Page 1 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
The Series of non-isolated dc-dc converters
deliver exceptional electrical and thermal
performance in industry-standard footprints for
Point-of-Load converters. Operating from a
2.4Vdc-5.5Vdc input, these are the converters of
choice for Intermediate Bus Architecture (IBA) and
Distributed Power Architecture applications that
require high efficiency, tight regulation, and high
reliability in elevated temperature environments with
low airflow.
非絶縁型DC/DCｺﾝﾊﾞｰﾀの ｼﾘｰｽﾞは業界標準のPOLｺﾝﾊﾞｰﾀ
と同じ端子配列で極めて優れた電気的特性、及び温度特性を提供しま
す。
入力電圧2.4V-5.5Vで動作しますので、このｺﾝﾊﾞｰﾀは、高効率、高い出
力電圧精度、高温、及び風量の少ない環境での高信頼性が要求される
IBA、又はDPAでの使用に最適です。
The FPMR05SR7503*A converter of the
Series delivers 3A of output current at a tightly
regulated programmable output voltage of 0.7525Vdc
to 3.63Vdc. The thermal performance of the
FPMR05SR7503*A is best-in-class: No derating is
needed up to 85℃, under natural convection.
ｼﾘｰｽﾞの FPMR05SR7503*Aは高い電圧精度で0.7525V～
3.63Vの可変を実現します。FPMR05SR7503*Aの温度特性はｸﾗｽ最高
ﾚﾍﾞﾙです。自然対流条件で85℃までﾃﾞｨﾚｰﾃｨﾝｸﾞを必要としません。
This leading edge thermal performance results from
electrical, thermal and packaging design that is
optimized for high density circuit card conditions.
Extremely high quality and reliability are achieved
through advanced circuit and thermal design
techniques and FDK’s state of the art in-house
manufacturing processes and systems.
回路設計、放熱設計、及びﾊﾟｯｹｰｼﾞﾝｸﾞ設計の結果である最先端の温
度特性は、高密度実装回路用に最適化されています。非常に優れた品
質と信頼性は高度な回路設計、温度設計技術、及びFDKの最先端の
自社製造ﾌﾟﾛｾｽによりもたらされます。
Applications
• Intermediate Bus Architecture
中間ﾊﾞｽ構成ｼｽﾃﾑ
• Telecommunications
ﾃﾚｺﾑｼｽﾃﾑ
• Data/Voice processing
ﾃﾞｰﾀ処理ｼｽﾃﾑ
• Distributed Power Architecture
分散型電源ｼｽﾃﾑ
• Computing (Servers, Workstations)
ｺﾝﾋﾟｭｰﾀ関係(ｻｰﾊﾞｰ、ﾜｰｸｽﾃｰｼｮﾝ)
Features
• RoHS compliant RoHS準拠
• Delivers up to 3A (10.89W)
3A (10.89W)まで供給可能
• High efficiency, no heatsink required
高効率-放熱器が不要
• Negative and Positive ON/OFF logic
ON/OFFﾛｼﾞｯｸはﾈｶﾞﾃｨﾌﾞとﾎﾟｼﾞﾃｨﾌﾞ
• Industry-standard SMD footprint
業界標準のSMDﾌｯﾄﾌﾟﾘﾝﾄ
• Small size and low profile: 0.80” x 0.45” x 0.211”
nominal
小型、低背 (20.3 x 11.4 x 5.35mm)
• Coplanarity less than 0.004”
平面度は0.1mm以下
• Tape & reel packaging
梱包はﾃｰﾋﾟﾝｸﾞ仕様
• Programmable output voltage via external resistor
外部接続の抵抗によりﾌﾟﾛｸﾞﾗﾑ可能な出力電圧
• No minimum load required 最小負荷は不要
• Start up into pre-biased output
出力にﾌﾟﾘﾊﾞｲｱｽがあっても起動可能
• Remote ON/OFF ﾘﾓｰﾄON/OFF機能
• Auto-reset output over-current protection
過電流保護機能: 自動復帰
• Auto-reset over-temperature protection
内部加熱保護機能: 自動復帰
• High reliability, MTBF = 1 Million Hours
高信頼性: MTBF = 1 Million Hours
• UL60950 recognition in U.S. & Canada, and CB
Scheme certification per IEC/EN60950 (Pending)
UL60950、CB Scheme 取得 (予定)
• All materials meet UL94, V-0 flammability rating
全ての部品は UL94 V-0に適合
FPMR05SR7503*A
Page 2 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Electrical Specifications 電気的仕様
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise
noted.
注記が無い場合、全ての仕様は指定された入力電圧、負荷、温度範囲で適用されます。
Conditions: Ta=25degC, Airflow=200LFM (1.0m/s), Vin=5.0Vdc, unless otherwise specified.
1Absolute Maximum Ratings 絶対最大定格
Stresses in excess of the absolute maximum ratings may lead to degradation in performance and reliability of
the converter and may result in permanent damage.
