TEA1501TD [NXP]
IC 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8, SOT-176, 8 PIN, Switching Regulator or Controller;
| 型号： | TEA1501TD |
| 厂家： | 
NXP |
| 描述： | IC 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8, SOT-176, 8 PIN, Switching Regulator or Controller CD 开关 光电二极管 |
| 文件： | 总22页 (文件大小：154K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
TEA1501
Greeny; GreenChip
1998 Aug 19
Preliminary specification
File under Integrated Circuits, IC11
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
• Under-voltage lockout
FEATURES
• Over-temperature protection.
• Direct off-line operation (90 to 276 V AC)
• Low external component count
GENERAL DESCRIPTION
• Integrated high voltage startup current source for a fast
startup within 0.25 s
The TEA1501 (Greeny) is the low power member of the
GreenChip family and is especially designed for standby
switched mode power supply applications. Greeny
incorporates all the necessary functions for an efficient
and low cost power supply for 90 to 276 V AC universal
input. Greeny is a monolithic integrated circuit and is
available in a DIP8 package. The design is made in the
BCD_PowerLogic750 process and includes the high
voltage switching device. Using only 7 functional pins,
Greeny contains extensive control functions to form a
flexible and a reliable power supply with a minimum of
external components. Greeny operates in a flyback
topology (see Fig.1) with a fixed switching frequency,
constant primary peak current control and regulates the
output voltage in burst mode.
• Integrated power switch: 650 V, 40 Ω, 0.25 A
• Programmable primary peak current
• Data transfer from isolated secondary side to
non-isolated primary side via the transformer
• On/Off function replaces expensive mains switch by a
functional switch.
Green features
• Low current consumption in Off mode, typical 40 µA
• Efficient burst mode operation, for 0.1 to 3 W output
power.
Protection features
Applications include low power supplies and standby
power supplies as used in television, monitor, lighting
electronics and domestic appliances with an output power
from 0.1 to 3 W.
• Cycle-by-cycle current control with programmable
primary peak current
• Over-voltage protection
BASIC FLYBACK CONFIGURATION
V
V
out
in
n
n
s
load
p
V
zener
on/off
(1)
Src
OOD
Bt
Drn
n.c.
TEA1501
Gnd
Vaux
Ref
C
n
a
R
R
Bt
Src
Ref
MGM823
(1) The secondary earthing point is isolated from the primary earthing points.
Fig.1 Basic flyback configuration.
2
1998 Aug 19
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
QUICK REFERENCE
SYMBOL
PARAMETER
CONDITIONS
MIN.
0.4
TYP.
0.7
MAX.
0.9
UNIT
Von/off
Vdata(off)
Vdata(on)
Istart
on/off level Greeny
data off level
V
V
V
20 µA < IOOD < 100 µA
20 µA < IOOD < 100 µA
VVaux = 8 V, VOOD > 0.9 V
VOOD < 0.4 V
0.9
3.5
−2.4
−
1.3
4.0
−1.8
40
1.6
4.5
−1.2
100
−
data on level
startup current, Vaux pin
drain current in Off mode
breakdown voltage
on resistance
mA
µA
V
IDrn(off)
VBD
IDrn(off) + 100 µA
650
25
−
Rdson
Tj = 25 °C, IDrn = 80 mA
40
55
Ω
Vdetect
detection level
0.47
0.50
0.53
V
ORDERING INFORMATION
PACKAGE
DESCRIPTION
plastic dual in-line package; 8 leads (300 mil)
TYPE NUMBER
NAME
VERSION
TEA1501
DIP8
SOT97-1
1998 Aug 19
3
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
BLOCK DIAGRAM
Vaux
5
Ref
4
Drn
8
startup current source
Vaux MANAGEMENT
REFERENCE BLOCK
TEMPERATURE
SUPPLY CURRENT
TRACKING
PROTECTION
6
Gnd
SWITCH
OSCILLATOR
MODULATOR
LOGIC
3
2
Bt
BURST OSCILLATOR
on/off level
GATE DRIVER
LEADING EDGE
BLANKING
COUNTER
power
switch
OOD
1
Src
data on
data off
V
detect
TEA1501
MGM820
Fig.2 Block diagram.
