TDA4866 Datasheet, PDF (2/16 Pages) NXP Semiconductors – Full bridge current driven vertical deflection booster

Philips Semiconductors
Full bridge current driven vertical deflection
booster
Product specification
TDA4866
FEATURES
• Fully integrated, few external components
• No additional components in combination with the
deflection controller TDA485x, TDA4841PS
• Pre-amplifier with differential high CMRR current mode
inputs
• Low offsets
• High linear sawtooth signal amplification
• High efficient DC-coupled vertical output bridge circuit
• Powerless vertical shift
• High deflection frequency up to 160 Hz
• Power supply and flyback supply voltage independent
adjustable to optimize power consumption and flyback
time
• Excellent transition behaviour during flyback
• Guard circuit for screen protection.
GENERAL DESCRIPTION
The TDA4866 is a power amplifier for use in 90 degree
colour vertical deflection systems for frame frequencies of
50 to 160 Hz. The circuit provides a high CMRR current
driven differential input. Due to the bridge configuration of
the two output stages DC-coupling of the deflection coil is
achieved. In conjunction with TDA485x, TDA4841PS the
ICs offer an extremely advanced system solution.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS MIN. TYP. MAX. UNIT
DC supply; note 1
V_P
supply voltage (pin 3)
V_FB
flyback supply voltage (pin 7)
I_q
quiescent current (pin 7)
note 2
8.2
−
−
−
−
7
25
V
60
V
10
mA
Vertical circuit
I_defl
deflection current
(peak-to-peak value; pins 4 and 6)
0.6
−
2
A
I_id
differential input current (peak-to-peak value) note 3
−
±500 ±600 µA
Flyback generator
I_FB
maximum current during flyback
(peak-to-peak value; pin 7)
−
−
2
A
Guard circuit; note 1
V₈
guard voltage
I₈
guard current
guard on
7.5
8.5
10
V
guard on
5
−
−
mA
Notes
1. Voltages refer to pin 5 (GND).
2. Up to 60 V ≥ V_FB ≥ 40 V a decoupling capacitor C_FB = 22 µF (between pin 7 and pin 5) and a resistor R_FB = 100 Ω
(between pin 7 and V_FB) are required (see Fig.4).
3. Differential input current I_id = I₁ − I₂.
1999 Jun 14
2