絶対最大定格を超えたｽﾄﾚｽは、性能の低下、長期信頼性の低下、及びﾓｼﾞｭｰﾙの破損を引き起こすことがあります。
PARAMETER NOTES MIN TYP MAX UNITS
ABSOLUTE MAXIMUM RATINGS1
Input Voltage Continuous -0.3 6 Vdc
Operating Temperature Ambient temperature -40 85 °C
Storage Temperature -55 125 °C
Output Voltage 0.7525 3.63 Vdc
FEATURE CHARACTERISTICS
Switching Frequency － 300 － KHz
Output Voltage Programming Range By external resistor. See trim table-1 0.7525 3.63 Vdc
Turn-On Delay Time Full resistive load
with Vin (module enabled, then Vin applied) From Vin=Vin(min) to 0.1*Vout(nom) 5 ms
with Enable (Vin applied, then enabled) From enable to 0.1*Vout(nom) 5 ms
Rise Time (Full resistive load) From 0.1*Vout(nom) to 0.9*Vout(nom) 5 ms
ON/OFF Control (Negative Logic) See Page26. Part Numbering Scheme
Module Off 2.4 Vin Vdc
Module On -5 0.8 Vdc
ON/OFF Control (Positive Logic) See Page26. Part Numbering Scheme
Module Off -5 Vin -1.6 Vdc
Module On Vin-0.8 Vin Vdc
Page 3 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Electrical Specifications (Continued) 電気的仕様 (続き)
Conditions: Ta=25degC, Airflow=200LFM (1.0m/s), Vin=5.0Vdc, unless otherwise specified.
PARAMETER NOTES MIN TYP MAX UNITS
INPUT CHARACTERISTICS
Operating Input Voltage Range Vout ≦ 1.8V 2.4 5 5.5 Vdc
1.8V < Vout ≦ 2.5V 3.3 5 5.5 Vdc
Vout ≧ 3.3V (ALL) 4.5 5 5.5 Vdc
Input Under Voltage Lockout
Turn-on Threshold 2.2 2.4 Vdc
Turn-off Threshold 1.95 2.1 Vdc
Maximum Input Current 3Aout at Vin min
Vout=3.3V 2.35 Adc
Vout=2.5V 2.45 Adc
Vout=2.0V 1.99 Adc
Vout=1.8V 2.47 Adc
Vout=1.5V 2.09 Adc
Vout=1.2V 1.71 Adc
Vout=1.0V 1.46 Adc
Vout=0.7525V 1.14 Adc
Input Stand-by Current (module disabled) 2 mA
Input No Load Current Vout=3.3V 31 mA
Vout=2.5V 35 mA
Vout=2.0V 33 mA
Vout=1.8V 34 mA
Vout=1.5V 28 mA
Vout=1.2V 27 mA
Vout=1.0V 21 mA
Vout=0.7525V 18 mA
Input Reflected-Ripple Current See Fig. G for setup (BW=20MHz) 30 mAp-p
Page 4 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Electrical Specifications (Continued) 電気的仕様 (続き)
Conditions: Ta=25degC, Airflow=200LFM (1.0m/s), Vin=5.0Vdc, unless otherwise specified.
PARAMETER NOTES MIN TYP MAX UNITS
OUTPUT CHARACTERISTICS
Output Voltage Set Point (no load) -1.5 Vout +1.5 %Vout
Output Regulation
Over Line Full resistive load +/- 0.1 %Vout
Over Load From no load to full load +/- 0.3 %Vout
Output Voltage Range
(Over all operating input voltage, resistive load
and temperature conditions until end of life)
-2.5 +2.5 %Vout
Output Ripple and Noise BW=20MHz Over line, load and temperature (Fig. F)
Peak to Peak Vout=3.3Vdc 25 50 mVp-p
External Load Capacitance Plus full load (resistive)
Min ESR > 1m 1000 µF
Min ESR > 10m 2000 µF
Output Current Range 0 3 A
Output Current Limit Inception (Iout) Vout=3.3Vdc 5.4 A
Output Short-Circuit Current Short=10m, Vout=3.3Vdc set 2.4 Arms
DYNAMIC RESPONSE
Iout step from 1.5A to 3A with di/dt=5A/µS Co=47µF x 2 ceramic + 1µF ceramic 100 mV
Setting time (Vout < 10% peak deviation) 20 µS
Iout step from 3A to 1.5A with di/dt=-5A/µS Co=47µF x 2 ceramic + 1µF ceramic 100 mV
Setting time (Vout < 10% peak deviation) 20 µS
EFFICIENCY Full load (3A)
Vout=3.3Vdc 94.0 %
Vout=2.5Vdc 92.5 %
Vout=2.0Vdc 91.0 %
Vout=1.8Vdc 90.0 %
Vout=1.5Vdc 88.5 %
Vout=1.2Vdc 87.0 %
Vout=1.0Vdc 84.5 %
Vout=0.7525Vdc 80.5 %
Page 5 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Input and Output Impedance
The FPMR05SR7503*A converter should be
connected to a DC power source using a low
impedance input line. In order to counteract the
possible effect of input line inductance on the stability
of the converter, the use of decoupling capacitors
placed in close proximity to the converter input pins is
recommended. This will ensure stability of the
converter and reduce input ripple voltage. Although
low ESR Tantalum or other capacitors should
typically be adequate, very low ESR capacitors
(ceramic, over 100µF) are recommended to minimize
input ripple voltage. The converter itself has on-board
internal input capacitance of 2x2.2µF with very low
ESR (ceramic).