PINNING
SYMBOL PIN
DESCRIPTION
Src
1
source of the power switch and input
for primary current sensing
handbook, halfpage
Src
OOD
Bt
1
2
3
4
8
Drn
OOD
Bt
2
3
4
5
on/off input and data transfer output
input for burst capacitor
7
6
5
n.c.
TEA1501
Gnd
Vaux
Ref
input for reference resistor
Ref
Vaux
supply input of the IC and input for
voltage regulation
MGM821
Gnd
n.c.
6
7
ground
not connected to comply with safety
requirements
Drn
8
drain of the power switch and input
for startup current
Fig.3 DIL8 Package.
1998 Aug 19
4
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
As all the windings of the flyback transformer have the
same flux variation, the secondary voltage and the
auxiliary voltage are related via the turns-ratio (ns/na).
Therefore, the isolated secondary voltage is controlled by
the non-isolated auxiliary voltage.
FUNCTIONAL DESCRIPTION
The TEA1501 contains a high voltage power switch, a high
voltage startup circuit and low voltage control circuitry on
the same IC. Together with a transformer and a few
external components a low power, isolated, flyback
converter can be built. The Greeny system operates in a
burst mode. During each burst period the output voltage is
regulated to a desired voltage level.
The burst mode operates by switching at high frequency
until the Vaux voltage reaches its regulation level of 20 V.
Greeny stops switching until the time period set by the
burst oscillator has expired. At the start of the next burst
period Greeny starts switching at high frequency and
repeats the cycle again.
System operation
ON/OFF
To guarantee a stable operation in a burst mode controlled
system a Vaux slope compensation circuit is integrated in
Greeny. The Greeny system delivers a constant voltage to
the secondary load until a burst duty cycle of 40%.
The Greeny system can be switched on and off by means
of a low cost, low voltage switch. In the Off mode the
startup current source and power switch are disabled. In
the On mode, Greeny delivers the startup current for the
supply capacitor and after the supply voltage reaches the
startup level Greeny activates the power switch.
DATA TRANSFER
The TEA1501 has a data transfer function which makes
communication from the isolated secondary side to the
non-isolated primary side of the transformer possible,
without using an opto-coupler. This communication
function is activated by increasing the secondary load.
With this data transfer function a main power supply can
be switched on and off by the Greeny system.
STARTUP
The startup is realized with a high voltage startup current
source instead of a dissipative bleeder resistor which is
commonly used by low voltage control ICs. When Greeny
is switched on, the startup current source is enabled and
starts charging the Vaux capacitor. The startup current
level is high and accurate (typical 1.8 mA) which results in
a well-defined and short startup time, within 0.25 s. After
the supply voltage reaches the startup level the current
source is switched off and the Vaux capacitor supplies the
chip. Reducing the power dissipation in the current source
to zero after startup is one of the green features of Greeny.
The power delivered to the secondary and auxiliary
winding is proportional to the number of primary current
pulses per burst period, provided that the converter
operates in discontinuous conduction mode. During each
burst period the number of primary current pulses is
counted. A threshold (Ndata) of 56 pulses is integrated. The
clamp level on the OOD pin is set to data-on level from
data-off level in case the Ndata threshold is passed. This
data-on clamp level can be sensed by the on/off input of a
main supply control IC of the GreenChip family. The
data-on clamp level is maintained until a burst appears
with a number of pulses below the Ndata threshold.
OPERATION
After startup the flyback converter starts delivering energy
to the secondary and auxiliary winding. The Greeny
system works with fixed switching frequency and fixed
peak current.
1998 Aug 19
5
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
Waveforms of Greeny in the Off mode, Startup mode and Operation mode
V
Drn
detection
level
V
Src
regulation
level
Vaux
V
V
out
V
Bt
on/off
V
OOD
level
switch
period
burst on
time
switch on
time
burst period
MGM828
off
startup
operation
Fig.4 Waveforms of Greeny in the Off mode, Startup mode and Operation mode.
