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MSA2805S の電気的特性と機能

MSA2805SのメーカーはInterpointです、この部品の機能は「(MSA28xxS) DC/DC CONVERTERS」です。


製品の詳細 ( Datasheet PDF )

部品番号 MSA2805S
部品説明 (MSA28xxS) DC/DC CONVERTERS
メーカ Interpoint
ロゴ Interpoint ロゴ 




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MSA2805S Datasheet, MSA2805S PDF,ピン配置, 機能
FEATURES
• –55° to +125°C operation
DC/DC CONVERTERS
• 16 to 40 VDC input
• Fully isolated
28 VOLT INPUT
• Optocoupler feedback
• Fixed frequency, 550 kHz typical
(400 kHz typ. 60 V output model)
• Topology – Flyback
• 50 V for up to 50 ms transient protection
• Inhibit function
• Indefinite short circuit protection
• Up to 76% efficiency, 16 W/in3
Size (max.): 1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm)
Weight:
15 grams maximum.
Screening: Standard, ES, or 883 (Class H).
MSA SERIES
5 WATT
MODELS
VDC OUTPUT
SINGLE
5
5.2
12
15
60
DUAL
±5
±12
±15
DESCRIPTION
The MSA Series™ of high frequency DC/DC converters offers a new
standard of performance for low power, military/aerospace grade
DC/DC converters. MSA parts provide up to 5 watts output power
over the full military temperature range with up to 76% efficiency.
Thick-film hybrid techniques provide military/aerospace reliability
levels and optimum miniaturization. The hermetically sealed case is
only 1.075 by 1.075 inches — with a height of only 0.270 inches.
Power density for the MSA Series parts is 16 watts per cubic inch.
www.DataSheet4TUh.ceomMSA Series’ small size, low height, and hermetically sealed
metal enclosures make them ideal for use in military, aerospace and
other high reliability applications. Units are available with standard,
screening, “ES”, and fully compliant SMD “883” screening. See
page 8 for screening options and descriptions.
CONVERTER DESIGN
The MSA converters are switching regulators that use a flyback
converter design with a constant switching frequency of 550 kHz.
They are regulated, isolated units using a pulse width modulated
topology and built as high reliability thick-film hybrids. Isolation
between input and output circuits is provided with a transformer in
the forward power path and an optical link in the feedback control
loop. Excellent input line transient response and audio rejection is
achieved by an advanced feed-forward compensation technique.
Negative output regulation is maintained by tightly coupled
magnetics. Up to 4 watts, 80% of the total output power, is available
from either output, provided that the opposite output is simultane-
ously carrying 20% of the total power. Each output must carry a
minimum of 20% of the total output power in order to maintain spec-
ified regulation on the negative output. Predictable current limit is
accomplished by direct monitoring of the output load current, which
results in a constant current output above the overload point.
Internal input and output filters eliminate the need for external
capacitors.
WIDE VOLTAGE RANGE
The MSA converters are designed to provide full power operation
over a full 16 to 40 VDC voltage range. Operation below 16 volts,
including MIL-STD-704E emergency power conditions is possible
with derated power. Please refer to the low line dropout graphs
(Figures 17 and 18) for details. A low voltage lockout feature keeps
the converter shutdown below approximately 13 VDC to ensure
smooth initialization.
IMPROVED DYNAMIC RESPONSE
The MSA feed-forward compensation system provides excellent
dynamic response and noise rejection. Audio rejection is typically 50
dB. The minimum to maximum step line transient response is typi-
cally less than 1%.
INHIBIT FUNCTION
MSA converters provide a TTL open collector-compatible inhibit
feature that can be used to disable internal switching and inhibit the
unit’s output. Inhibiting in this manner results in low standby current,
and no generation of switching noise.
The converter is inhibited when the TTL compatible low (0.8 V) is
applied to the inhibit pin. The unit is enabled when the pin, which is
internally connected to a pull-up resistor, is left unconnected or is
connected to an open collector gate. The open circuit output voltage
associated with the inhibit pin is 9 to 11 V. In the inhibit mode, a
maximum of 4 mA must be sunk from the inhibit pin.
UNDERVOLTAGE LOCKOUT AND TRANSIENT
PROTECTION
Undervoltage lockout helps keep system current levels low during
initialization or re-start operations. They can withstand short term
transients of up to 50 volts without damage.
1