FPMR05SR7503*Aと入力電源間は低ｲﾝﾋﾟｰﾀﾞﾝｽで接続してください。ｺ
ﾝﾊﾞｰﾀの安定性に影響のある入力ｲﾝﾀﾞｸﾀﾝｽを抑えるため、ｺﾝﾊﾞｰﾀの
入力ﾋﾟﾝの近傍にﾃﾞｶｯﾌﾟﾘﾝｸﾞｺﾝﾃﾞﾝｻを付加することをお勧めします。こ
れによりｺﾝﾊﾞｰﾀの安定動作を確実にし、入力ﾘｯﾌﾟﾙ電圧を抑制します。
低ESRﾀﾝﾀﾙ、又はその他のｺﾝﾃﾞﾝｻも一般的には問題ありませんが、
入力ﾘｯﾌﾟﾙを最小にするためには、非常に低ESRｺﾝﾃﾞﾝｻ(ｾﾗﾐｯｸで100
μF以上)を推奨します。ｺﾝﾊﾞｰﾀ自身は入力回路に極低ESRの2x2.2μF
ｾﾗﾐｯｸ入力ｺﾝﾃﾞﾝｻを搭載しています。
The FPMR05SR7503*A is capable of stable
operation with no external capacitance on the output.
To minimize output ripple voltage, the use of very low
ESR ceramic capacitors is recommended. These
capacitors should be placed in close proximity to the
load to improve transient performance and to
decrease output voltage ripple.
FPMR05SR7503*Aは出力に外付けｺﾝﾃﾞﾝｻが無い状態でも安定して動
作します。出力ﾘｯﾌﾟﾙを最小にするため、極低ESRのｾﾗﾐｯｸｺﾝﾃﾞﾝｻの接
続を推奨します。過渡時の特性向上と出力ﾘｯﾌﾟﾙ低減のために負荷の
近傍に極低ESRｾﾗﾐｯｸｺﾝﾃﾞﾝｻを実装することをお勧めします。
Note that the converter does not have a SENSE pin
to counteract voltage drops between the output pins
and the load. The impedance of the line from the
converter output to the load should thus be kept as
low as possible to maintain good load regulation.
このｺﾝﾊﾞｰﾀは出力端子と負荷間の電圧ﾄﾞﾛｯﾌﾟを補正するｾﾝｽ端子を設
けていません。精度の高い負荷特性を保持するために、ｺﾝﾊﾞｰﾀの出力
から負荷までのﾗｲﾝｲﾝﾋﾟｰﾀﾞﾝｽは可能な限り低くしてください。
ON/OFF (Pin 5)
The ON/OFF pin (pin 5) can be used to turn the
converter on or off remotely using a signal that is
referenced to GND (pin 2), as shown in Fig. A.
Two remote control options are available,
corresponding to negative and positive logic. In the
negative logic option, to turn the converter on Pin 5
should be at logic low or left open, and to turn the
converter off Pin 5 should be at logic high or
connected to Vin. In the positive logic option, to turn
the converter on Pin 5 should be at logic high,
connected to Vin or left open, and to turn the
converter off Pin 5 should be at logic low.
ON/OFF端子(5番ﾋﾟﾝ)は図Aのように、ｸﾞﾗﾝﾄﾞ(2番ﾋﾟﾝ)を基準としたﾘﾓｰﾄ
信号によりｺﾝﾊﾞｰﾀをON/OFFするのに使われます。 ﾈｶﾞﾃｨﾌﾞとﾎﾟｼﾞﾃｨﾌﾞ
ﾛｼﾞｯｸに対応するため、2種類のﾘﾓｰﾄｺﾝﾄﾛｰﾙを選択可能です。
ﾈｶﾞﾃｨﾌﾞｵﾌﾟｼｮﾝの場合、ｺﾝﾊﾞｰﾀをONするには5番ﾋﾟﾝをLowﾚﾍﾞﾙ、又は
未接続とし、ｺﾝﾊﾞｰﾀをOFFするには5番ﾋﾟﾝをHighﾚﾍﾞﾙ、又はVinと接続
とします。ﾎﾟｼﾞﾃｨﾌﾞｵﾌﾟｼｮﾝの場合、ｺﾝﾊﾞｰﾀをONするには5番ﾋﾟﾝをHighﾚ
ﾍﾞﾙ、Vinに接続、又は未接続とし、ｺﾝﾊﾞｰﾀをOFFするには5番ﾋﾟﾝをLow
ﾚﾍﾞﾙにします。
For a positive logic option, the ON/OFF pin (pin5) is
internally pulled-up to Vin. An open collector (open
-drain) transistor can be used to drive Pin 5.