1998 Aug 19
6
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
CIRCUIT BLOCK DESCRIPTION
On/Off/Data section
Startup current source
The startup sequence is carried out using an accurate
startup current source. The startup current flows from the
Drn pin to the Vaux pin via the startup current source and
charges the Vaux capacitor. When Vaux reaches the
startup threshold the startup current is switched off and the
flyback converter starts operating and the output voltage
rises. The Vaux capacitor must be capable of supplying
the entire supply current (IVaux(LOW)) until the output
voltage is in regulation. From that moment the Vaux
capacitor is charged by the flyback converter via the
auxiliary winding.
The On/Off/Data block contains a comparator for the on/off
level and is active if the drain voltage is above 50 V (DC).
The typical current consumption in Off mode is 40 µA. The
data signal changes the clamp level on the OOD pin to
indicate data transfer: low clamp level for data-off and high
clamp level for data-on.
Vaux management
The Vaux management block is active when Greeny is in
the On mode. This Vaux management block senses the
Vaux voltage and determines the state of Greeny: startup
or normal operation. During startup the following circuits
are active: On/Off/Data section, Reference block (partial),
Vaux management, Temperature protection and the
Startup current source.
Reference block
The reference block contains a bandgap circuit which
determines all the accurate and temperature independent
reference voltages and currents. It defines the voltage
detection level for the primary current comparator and it
defines the voltage at the Ref pin. The value of the
reference resistor determines the burst frequency, the
switching frequency and the leading edge blanking time.
handbook, halfpage
operation
Temperature protection
I
Vaux
The temperature protection circuit senses the chip
temperature using a proportional to absolute temperature
voltage (Vptat) generated in the reference block. If the chip
temperature exceeds 140 °C the power switch and the
startup current source are disabled. When the chip cools
down below 100 °C, the startup circuit is enabled again.
12 V
16 V
start
20 V
UVLO
V
V
V
Vaux(max) Vaux
Switch oscillator
I
start
startup
The switch oscillator determines the switching frequency
and the maximum on-time of the power switch. The
maximum on-time is set at 66% of the switching period.
The switching frequency is determined by the reference
resistor at the Ref pin and an internal capacitor. The
switching frequency can be adjusted in a range from
20 to 50 kHz, thus above the audible spectrum.
MGM824
Fig.5 IVaux versus VVaux
.
1998 Aug 19
7
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
Burst oscillator
Modulator
The burst oscillator generates a triangular wave signal for
determination of the burst frequency. The burst frequency
is determined accurately and temperature independent by
the externally connected reference resistor RRef and burst
capacitor CBt.
The modulator determines the regulation level of the Vaux
voltage. For a burst duty cycle from 0 to 40% the Vaux
voltage is regulated to 20 V. For stable operation in burst
mode a decrease in regulation voltage is integrated for a
burst duty cycle above 40%. At 100% burst duty cycle the
regulation voltage is 17.5 V.
Gate driver
The gate driver switches the power switch. The power
switch is turned on at the beginning of every oscillator
cycle and is turned off by the primary current comparator
or by the maximum on-time. The power switch is also
prevented from turning on if the Vaux voltage has reached
its regulation level or in case of active over temperature
protection or in case of active under voltage lockout
protection.
MGM826
handbook, halfpage
regulation
level Vaux
(V)
S
20
Vaux
17.5
Power switch
The power switch is an integrated high voltage LDMOST
with a Rdson of 40 Ω, a maximum peak drain voltage of
650 V, a maximum continuous drain voltage of 500 V and
a maximum drain current of 0.25 A.
0
CP
Vaux
burst duty cycle (%)
Primary current comparator
40
0
100
The primary current comparator senses the voltage across
the external sense resistor RSrc which reflects the primary
current. The detection level of the comparator is 0.5 V. The
power switch is switched off quickly when the source
voltage exceeds this detection level. The comparator has
a typical propagation delay of 80 ns. If the dV/dt of the
drain voltage has to be limited for EMI reasons, a capacitor
can be connected between the Drn and Src pins of
Greeny. The discharge current of this EMI capacitor does
not flow through the sense resistor RSrc and does not
activate the comparator.
Fig.6 Regulation level VVaux versus burst duty cycle.
Counter
The power delivered to the load (auxiliary and secondary)
is a function of the number of energy pulses per burst,
according to the following formula:
Leading edge blanking
2 × fburst × N
prim
1
2
Pload = η × × L × I
--
To prevent the power switch from switching off due to the
discharge current of the capacitance on the Drn pin a
Leading Edge Blanking (LEB) circuit has been
implemented. The leading edge blanking time is defined
as the maximum duration time needed to discharge the
capacitance at the drain of the power switch. The leading
edge blanking time is determined by the reference resistor
to obtain an accurate and temperature independent time.
The LEB time tracks with the period time of the switch
oscillator.
p
Where η is the efficiency, Lp is the primary inductance, Iprim
is the primary peak current, fburst is the burst frequency and
N is the number of pulses in one burst period.
The counter counts the number of pulses in each burst
period and detects if the Ndata threshold is passed. The
counter state is used for the data transfer function and for
the supply current tracking.
1998 Aug 19
8
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
Supply current tracking
For obtaining good load regulation, especially with low
cost transformers, a tracking circuit is included. The
tracking circuit makes the supply current of Greeny a
function of the secondary load. This makes the voltage
drop across the series resistance of the auxiliary winding
proportional to the voltage drop across the series
resistance of the secondary winding. Therefore, the
secondary output voltage tracks with the Vaux regulation
voltage.
The tracking starts at a counter state of 28. For a counter
state from 28 up to 112 (typical values) the supply current
of Greeny rises linearly with the counter state according to
the following formula (see Fig.7).
IVaux = ktracking × N
For counter states of 112 and higher the supply current
remains on its maximum value.
MGM825
handbook, halfpage
I
Vaux
(mA)
I
6.7
Vaux(HIGH)
I
1.7
Vaux(LOW)
N
56
data
counter state
112
28
Fig.7 IVaux versus counter state.
1998 Aug 19
9
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
DESIGN EQUATIONS
Primary peak current
Burst oscillator
The power threshold for data transfer is determined by the
burst frequency, according to the following formula:
The primary peak current is determined by the sense
resistor RSrc and may be calculated as shown below:
Pdata = η × × L × I
2 × fburst × Ndata
prim
1
--
p
2
Vdetect
RSrc
=
---------------
The power ratio between Pdata and Pout(max) is therefore:
Iprim
Pdata
f burst × Ndata
=
---------------------
Pout(max)
------------------------------
fswitch
MINIMUM VALUE OF RSrc
The maximum drain current is 0.25 A, this results in a
minimum value for resistor RSrc of 2.0 Ω.
The desired Pdata/Pout(max) ratio determines the burst
frequency. For example, when the desired Pdata/Pout(max)
ratio is 0.5 then the burst frequency has to be 450 Hz at
50 kHz switching frequency. The burst frequency can be
adjusted by the reference resistor RRef and the burst
capacitor CBt as shown below:
Switch oscillator
The maximum output power of the converter is a function
of the switching frequency, provided that the converter
operates in discontinuous conduction mode.
1
f burst
=
---------------------------------------------
2 × fswitch
prim
1
2
k
burst × RRef × CBt
P out(max) = η × × L × I
--
p
MINIMUM VALUE OF CBt
Where η is the efficiency, Lp is the primary inductance,
prim is the primary peak current and fswitch is the switching
I
The minimum value for capacitor CBt is 3.3 nF.
frequency.
The switching frequency can be adjusted between
handbook, halfpage
900
MGM827
20 and 50 kHz by the reference resistor RRef
:
1
fswitch
=
---------------------------------
switch × RRef
f
= 50 kHz
switch
k
f
burst
(Hz)
RANGE OF RRef VALUES
The minimum value for resistor RRef is 24 kΩ, the
maximum value is 62 kΩ.
450
f
= 20 kHz
switch
Leading edge blanking
The leading edge blanking time is determined by the
reference resistor RRef as shown below:
180
0
t LEB = tconstant + (kLEB × RRef
)
0
0.5
1
P
/P
data out(max)
The leading edge blanking time consists of a constant time
and a time which tracks with the period time of the switch
oscillator
Fig.8 fburst versus Pdata/Pout(max)
.