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MSA2805S pdf, ピン配列
DC/DC CONVERTERS
MSA SERIES
5 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT1
OUTPUT POWER1
+VOUT
–VOUT
VIN = 16 to 40 VDC
Tc = –55°C to +125°C
VIN = 16 to 40 VDC
Tc = –55°C to +125°C
OUTPUT RIPPLE VOLT.
10 kHz - 2 MHz
LINE REGULATION
Vin = 16 to 40 VDC
LOAD REGULATION
NO LOAD TO FULL
CROSS REGULATION2
Tc = –55°C to +125°C
+VOUT
–VOUT
Tc = –55°C to +125°C
+VOUT
–VOUT
+PO = 20 - 80 %, –PO = 80 - 20%
–PO = 20 - 80 %, +PO = 80 - 20%
INPUT VOLTAGE
Tc = –55°C to +125°
+PO = 50 - 10 %, –PO = 50%
–PO = 50 - 10 %, +PO = 50%
NO LOAD TO FULL
˜CONTINUOUS
INPUT CURRENT
TRANSIENT 50 msec
NO LOAD
Tc = –55°C to +125°C
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INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT3, 4
STEP LOAD
RESPONSE4, 5
FULL LOAD
INHIBITED
10 kHz TO 10 MHz
Tc = –55°C to +125°C
POWER DISSIPATION
SHORT CIRCUIT
RECOVERY
50% - 100% - 50% BALANCED
TRANSIENT
STEP LINE RESP.4, 5
START-UP
RECOVERY
16 TO 40 VDC
TRANSIENT 40 TO 16 VDC
16 TO 40 VDC
RECOVERY 40 TO 16 VDC
DELAY
OVERSHOOT
MSA 2805D
MIN TYP MAX
4.95 5.00 5.05
4.9 5.0 5.1
MSA2812D
MIN TYP
11.88 12.00
11.76 12.00
MAX
12.12
12.24
MSA2815D
MIN TYP MAX
14.85 15.00 15.15
14.70 15.00 15.30
— ±500 800
— ±208 333
— ±167 267
——5
——
5
——
5
— — 150 — 40 140 — 60 150
— 10 25
— 40 75
— 10 50
— 10 50
— 40 180 — 40 180
— 10 50
— 10 50
— 10 50
— 50 200 — 50 200 — 50 200
— 10 20 — 8 15 — 7 15
—58
— 3.7
6
—3
6
16 28 40
— — 50
— 30 35
— 248 —
—35
— 25 80
— 30 160
68 72 —
16 28
40
— — 50
— 33 58
— 235 —
—3
5
— 25 100
— 30 150
69 75
16 28 40
— — 50
— 38 60
— 235 —
—3
5
— 25 100
— 30 150
70 75 —
— 1.3 1.8
— — 50
— 1.3 1.7
— 1 10
— 1.3 1.6
— 1 10
— ±150
— ±300 ±750
— ±300 ±750
— — 100 — 200 500 — 500 1250
— — ±750 — ±50 ±125 — ±150 ±375
— — ±500 — ±50 ±125 — ±100 ±250
— — 1200 — 150 375 — 250 625
— — 1200 — 400 1000 — 800 2000
— — 25 — 3 10 — 3 10
— — 500 — 0 120 — 0 150
UNITS
VDC
mA
W
mV p-p
mV
mV
%
VDC
V
mA
mA p-p
%
W
ms
mV
µs
mV pk
µs
ms
mV pk
Notes
1. Up to 4 watts (80% of full power) is available from either output providing the
opposite output is carrying 20% of total power.
2. Shows regulation effect on the minus output during the defined cross loading
conditions. See Figures 15 and 16.
3. Indefinite short circuit protection not guaranteed above 125°C (case).
4. Recovery time is measured from application of the transient to point at which
VOUT is within 1% of VOUT at final value.
5. Transition time >10µs.
3


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MSA2805S 電子部品, 半導体
MSA SERIES
5 WATT
DC/DC CONVERTERS
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
VIN
+VOUT
VOUT
500µs/div
MSA2815D TURN-ON INTO NO LOAD
FIGURE 14
10
8
6
4 2812D
2
0
2815D
2
4
6
8
10
90/10 70/30 50/50 30/70 10/90
OUTPUT LOAD (+VOUT % / VOUT %)
9010% LOAD on +V, 10-90% LOAD on V
MSA DUAL CROSS REGULATION
FIGURE 15
5
4
3 2812D
2
COND A
1
0 2815D
1
COND B
2
3 2812D
4
5
10 20 30 40 50
OUTPUT LOAD (%)
COND. A: 50% LOAD +V; 10% to 50% V
COND. B: 50% LOAD V; 10% to 50% +V
MSA DUAL CROSS REGULATION
FIGURE 16
www.DataSheet4U.com
17
MSA2805S
16
15
MSA2812S
14
13
MSA2815S
12
123456
OUTPUT POWER (Watts)
50 mV DROP
LOW LINE DROPOUT VS. LOAD
FIGURE 17
17
MSA2815D
16
15
14
13
MSA2812D
12
123456
OUTPUT POWER (Watts)
50 mV DROP
LOW LINE DROPOUT VS. LOAD
FIGURE 18
6

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部品番号部品説明メーカ
MSA2805S

(MSA28xxS) DC/DC CONVERTERS

Interpoint
Interpoint


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