The device driving Pin 5 must be capable of:
(a) Sinking up to 0.4mA at low logic level
ﾎﾟｼﾞﾃｨﾌﾞｵﾌﾟｼｮﾝの場合、ON/OFFﾋﾟﾝはﾓｼﾞｭｰﾙ内部でVinにﾌﾟﾙｱｯﾌﾟさ
れています。ｵｰﾌﾟﾝｺﾚｸﾀ（ｵｰﾌﾟﾝﾄﾞﾚｲﾝ）のﾄﾗﾝｼﾞｽﾀがON/OFFﾋﾟﾝの操
作に使用可能です。
ON/OFFﾋﾟﾝを操作するﾃﾞﾊﾞｲｽには下記能力が必要です。
(a) Lowﾚﾍﾞﾙで0.4mA程度のｼﾝｸ能力
For a negative logic option, the ON/OFF pin (pin5) is
internally pulled-down.A TTL or CMOS logic gate,
open collector(open-drain) transistor can be used to
drive Pin 5. When using an open collector(open
-drain) transistor, a pull-up resistor, R*=5k, should
be connected to Vin (See Fig. A).
The device driving Pin 5 must be capable of:
(b) Sinking up to 1.2mA at low logic level (≦0.8V)
(c) Sourcing up to 0.25mA at high logic level (2.3-5V)
ﾈｶﾞﾃｨﾌﾞｵﾌﾟｼｮﾝの場合、ON/OFFﾋﾟﾝはﾓｼﾞｭｰﾙ内部でﾌﾟﾙﾀﾞｳﾝされてい
ます。TTL、 CMOSﾛｼﾞｯｸ、又はｵｰﾌﾟﾝｺﾚｸﾀのﾄﾗﾝｼﾞｽﾀもON/OFFﾋﾟﾝの
操作に使用可能です。ｵｰﾌﾟﾝｺﾚｸﾀのﾄﾗﾝｼﾞｽﾀを使用する時は5kΩのﾌﾟ
ﾙｱｯﾌﾟ抵抗をVinに接続してください。(図A参照)
ON/OFFﾋﾟﾝを操作するﾃﾞﾊﾞｲｽには下記能力が必要です。
(b) 0.8V以下のLowﾚﾍﾞﾙで1.2mAまでのｼﾝｸ能力
(c) 2.3V-5VのHighﾛｼﾞｯｸﾚﾍﾞﾙで0.25mAまでの供給能力
O
p
eration
Fi
g
. A: Circuit confi
g
uration for remote ON/OFF
R* is for negative logic option only
Rload
CONTROL
INPUT
GND TRIM
Vin Vout
R*
ON/OFF
Vin
Page 6 of 26
Delivering Next Generation Technology
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FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Output Voltage Programming (Pin 3)
The output voltage of the FPMR05SR7503*A
converter can be programmed from 0.7525V to 3.63V
by using an external resistor or a voltage source
FPMR05SR7503*Aの出力電圧は外部抵抗を接続するか、又は外部電
源を印加することで 0.7525V～3.63Vまで可変可能です。
External Resistor
An external trim resistor, RTRIM, should be connected
between TRIM (pin 3) and GND (pin 2); see Fig. B.
The value of RTRIM, in k, for a desired output
voltage, VO-REQ, in V, is given by:
外部抵抗 RTRIMはTRIM端子(3番ﾋﾟﾝ)とGND端子(2番ﾋﾟﾝ)の間に接続し
てください。図Bを参照。 RTRIM の定数、及び必要な出力電圧は次の式
により求めます。
Note that the tolerance of a trim resistor will affect the
tolerance of the output voltage. Standard 1% or 0.5%
resistors may suffice for most applications; however,
a tighter tolerance can be obtained by using two
resistors in series instead of one standard value
resistor.
Table 1 lists calculated values of RTRIM for common
output voltages. For each value of RTRIM, Table 1 also
shows the closest available standard resistor value.
RTRIM の公差は出力電圧の公差に影響します。ほとんどの使用状況に
おいては、標準的な1%又は0.5%品の抵抗で十分です。しかしながら、よ
り厳しい出力精度のためには、抵抗1本よりも2本を直列に使用します。
Table 1に一般的な出力電圧を設定する際の抵抗値を表示します。また
Table 1に標準的な抵抗を使用した場合の近似値も表示しています。
Table 1: Trim Resistor Value
VO-REG [V] RTRIM [k] The Closest
Standard Value [k]
0.7525 Open
1.0 80.02 80.6
1.2 41.97 42.2
1.5 23.08 23.2
1.8 15.00 15.0
2.0 11.78 11.8
2.5 6.95 6.98
3.3 3.16 3.16
3.63 2.21 2.21
External Voltage Source
To program the output voltage using an external
voltage source, a voltage, VCTRL, should be applied to
the TRIM pin. Use of a series resistor, REXT, between
the TRIM pin and the programming voltage source is
recommended to make trimming less sensitive.
外部電源を使って出力電圧を可変するには、TRIM端子にVCTRLの電圧
を印加します。電圧設定が敏感すぎるのを避けるため、TRIM端子と外
部電源間に抵抗を直列に接続することをお勧めします。
The voltage of the control voltage VCTRL, in V, for a
given value of REXT, in k, is given by:
VCTRL電圧は下記の式により算出が可能です。
Table 2 lists values of VCTRL for REXT=0 and
REXT=15k.
