|
|
PDF TDA4867J Data sheet ( Hoja de datos )
| Número de pieza | TDA4867J | |
| Descripción | Full bridge current driven vertical deflection booster | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TDA4867J (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
INTEGRATED CIRCUITS
DATA SHEET
TDA4867J
Full bridge current driven vertical
deflection booster
Preliminary specification
2003 Feb 05
1 page  
Philips Semiconductors
Full bridge current driven vertical
deflection booster
Preliminary specification
TDA4867J
Protection
The output stages are protected against:
• Thermal overshoot in normal operation
• Short-circuit of the coil (pins OUTB and OUTA).
Guard circuit
The internal guard circuit provides a blanking signal for the
CRT. The guard signal is active HIGH:
• At thermal overshoot
• During flyback
• When missing flyback supply voltage
• When power supply voltage too low, VP < VP(min).
The internal guard circuit will not be activated, if the input
signals on pins INP and INN delivered from the driver
circuit are out of range or at short-circuit of the coil
(pins OUTB and OUTA).
For this reason an external guard circuit can be applied to
detect failures of the deflection (see Fig.5). This circuit will
be activated when flyback pulses are missing, which is the
indication of any abnormal operation.
The guard output pin can be used as input for the power
save mode. A current or a voltage has to be applied to the
pin. In this case the output stages are switched off
completely.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134); voltages referenced to ground (pin GND);
unless otherwise specified.
SYMBOL
PARAMETER
VP supply voltage
VFB flyback supply voltage
IFB flyback supply current
VINP, VINN input voltage
IINP, IINN
input current
VOUTB
output voltage on pin OUTB
VOUTA
output voltage on pin OUTA
IOUTB, IOUTA output current
VFEEDB
feedback voltage
IFEEDB
feedback current
VGUARD
guard voltage
IGUARD
guard current
Tstg storage temperature
Tamb
ambient temperature
Tj junction temperature
Vesd electrostatic discharge voltage
CONDITIONS MIN.
0
0
0
0
0
0
0
note 1
0
0
0
0
0
−20
−20
note 2
−20
note 3
note 4
−4 000
−250
MAX.
30
60
±1.8
5
±5
VP
VFB
±1.6
VP
±5
10
±5
+150
+75
+150
+4 000
+250
UNIT
V
V
A
V
mA
V
V
A
V
mA
V
mA
°C
°C
°C
V
V
Notes
1. Maximum output currents IOUTB and IOUTA are limited by current protection.
2. Internally limited by thermal protection; will be activated for Tj ≥ 150 °C.
3. Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ resistor.
4. Machine model: equivalent to discharging a 200 pF capacitor through a 0.75 µH inductance.
2003 Feb 05
5
5 Page 
Philips Semiconductors
Full bridge current driven vertical
deflection booster
Preliminary specification
TDA4867J
Example
Table 1 Values given from application diagram Fig.6
SYMBOL
Idefl
Ldeflcoil
Rdeflcoil
Rm
Rp
Rref
VFB
Tamb
Tdeflcoil
Rth(j-mb)
Rth(mb-amb)(1)
VALUE
0.71
5.2
5.4 [= 4.2 + 7% + ∆R(ϑ)]
1 (+1%)
220
3.4
40
50
75
4
6
UNIT
A
mH
Ω
Ω
Ω
kΩ
V
°C
°C
K/W
K/W
Note
1. Use heatsink compound.
Table 2 Calculated values
SYMBOL
VP
tflb
Ptot
Pdefl
PIC
Rth(tot)
Tj(max)(1)
VALUE
8.5
≈200
3.4
0.9
2.5
10
75
UNIT
V
µs
W
W
W
K/W
°C
Note
1. Tj(max) = PIC × [Rth(j-mb) + Rth(mb-amb)] + Tamb.
Calculation formulae for supply voltage:
Vb1 = Vsat(VP-OUTA) + Rdeflcoil × Idefl − U’L + Rm × Idefl + Vsat(OUTB-GND)
Vb2 = Vsat(OUTA-GND) + Rdeflcoil × Idefl + U’L + Rm × Idefl + Vsat(VP-OUTB)
for Vb1 > Vb2 : VP = Vb1
for Vb2 > Vb1 : VP = Vb2
where:
U’L = Ldeflcoil × 2 × Idefl × fv
fv = vertical deflection frequency.
Calculation formulae for power consumption:
PIC = Ptot – Pdefl
Ptot = VP × -I-d-2--e--f-l + VP × 0.02 A + 0.1 W + VFB × IFB
Pdefl = 13-- × (Rdeflcoil + Rm) × Id2efl
where:
PIC = power dissipation of the TDA4867J
Ptot = total power dissipation
Pdefl = power dissipation of the deflection coil.
Calculation
formulae
for
flyback
time
(tflb):
tflb
≈
R-----d---eL--f-l-dc--e-o--fi-ll-c--+o---i-l-R----m--
×
ln
-VV----FF---BB----+–-----((--RR-----dd--ee---ff-ll-cc--oo---ii-ll--+-+----RR-----mm----))---×-×----I-I-dd---ee--ff-ll
2003 Feb 05
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TDA4867J.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TDA4867 | Full bridge current driven vertical deflection booster | NXP Semiconductors |
| TDA4867J | Full bridge current driven vertical deflection booster | NXP Semiconductors |
| TDA4867J | Full Bridge Current Driven Vertical Deflection Booster |  Philips |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |