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PDF ( 数据手册 , 数据表 ) EA1530AT

零件编号 EA1530AT
描述 TEA1530AT
制造商 NXP Semiconductors
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EA1530AT 数据手册, 描述, 功能
TEA1530AT
GreenChipII SMPS control IC
Rev. 01 — 18 May 2005
www.DataSheet4U.com
Objective data sheet
1. General description
The GreenChip™II is the second generation of green Switched Mode Power Supply
(SMPS) controller ICs. Its high level of integration allows the design of a cost effective
power supply with a very low number of external components.
The TEA1530AT can be used in Fixed Frequency converter designs for low voltage, high
current applications. At low power (standby) levels, the system operates in cycle skipping
mode which minimizes the switching losses during standby.
The proprietary high voltage BCD800 process makes direct start-up possible from the
rectified universal mains voltage in an effective and green way. A second low voltage
BICMOS IC is used for accurate, high speed protection functions and control.
The TEA1530AT enables highly efficient and reliable supplies to be designed easily.
2. Features
2.1 Distinctive features
s Universal mains supply operation (70 V to 276 V AC)
s High level of integration, resulting in a very low external component count
s Fixed frequency operation
2.2 Green features
s Cycle skipping mode at very low loads; input power < 300 mW at no-load operation for
a typical adapter application
s On-chip start-up current source.
2.3 Protection features
s Safe restart mode for system fault conditions
s Undervoltage protection (foldback during overload)
s IC OverTemperature Protection (OTP) (latched)
s Low and adjustable OverCurrent Protection (OCP) trip level
s Soft (re)start
s Mains voltage-dependent operation-enabling level
s General purpose input for latched or safe restart protection and timing, e.g. to be used
for overvoltage protection (OVP), output short-circuit protection or system OTP.







EA1530AT pdf, 数据表
Philips Semiconductors
TEA1530ATwww.DataSheet4U.com
GreenChipII SMPS control IC
protection is reset. The latch is reset as soon as VCC drops below 4.5 V (typical value)
(this only occurs when the mains has been disconnected). The internal
overtemperature protection will also trigger this latch; see also Figure 1.
A voltage higher than 3 V on pin PROTECT will always latch the IC. This is independent of
the state of the IC.
7.12 OverTemperature protection (OTP)
The IC provides accurate OTP. The IC will stop switching when the junction temperature
exceeds the thermal shutdown temperature. When VCC drops to VUVLO, capacitor CVCC
will be recharged to the Vstart level, however switching will not restart. Subsequently, VCC
will drop again to VUVLO, etc.
Operation only recommences when VCC drops below a level of about 4.5 V (typically,
when Vmains is disconnected for a short period).
7.13 Soft start-up (pin SENSE)
To prevent transformer rattle at start-up or during hiccup, the transformer peak current is
slowly increased by the soft start function. This can be achieved by inserting a resistor
and a capacitor between pin SENSE (pin 6) and sense resistor Rsense. An internal current
source charges the capacitor to Vsense = Iss × Rss (about 0.5 V maximum).
The start level and the time constant of the increasing primary current level can be
adjusted externally by changing the values of Rss and Css.
I primary(max)
=
V-----o--c--p---------(--I---s--s---×-----R----s--s--)-
Rsense
τ = Rss × Css
During the start-up phase, the charging current Iss will flow as long as the voltage on
pin SENSE is below approximately 0.5 V. If the voltage on pin SENSE exceeds 0.5 V, the
soft start current source will start limiting current Iss. At Vstart, the Iss current source is
completely switched off; see Figure 7.
Since the soft start current Iss is subtracted from pin VCC charging current, the Rss value
will affect VCC charging current level by a maximum of 60 µA (typical).
Objective data sheet
Rev. 01 — 18 May 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
8 of 22







EA1530AT equivalent, schematic
Philips Semiconductors
13. Package outline
SO8: plastic small outline package; 8 leads; body width 3.9 mm
TEA1530ATwww.DataSheet4U.com
GreenChipII SMPS control IC
SOT96-1
D
y
Z
8
c
5
EA
X
HE v M A
pin 1 index
1
e
A2
A1
4
bp
wM
Q
(A 3)
A
Lp
L
detail X
θ
0 2.5 5 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
UNIT max. A1 A2 A3 bp
c D(1) E(2) e
HE
L
Lp
Q
mm
1.75
0.25
0.10
1.45
1.25
0.25
0.49
0.36
0.25
0.19
5.0
4.8
4.0
3.8
1.27
6.2
5.8
1.05
1.0
0.4
0.7
0.6
inches
0.069
0.010
0.004
0.057
0.049
0.01
0.019 0.0100 0.20
0.014 0.0075 0.19
0.16
0.15
0.05
0.244
0.228
0.041
0.039
0.016
0.028
0.024
v
0.25
0.01
w y Z (1)
0.25 0.1
0.7
0.3
0.01
0.004
0.028
0.012
θ
8o
0o
Notes
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
2. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included.
OUTLINE
VERSION
SOT96-1
IEC
076E03
REFERENCES
JEDEC
JEITA
MS-012
EUROPEAN
PROJECTION
ISSUE DATE
99-12-27
03-02-18
Fig 11. Package outline SOT96-1 (SO8)
Objective data sheet
Rev. 01 — 18 May 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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