Table 2はREXT=0の時とREXT=15kの時のVCTRL電圧を表しています。
Table 2: Control Voltage [Vdc]
VO-REG [V] VCTRL (REXT=0) VCTRL (REXT=15k)
0.7525 0.700 0.700
1.0 0.658 0.535
1.2 0.624 0.401
1.5 0.573 0.201
1.8 0.522 0.000
2.0 0.488 -0.133
2.5 0.403 -0.468
3.3 0.268 -1.002
3.63 0.212 -1.223
Vin
On/off
GND
Vout
TRIM
Load
R
TRI
M
Vin
Fig. B: Configuration for programming output voltage
]k[ 5.11-
0.7525)-(V
21.07
R
REQ-O
TRIM Ω=
[V]
30.1
0.7525)-)(VR(5.11
-0.7V -REQOEXT
CTRL
+
=
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Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Protection Features
Input Under-Voltage Lockout
From a turned-on state, the converter will turn off
automatically when the input voltage drops below
typically 2.1V. It will then turn on automatically when
the input voltage reaches typically 2.2V.
動作している状態で入力電圧がTYPで2.1V未満になると、このｺﾝﾊﾞｰﾀ
は自動的に停止します。また、入力電圧がTYPで2.2V以上になると、こ
のｺﾝﾊﾞｰﾀは自動的に動作を開始します。
Output Over-Current Protection (OCP)
The converter is self-protected against over-current
and short circuit conditions. On the occurrence of an
over-current condition, the converter will enter a
pulse-by-pulse hiccup mode. On the removal of the
over-current or short circuit condition, Vout will return
to the original value (auto-reset).
このｺﾝﾊﾞｰﾀは過電流と短絡に対し自己保護します。過電流状態になる
と、このｺﾝﾊﾞｰﾀはﾊﾟﾙｽ-ﾊﾞｲ-ﾊﾟﾙｽ HICCUPﾓｰﾄﾞになり、過電流状態が
解除されるとVoutは通常の値に戻ります。(自動ﾘｾｯﾄ)
Over-Temperature Protection (OTP)
The converter is protected against over-temperature
conditions, using a built-in thermal protection feature
in the PWM controller IC. In case of overheating due
to abnormal operation conditions, the converter will
turn off automatically. It will turn back on
automatically once it has cooled down to a safe
temperature (auto-reset).
このｺﾝﾊﾞｰﾀはPWMｺﾝﾄﾛｰﾙICの持っている温度保護機能を使って加熱
状態から保護されています。異常な動作条件などにより加熱保護が動
作すると、ｺﾝﾊﾞｰﾀは自動的に停止します。安全な温度まで下がると、自
動的に再起動します。(自動ﾘｾｯﾄ)
Alternatively, Option additionally incorporates an
independent OTP function with higher precision than
that provided by the controller IC. In case of
overheating due to abnormal operation conditions,
the converter will turn off automatically. It will turn
back on automatically once it has cooled down to a
safe temperature (auto-reset).
他の方法として、ｵﾌﾟｼｮﾝでｺﾝﾄﾛｰﾙICよりも精度の高い独立したOTP機
能を付加することができます。異常な動作条件などにより加熱保護が
動作すると、ｺﾝﾊﾞｰﾀは自動的に停止します。安全な温度まで下がると、
自動的に再起動します。(自動ﾘｾｯﾄ)
Safety Requirements
The converter meets North American and
International safety regulatory requirements per
UL60950 and EN60950. The converter meets SELV
(safety extra-low voltage) requirements under
normal operating conditions in that the output
voltages are ELV (extra- low voltage) when all the
input voltages are ELV. Note that the converter is not
internally fused: to meet safety requirements, a fast
acting in-line fuse with a maximum rating of 5A must
be used in the positive input line.
このｺﾝﾊﾞｰﾀはUL60950とEN60950による北米、及び国際的な安全基準
を満たしています。このｺﾝﾊﾞｰﾀは通常の動作条件下においてSELVの
条件を満たしており、入力電圧がELVであれば出力電圧もELVとなりま
す。但し、このｺﾝﾊﾞｰﾀは内部にﾋｭｰｽﾞを持っていませんので、安全規格
に適合させるためには、入力ﾗｲﾝのﾌﾟﾗｽ側に即断型で最大定格5Aの
ﾋｭｰｽﾞを接続してください。
Characterization
Overview
The converter has been characterized for several
operational features, including thermal derating
(maximum available load current as a function of
ambient temperature and airflow), efficiency, power
dissipation, start-up and shutdown characteristics,
ripple and noise, and transient response to load
step-changes.
このｺﾝﾊﾞｰﾀは温度ﾃﾞｨﾚｰﾃｨﾝｸﾞ、効率、電力損失、ｽﾀｰﾄｱｯﾌﾟ時、及び
ｼｬｯﾄﾀﾞｳﾝ時の動作、ﾘｯﾌﾟﾙ･ﾉｲｽﾞ、動的負荷変動などを含む、さまざま
な動作状態で特徴付けられます。
Figures showing data plots and waveforms for
different output voltages are presented in the
following pages. The figures are numbered as
Fig.*V-#, where *V indicates the output voltage, and #
indicates a particular plot type for that voltage. For
example, Fig *V-2 is a plot of efficiency vs. load
current for any output voltage *V.
