standby mode selected from the secondary circuit completes a
comprehensive suite of features. The series is provided in a five-pin overmolded SIP style package,
affording dielectric isolation without compromising thermal characteristics.
(1) Features
Flyback Operation with Quasi-Resonant Soft Switching
for Low Power Dissipation and EMI
Rugged Avalanche-Rated MOSFET
Soft drive circuit MOSFET
Adjustable MOSFET switching speed
Choice of MOSFET Voltage and rDS(on)
Full Over-Current Protection (no blanking)
Under-Voltage Lockout with Hysteresis
Over-Voltage Protection
Direct Voltage Feedback
Low Start-up Current (100
ȝ
Amax)
Low-Frequency, Low-Power Standby Operation
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