1998 Aug 19
10
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134). All voltages are referred to ground. Positive
currents flow into the IC. All pins not mentioned in the voltage list are not allowed to be voltage driven.
SYMBOL
Voltages
PARAMETER
MIN.
MAX.
UNIT
VDrn
VSrc
VVaux
VBt
commutation voltage peak: Vin + Vzener
−0.4
−0.4
−0.4
−0.4
+650
V
V
V
V
+12
+24
+5
Currents
IDrn
ISrc
IOOD
IRef
IBt
0
0.25
0.25
+ 5
A
0
A
−1
−1
−1
mA
mA
mA
+0
+0.05
Power and temperature
Ptot
Tj
total power dissipation, Tamb < 70 °C
−
0.7
W
junction temperature
−10
−40
−10
+140
+150
+70
°C
°C
°C
Tstg
Tamb
storage temperature
operating ambient temperature
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
VALUE
96
UNIT
°C/W
Rth(j-a)
thermal resistance from junction to ambient
in free air
1998 Aug 19
11
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
CHARACTERISTICS
Conditions unless otherwise specified: −10 °C <Tj < 80 °C, RRef = 24 kΩ − 0.1%; 12 V < VVaux <20 V. All voltages are
referred to ground. Positive currents flow into the IC.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
On Off Data section
Von/off
on/off level Greeny
data off level
0.4
0.7
0.9
V
Vdata(off)
Vdata(off)
Vdata(on)
20 µA < IOOD < 100 µA
IOOD = 2.5 mA
0.9
1.4
3.5
1.3
1.7
4.0
1.6
2.0
4.5
V
V
V
data off level
data on level
20 µA < IOOD < 100 µA
Vaux management
Vstart
start voltage
Under Voltage Lockout
15
16
12
17
V
V
UVLO
11.3
12.7
Startup current source
Istart
startup current, Vaux pin
VVaux = 0 V, VOOD > 0.9 V
VVaux = 8 V, VOOD > 0.9 V
VVaux = 15 V, VOOD > 0.9 V
VVaux = 0 V, VOOD > 0.9 V
VOOD < 0.4 V, VDrn = 300 V
−3.0
−2.4
−1.9
1.8
−2.2
−1.8
−1.3
2.6
−1.5
−1.2
−0.8
3.4
mA
mA
mA
mA
µA
Istart
startup current, Vaux pin
startup current, Vaux pin
drain current during startup
drain current in Off mode
Istart
IDrn(on)
IDrn(off)
Reference block
−
40
100
VRef
reference voltage
1.18
1.23
1.28
V
Temperature protection
Tprot
Thys
thermal shutdown
thermal hysteresis
130
35
140
40
150
45
°C
°C
Switch oscillator
kswitch
switch oscillation constant
maximum switch duty cycle
0.67
60
0.82
66
1.00
72
µs/kΩ
δcy(max)
%
Burst oscillator
kburst
burst oscillation factor
7.0
50
7.5
56
8.1
62
Counter
Ndata
number of current pulses for
data transfer
Power switch
VBD
Rdson
tf
breakdown voltage
IDrn(off) + 100 µA
650
25
−
−
−
V
on resistance
fall time
Tj = 25 °C, IDrn = 80 mA
VDrn = 300 V, Rdr = 2 kΩ
VDrn = 300 V, Rdr = 2 kΩ
40
50
100
55
−
Ω
ns
ns
tr
rise time
−
−
1998 Aug 19
12
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Comparator
Vdetect
tPD
primary peak detection level
propagation delay
0.47
0.50
0.53
V
dVsource/dt = 0.5 V/µs
−
80
−
ns
Leading edge blanking
tconstant
constant part of the LEB time,
independent of Rref
100
4
250
5
400
6
ns
kLEB
LEB time constant
ns/kΩ
Modulator
VVaux(max) maximum VVaux
non-compensation
δburst < CPVaux
19
20
21
V
CPVaux
SVaux
compensation point
slope of VVaux(max)
∆VVaux(max)/(100% − CPVaux
37
34
40
42
43
50
%
,
δburst < CPVaux
mV/%
)
Voffset
offset voltage on VVaux(max) at
compensation point
−
−0.1
−
V
Supply current tracking
IVaux(LOW) low supply current non-tracking N < 1⁄2Ndata
ktracking tracking constant
1.2
48
1.7
60
2.5
72
mA
µA
IVaux(HIGH) high supply current non-tracking N > 2Ndata
5.4
6.7
8.0
mA
QUALITY SPECIFICATION
Quality according to SNW/FQ-611 part E.