各出力電圧時のﾃﾞｰﾀ、及び波形の図は以後のﾍﾟｰｼﾞに掲載されていま
す。図はFig *V-#のように番号付けされており、*Vは出力電圧を表し、
#は特定のﾌﾟﾛｯﾄを表します。例えば Fig *V-2とあれば、*V出力での効
率特性を表します。
Test Conditions
To ensure measurement accuracy and
reproducibility, all thermal and efficiency data were
taken with the converter soldered to a standardized
thermal test board. The thermal test board was
mounted inside FDK’s custom wind tunnel to enable
precise control of ambient temperature and airflow
conditions.
測定精度、及び再現性を確実にするために、全ての温度、及び効率
ﾃﾞｰﾀは標準化された温度評価ﾎﾞｰﾄﾞにｺﾝﾊﾞｰﾀを半田付けして取得して
います。温度評価ﾎﾞｰﾄﾞをFDK特性の風洞実験設備内に設置すること
で、環境温度、及び風量を精密に管理しています。
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The thermal test board comprised a four layer printed
circuit board (PCB) with a total thickness of 0.060”.
Copper metallization on the two outer layers was
limited to pads and traces needed for soldering the
converter and peripheral components to the board.
The two inner layers comprised power and ground
planes of 2 oz. copper. This thermal test board, with
the paucity of copper on the outer surfaces, limits
heat transfer from the converter to the PCB, thereby
providing a worst-case but consistent set of
conditions for thermal measurements.
温度評価ﾎﾞｰﾄﾞは厚さ0.060”(1.6mm)厚の4層PCBで作成しています。表
面2層の銅箔はｺﾝﾊﾞｰﾀを実装するためのﾊﾟｯﾄﾞと周辺部品へのﾊﾟﾀｰﾝの
みに限定しています。内側2層は70μmの銅箔で電力、及びｸﾞﾗﾝﾄﾞﾗｲﾝ
を形成しています。このように表層の銅箔を限りなく少なくした温度評価
ﾎﾞｰﾄﾞは、ｺﾝﾊﾞｰﾀからPCBへの熱の逃げを制限し、ﾜｰｽﾄｹｰｽでありな
がら矛盾の無い温度評価条件を実現しています。
FDK’s custom wind tunnel was used to provide
precise horizontal laminar airflow in the range of 50
LFM to 600LFM, at ambient temperatures between
30°C and 85°C. Infrared (IR) thermography and
thermocouples were used for temperature
measurements. (See Fig. C & Fig. D)
FDK特製の風洞実験装置は水平方向の層流を50LFM(自然対流と同
等、NC)から600LFMまで精密に制御でき、環境温度は30℃から85℃を
制御できます。温度測定には赤外線(IR)ｻｰﾓｸﾞﾗﾌｨと熱電対を使用して
います。(図C及び図E参照)
It is advisable to check the converter temperature in
the actual application, particularly if the application
calls for loads close to the maximums specified by
the derating curves. IR thermography or
thermocouples may be used for this purpose. In the
latter case, AWG#40 gauge thermocouples are
recommended to minimize interference and
measurement error. An optimum location for
placement of a thermocouple is indicated in Fig. E.
ｺﾝﾊﾞｰﾀの温度を実際の使用環境で測定することをお勧めします。特に
実使用上の負荷が温度ﾃﾞｨﾚｰﾃｨﾝｸﾞの最大値に近い場合は測定が必
要です。温度測定には赤外線ｻｰﾓｸﾞﾗﾌｨ、又は熱電対をお使いいただ
けます。熱電対を使用する場合、風の妨げになることを防ぐためと、測
定誤差を少なくするため、AWG40の熱電対を推奨します。熱電対での
測定に最適な箇所は図Eに示します。
Thermal Derating
Figs *V-1 show the maximum available load current
vs. ambient temperature and airflow rates. Ambient
temperature was varied between 30°C and 85°C,
with airflow rates from NC(50LFM) to 400LFM
(0.25m/s to 2.0m/s). The converter was mounted
horizontally, and the airflow was parallel to the long
axis of the converter, going from pin 1 to pin 5.
図 *V-1はある環境温度と風量の条件下における最大出力電流を表し
ます。環境温度は風量NC(50LFM)～400LFMの条件で30℃～85℃の間
を変動させています。ｺﾝﾊﾞｰﾀは水平に設置し、風向きはｺﾝﾊﾞｰﾀの長手
方向に平行で1番ﾋﾟﾝから5番ﾋﾟﾝに向けて吹いています。
The maximum available load current, for any given
set of conditions, is defined as the lower of:
(i) The output current at which the temperature of any
component reaches 120°C, or
(ii) The current rating of the converter (3A)
A maximum component temperature of 120°C should
not be exceeded in order to operate within the
derating curves. Thus, the temperature at the
thermocouple location shown in Fig. E should not
exceed 120°C in normal operation.