The ESD voltage according to the Human Body Model is limited to 1200 V for the Drn pin.
1998 Aug 19
13
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
When the switch S1 is opened the voltages on the OOD
pin of Greeny and the OOB pin of the GreenChip are 0 V.
The power supply and the power on/off indicator (LED) are
switched off immediately and the power supply is in the
Off mode again.
LOW POWER STANDBY APPLICATION
Greeny can operate as a stand alone low power supply or
as a standby power supply incorporated in a main SMPS.
Together with a GreenChip TEA1504 a power supply
with ultra low standby power can be built where Greeny
supplies the microprocessor with the power on/off
indicator and the GreenChip controls the main power
supply during normal operation.
Power supply in Standby mode
When switch S1 is closed Greeny is in the On mode and
supplies the microprocessor and the power on/off
indicator. The microprocessor controls the state of switch
S2. The power supply is in the Standby mode when switch
S2 is open.
Operation modes
The power supply with a Greeny TEA1501 and a
GreenChip TEA1504 can be in three different modes,
according to the state of switches S1 and S2 (see Fig.9).
The output power of Greeny is determined by the
microprocessor and is below the Pdata level when switch
S2 is open. The clamp level on the OOD pin of Greeny is
the data-off level with a typical value of 1.3 V which is
below the on/off level of the GreenChip which has a
typical value of 2.5 V. The GreenChip remains in Off
mode.
Table 1 Operation modes of power supply
S1
S2
OPERATION MODE
Open
Open or Greeny is in Off mode,
Closed
Open
GreenChip is in Off mode, Power
supply is in Off mode.
Power supply in Normal operation mode
Closed
Closed
Greeny is On mode,
GreenChip is in Off mode,
Power supply is in Standby mode.
The power supply changes its operation mode from
Standby to Normal operation by closing the switch S2. The
switch S2 is placed at the isolated secondary side of the
Greeny and controls, via the data transfer function of
Greeny, the operation mode of the power supply.
Closed
Greeny is in On mode,
GreenChip is in On mode,
Power supply is in Normal
operation mode.
When the microprocessor closes switch S2 the output
power of Greeny is increased. The output power exceeds
the Pdata level and the clamp level on the OOD pin of
Greeny is set to data-on level with a value of 4 V. The
voltage on the OOB pin of the GreenChip is above its
on/off level of 2.5 V and the GreenChip starts up.
Power supply in Off mode
The power supply can be switched on and off by means of
the functional switch S1. This functional switch replaces
the generally used high voltage mains switch. The power
supply is in Off mode if the switch S1 is open.
The power supply enters Normal operation mode, Greeny
supplies the microprocessor and the GreenChip supplies
the main load.
If the switch S1 is closed the voltage applied on the OOD
pin of Greeny is above the on/off level (0.7 V) and Greeny
starts up, the power supply enters the Standby mode or
the Normal operation mode.
1998 Aug 19
14
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
APPLICATION DIAGRAM WITH GREENY TEA1501 AND GREENCHIP TEA1504
(1)
TM
GreenChip output
S1
OOB
Dem
n.c.
Vin
n.c.
n.c.
Gnd
n.c.
Driver
Isense
Vaux
DS
TEA1504
Vctrl
Iref
Greeny output
Src
OOD
Bt
Drn
MICRO-
PROCESSOR
S2
n.c.
LED
TEA1501
Gnd
Vaux
Ref
MGM822
(1)
(1) Secondary earthing points are isolated from their primary earthing points.
Fig.9 Application diagram with greeny TEA1501 and GreenChip TEA1504.