各々の測定条件で最大出力電流の値は下記のとおり定義します。
(i) いずれかの部品の温度が120℃に到達した時点の出力電流値又は
(ii) ｺﾝﾊﾞｰﾀの公称定格電流 (3A)
温度ﾃﾞｨﾚｰﾃｨﾝｸﾞの範囲内で動作させるために、部品温度は120℃を超
えないようにご注意ください。従って、通常動作時に図Eに示す位置の
熱電対の温度が120℃を超えないようにしてください。
Note that continuous operation beyond the derated
current as specified by the derating curves may lead
to degradation in performance and reliability of the
converter and may result in permanent damage.
出力電流ﾃﾞｨﾚｰﾃｨﾝｸﾞｶｰﾌﾞで指定された定格電流を超えた連続した操
作は、性能の低下、信頼性の低下、及びﾓｼﾞｭｰﾙの破損を引き起こすこ
とがあります。
Fi
g
. D: Test Chambe
r
Fig. C: FDK Original Wind Tunnel
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Ripple and Noise
The test circuit setup shown in Fig. F was used to
obtain the output voltage ripple. And Fig. G was used
to obtain the input reflected ripple current waveforms.
The output voltage ripple waveform was measured
across a 1µF ceramic capacitor at full load current.
図Fに示す試験回路は出力ﾘｯﾌﾟﾙの測定に使用しており、入力ﾘｯﾌﾟﾙの
測定には図Gの試験回路を使用しています。全ての出力ﾘｯﾌﾟﾙ波形は1
μFのｾﾗﾐｯｸｺﾝﾃﾞﾝｻを付けて測定しています。
Thermocouple
Fig. E: Location of the thermocouple for thermal testing
Fig. F: Test setup for measuring output voltage ripple
Is
1µH
Input Inductor Vout
+
Cin Co
2x47µF 1µF 2x47µF
Ceramic Ceramic Ceramic
Vin source Capacitor Capacitor Capacitor
Vin
GND
Vout
GND
DC/DC
Converter
DC
Fig. G: Test setup for measuring input
reflected ripple current
Is
1µH
Input Inductor Vout
+
Cin Co
2x47µF 1µF 2x47µF
Ceramic Ceramic Ceramic
Vin source Capacitor Capacitor Capacitor
Vin
GND
Vout
GND
DC/DC
Converter
DC
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0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-3.3V-1: Available load current vs. ambient
temperature and airflow rates for Vout=3.3V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-3.3V-2: Efficiency vs. load current and input
voltage for Vout=3.3V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-3.3V-3: Power dissipation vs. load current and
input voltage for Vout=3.3V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Load Current [A]
Efficiency [%]
4.5Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
4.5Vin
5Vin
5.5Vin
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Fig-3.3V-4: Turn-on transient for Vout=3.3V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-3.3V-5: Output voltage ripple (20mV/div.) for
Vout=3.3V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-3.3V-6: Output voltage response for Vout=3.3V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-3.3V-7: Output voltage response for Vout=3.3V
to negative load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
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0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-2.5V-1: Available load current vs. ambient
temperature and airflow rates for Vout=2.5V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-2.5V-2: Efficiency vs. load current and input
voltage for Vout=2.5V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-2.5V-3: Power dissipation vs. load current and
input voltage for Vout=2.5V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
3.3Vin
5Vin
5.5Vin
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Fig-2.5V-4: Turn-on transient for Vout=2.5V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-2.5V-5: Output voltage ripple (20mV/div.) for
Vout=2.5V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-2.5V-6: Output voltage response for Vout=2.5V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-2.5V-7: Output voltage response for Vout=2.5V
to positive load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
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0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-2.0V-1: Available load current vs. ambient
temperature and airflow rates for Vout=2.0V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-2.0V-2: Efficiency vs. load current and input
voltage for Vout=2.0V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-2.0V-3: Power dissipation vs. load current and
input voltage for Vout=2.0V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
3.3Vin
5Vin
5.5Vin
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Fig-2.0V-4: Turn-on transient for Vout=2.0V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-2.0V-5: Output voltage ripple (20mV/div.) for
Vout=2.0V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-2.0V-6: Output voltage response for Vout=2.0V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-2.0V-7: Output voltage response for Vout=2.0V
to positive load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
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0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-1.8V-1: Available load current vs. ambient
temperature and airflow rates for Vout=1.8V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-1.8V-2: Efficiency vs. load current and input
voltage for Vout=1.8V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-1.8V-3: Power dissipation vs. load current and
input voltage for Vout=1.8V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
2.4Vin
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
2.4Vin
3.3Vin
5Vin
5.5Vin
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Fig-1.8V-4: Turn-on transient for Vout=1.8V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-1.8V-5: Output voltage ripple (20mV/div.) for
Vout=1.8V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-1.8V-6: Output voltage response for Vout=1.8V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-1.8V-7: Output voltage response for Vout=1.8V
to positive load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
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0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-1.5V-1: Available load current vs. ambient
temperature and airflow rates for Vout=1.5V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-1.5V-2: Efficiency vs. load current and input
voltage for Vout=1.5V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-1.5V-3: Power dissipation vs. load current and