1998 Aug 19
15
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
PACKAGE OUTLINE
DIP8: plastic dual in-line package; 8 leads (300 mil)
SOT97-1
D
M
E
A
2
A
A
1
L
c
w M
Z
b
1
e
(e )
1
M
H
b
b
2
8
5
pin 1 index
E
1
4
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
(1)
Z
A
A
A
2
(1)
(1)
1
w
UNIT
mm
b
b
b
c
D
E
e
e
L
M
M
H
1
2
1
E
max.
min.
max.
max.
1.73
1.14
0.53
0.38
1.07
0.89
0.36
0.23
9.8
9.2
6.48
6.20
3.60
3.05
8.25
7.80
10.0
8.3
4.2
0.51
3.2
2.54
0.10
7.62
0.30
0.254
0.01
1.15
0.068 0.021 0.042 0.014
0.045 0.015 0.035 0.009
0.39
0.36
0.26
0.24
0.14
0.12
0.32
0.31
0.39
0.33
inches
0.17
0.020
0.13
0.045
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
92-11-17
95-02-04
SOT97-1
050G01
MO-001AN
1998 Aug 19
16
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “Data Handbook IC26; Integrated Circuit Packages”
(order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
1998 Aug 19
17
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1998 Aug 19
18
Philips Semiconductors
Preliminary specification
Greeny; GreenChip
TEA1501
NOTES
1998 Aug 19
19
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© Philips Electronics N.V. 1998
SCA60
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
295102/750/01/pp20
Date of release: 1998 Aug 19
Document order number: 9397 750 03371
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The TEA1501 (Greeny) is the low power member of the GreenChipTM family and is especially designed for standby switched mode power
supply applications. Greeny incorporates all the necessary functions for an efficient and low cost power supply for 90 to 276 V AC universal
input. Greeny is a monolithic integrated circuit and is available in a DIP8 package. The design is made in the BCD_PowerLogic750 process
and includes the high voltage switching device. Using only 7 functional pins, Greeny contains extensive control functions to form a flexible
and a reliable power supply with a minimum of external components. Greeny operates in a flyback topology with a fixed switching
frequency, constant primary peak current control and regulates the output voltage in burst mode. Applications include low power supplies
and standby power supplies as used in television, monitor, lighting electronics and domestic appliances with an output power from 0.1 to 3
W.
PC/PC-peripherals
Cross reference
Models
Packages
Application notes
Selection guides
Other technical documentation
End of Life information
Datahandbook system
Features
l Direct off-line operation (90 to 276 V AC)
l Low external component count
Relevant Links
l Integrated high voltage startup current source for a fast startup within 0.25 s
l Integrated power switch: 650 V40 W0.25 A
l Programmable primary peak current
l Data transfer from isolated secondary side to non-isolated primary side via the transformer
l On/Off function replaces expensive mains switch by a functional switch.
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TEA1501
TEA1501
Green features
l Low current consumption in Off mode, typical 40 µA
l Efficient burst mode operation, for 0.1 to 3 W output power.
Protection features
l Cycle-by-cycle current control with programmable primary peak current
l Over-voltage protection
l Under-voltage lockout
l Over-temperature protection.
Datasheet
File
size
(kB)
Publication
release date Datasheet status
Page
count
Type nr. Title
TEA1501
Datasheet
Download
19-Aug-98
Preliminary
Specification
20
116
Greeny; GreenChipÔ
Products, packages, availability and ordering
North American
Partnumber
Order code
(12nc)
Partnumber
marking/packing
package device status
buy online
TEA1501/N1 TEA1501N
TEA1501T/N1 TEA1501TD
9352 568 80112 Standard Marking * Tube
9352 616 95112 Standard Marking * Tube
SOT97 Samples available
SOT176 Samples available
Standard Marking * Reel Pack,
TEA1501TD-T
9352 616 95118
SMD, 13"
SOT176 Samples available
Find similar products:
TEA1501 links to the similar products page containing an overview of products that are similar in function or related to the part
number(s) as listed on this page. The similar products page includes products from the same catalog tree(s) , relevant selection guides and
products from the same functional category.
Copyright © 2000
Royal Philips Electronics
All rights reserved.
Terms and conditions.
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