input voltage for Vout=1.5V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
2.4Vin
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
2.4Vin
3.3Vin
5Vin
5.5Vin
Page 19 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Fig-1.5V-4: Turn-on transient for Vout=1.5V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-1.5V-5: Output voltage ripple (20mV/div.) for
Vout=1.5V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-1.5V-6: Output voltage response for Vout=1.5V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-1.5V-7: Output voltage response for Vout=1.5V
to positive load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Page 20 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-1.2V-1: Available load current vs. ambient
temperature and airflow rates for Vout=1.2V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-1.2V-2: Efficiency vs. load current and input
voltage for Vout=1.2V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-1.2V-3: Power dissipation vs. load current and
input voltage for Vout=1.2V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
2.4Vin
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
2.4Vin
3.3Vin
5Vin
5.5Vin
Page 21 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Fig-1.2V-4: Turn-on transient for Vout=1.2V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-1.2V-5: Output voltage ripple (20mV/div.) for
Vout=1.2V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-1.2V-6: Output voltage response for Vout=1.2V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-1.2V-7: Output voltage response for Vout=1.2V
to positive load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Page 22 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-1.0V-1: Available load current vs. ambient
temperature and airflow rates for Vout=1.0V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-1.0V-2: Efficiency vs. load current and input
voltage for Vout=1.0V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-1.0V-3: Power dissipation vs. load current and
input voltage for Vout=1.0V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
2.4Vin
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
2.4Vin
3.3Vin
5Vin
5.5Vin
Page 23 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Fig-1.0V-4: Turn-on transient for Vout=1.0V with
application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-1.0V-5: Output voltage ripple (20mV/div.) for
Vout=1.0V at full rated load current into a resistive
load with external capacitance 47µFx2 ceramic +
1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-1.0V-6: Output voltage response for Vout=1.0V
to positive load current step-change from 1.5A to
3A with slew rate of 5A/µs at Vin=5.0V. Co=47µFx2
ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-1.0V-7: Output voltage response for Vout=1.0V
to positive load current step-change from 3A to
1.5A with slew rate of -5A/µs at Vin=5.0V.
Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Page 24 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
0.0
1.0
2.0
3.0
4.0
30 40 50 60 70 80
Ambient Temp [DegC]
Output Current [A]
400LFM
200LFM
NC(50)
Fig-0.7525V-1: Available load current vs. ambient
temperature and airflow rates for Vout=0.7525V with
Vin=5.0V. Maximum component temperature≦120°C
Fig-0.7525V-2: Efficiency vs. load current and input
voltage for Vout=0.7525V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
Fig-0.7525V-3: Power dissipation vs. load current
and input voltage for Vout=0.7525V.
Airflow rate=200 LFM (1.0m/s) and Ta=25°C.
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Efficiency [%]
2.4Vin
3.3Vin
5Vin
5.5Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Power Dissipation [W]
2.4Vin
3.3Vin
5Vin
5.5Vin
Page 25 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Fig-0.7525V-4: Turn-on transient for Vout=0.7525V
with application of Vin at full rated load current
(resistive) and 47µFx2 external capacitance at
Vin=5.0V.
Top trace: Vin (5V/div.)
Bottom trace: output voltage (1V/div.)
Time scale: 2ms/div.
Fig-0.7525V-5: Output voltage ripple (20mV/div.)
for Vout=0.7525V at full rated load current into a
resistive load with external capacitance 47µFx2
ceramic + 1µF ceramic at Vin=5.0V.
Time scale: 2µs/div
Fig-0.7525V-6: Output voltage response for
Vout=0.7525V to positive load current step-change
from 1.5A to 3A with slew rate of 5A/µs at
Vin=5.0V. Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Fig-0.7525V-7: Output voltage response for
Vout=0.7525V to positive load current step-change
from 3A to 1.5A with slew rate of -5A/µs at
Vin=5.0V. Co=47µFx2 ceramic.
Top trace: output voltage (100mV/div.)
Bottom trace: load current (1A/div.)
Time scale: 10µs/div.
Page 26 of 26
Delivering Next Generation Technology
Series
FPMR05SR7503*A
2.4-5.5Vdc Input, 3A, 0.7525-3.63Vdc Output
http://www.fdk.com Ver 2.3 Nov. 05, 2007
Mechanical Drawing
Part Numbering Scheme
Product
Series Shape Regulation Input
Voltage
Mounting
Scheme
Output
Voltage
Rated
Current
ON/OFF
Logic
Pin
Shape
FP M R 05 S R75 03 * A
Series
Name Middle R:
Regulated Typ=5V Surface
Mount
0.75V
(Programmable:
See page 6)
3A N: Negative
P: Positive STD
Cautions
NUCLEAR AND MEDICAL APPLICATIONS: FDK Corporation products are not authorized for use as critical
components in life support systems, equipment used in hazardous environments, or nuclear control systems
without the written consent of FDK Corporation.
SPECIFICATION CHANGES AND REVISIONS: Specifications are version-controlled, but are subject to
change without notice.
Pin Connections
Pin # Function
1 Vin
2 GND
3 TRIM
4 Vout
5 ON/OFF
Notes
- All dimensions are in millimeters (inches)
- Unless otherwise specified, tolerances are +/- 0.25mm
- Connector material: Copper
- Connector finish: Gold over Nickel
- Converter weight: 0.078oz (2.2g) typical
- Converter height: 6.0mm Max
- Recommended surface-mount pads: 2.1 x 2.6mm
