iv e
T e n ta t
High Efficiency DC/DC Converter
40Watt TSI 40 Series
TSI 40 Series are ultra small size, light, and large capacity non-isolated type step-down DC-DC converters, which have
ultra high efficiency (93~95%) by using the latest synchronous rectification circuit technology. They can supply 40W
output power without an additional heat sink.
Input: +5V to +12V
+12V
Input :
Output: +3.3V, 12A (+1.0V~+3.3V)
Output: +5.0V, 8A (+5.0V~+6.0V)
Features
- Thin, Ultra Small Size
- ON/OFF Control
- Output Voltage +1.0~+3.3V/ +5V~+6V
- Remote Sensing
- Output Current 0~12A/ 0~8A
- Over-Current Protection
- Ultra High Efficiency 93%~95%
- Input/Output Non-Isolated Type
- Wide Operating Temp. Range -10°C~+70°C
- Adjustable Output
- MTBF 900,000Hrs, All products received aging
- Wide Input Voltage Range
- No Heat Sink required
- High Reliability , Long Life, High Performance
Models
Standard Input
Input Voltage
Standard Output
Adjustable
Output
Non-Load
Ripple &
Voltage
Range
Voltage
Output Range
Current
Current
Noise
Efficiency
Vdc
Vdc~Vdc
Vdc
Vdc~Vdc
A
mA(typ)
mVpp(typ)
(typ)
TSI 40-1210
5/12
+4.5 ~ 13.6
+3.3
+1.0 ~ 3.3
12 max.(*1)
90
40
93
TSI 40-1211
12
+8.0 ~ 13.6 (*2)
+5.0
+5.0 ~ 6.0
8 max. (*1)
60
60
95
(*1) Input Voltage will become max output by air cooling method (natural or compulsory air cooling). Please refer to thermal derating graph.
(*2) When the voltage between the converter's output pin is 5.3V or below, operating is capable from input +7V. But only at
input between +7~+8V, max output current at 7A.
Specification
Standard Output
When it is open between 11pin 12pin, output voltage will be set at +3.3V or +5V.
(The accuracy of output V setting is ±4% max.)
Adjustable Output V Range
Output Voltage is adjustable according to the range above.
Line Reg.
Load Reg.
8mVtyp. (For 0~100% of Load Reg., at Rating Input
Temp. Reg.
Ripple & Noise
Refer Table 1 (Rating Input, Rating output, Room Temp.) Measurements Frequency Band Width 20MHz)
Efficiency
93%~95% (Rating Input/ Output, Room Temp., Refer Table 1
Over-Current Protection
Operates at 105% or more Rating Load Current, auto recovery type. Avoid lomg time of short-circuit condition.
Over-Voltage Protection
None
Standby Current
TSI 40-1210
3mAmax. (Vin=5.5V), 6mAmax.(Vin=13.6V)
TSI 40-1211
100 µAmax.
Remote ON/OFF
Between 1pin(ON/OFF) 2pin(S.GND [Open: Output ON, Short: Output OFF (Refer to application)]
Remote Sensing
TSI 40-1210
The voltage between the converter's output pin voltage between 7-8pin] and sensing voltage
difference [voltage between 6-9pin] is 10% of sensing voltage (0.1V~0.3V) or below. (*1)
TSI 40-1211
The voltage between the converter's output pin voltage between 7-8pin] and sensing voltage
MTBF
900,000Hr min. (EIAJ RCR-9102)
Switching Frequency
220KHz typ. (TSI 040-1210), 270KHz typ. (TSI 40-1211)
Operating Temp. Range
Storage Temp. Range
Storage Temp. -20°C~+85°C
Humidity Range
95%R.Hmax.
Cooling Condition
Output current will change by the input voltage. Refer to the thermal derating graph.
Vibrations
5~10Hz Every amplitude 10mm (3directions, each for 1hour), 10~55Hz acceleration 2G (3directions, each for 1hour
Shock
Acceleration 20G 3directions, 3times each ,
Weight
14g typ.
External dimensions
W=24.9 L=50.0 H=10.0 typ (mm) (For detail dimensions refer the outline.)
(*1) When input is +5.5V or below and voltage between output pin is 3.40V~3.63V, mass output current will be 11A.
(*2) When the voltage between converter's output pin is 5.3V or more, max output current will be 7A.
The above specification will be provided at rating value, when there is no specified condition described.
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en
T
Te
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ve
a ttiiv
tta
Model TSI 40-1210
Outline
C /L
0.8
5
5.54
2.0
5.08
12 .7
5.08 7.62
7.62
1.0 dia.
0.8
4
3.0
3
3.0
6
5.54
7
2 0 .3 2
8
(Stand off )
2
9
3.0
Lo t.No .
1
10
3 .3S 12F
11
t1 .0
25.9 m ax
C /L
12
p in
1
2
3
4
5
6
7
8
9
10
11
12
1 0 .7 m a x
5 1 .0 m a x
F un ctio n
O N /O FF
S .G N D
+V in
-V in
NC
-V s
-V o u t
+V o u t
+V s
NC
V .A D J 1
V .A D J 2
2.0
Dimensions: mm
1.0 d ia .
Dimension difference with
nothing specified ±0.5
5.08
1.27
Weight: 14g typ
Block Diagram
9 +Vs
+Vin
FET1
3
+Vout
8
+
+
C o n tro l
C1
Load
C2 C3
FET2
-Vin
4
7
V.ADJ 2
2
ON/OFF
1
SW1
ON = Open
OFF = Short
(0 to 0.5V )
12
V.ADJ 1
11
6
-Vout
-Vs
V.ADJ
Open = 3.3V
Thermal Derating
Natural
N a tura l aconvection
ir c oo ling
Forced
air air
cooling
(1.5m/s)
Co m pu lsory
co olin g
(1.5m /s)
Vo ut = 3 .3 V
12
11
O u tp u t C u rre n t [A ]
O utpu t C u rre［
n tA］
］
11
10
9
8
7
V in = 13.6V
6
5
4
V in = 4.5V ~5.5V
3
10
9
8
7
V in = 1 3 .6 V
6
V in = 4 .5 V ~ 5 .5 V
5
4
3
2
2
1
0
-1 0
V ou t = 3.3 V
12
1
20
30
40
50
A m bie n t T em p . [ C ]
60
70
0
-1 0
20
30
40
50
60
70
Am bien t T em p .[ C]
Vout: Voltage between output pin （voltage between 7-8pin）
Note: Please refer to the above thermal derating graph when designing, and contact us if there are any questions.
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Model TSI 40-1210
Standard Connection Circuit Diagram
Additional Capacitor
- C1 selection
3
+Vs
+ V in
+
+Vout
P o in t A
9
8
-
BTSI
S I-3 .3
S 12R 0F
40-1210
C1
C2
4
-V in
-V o u t
O N /O F F
1
S .G N D
2
V .A D J V .A D J
2
1
12
11
SW 1
O pen = O n
S h o rt = O ff
-V s
7
Load
6
P o in t B
ＶＲ１
R e s is ta n c e fo r a d ju s ta b le o u tp u t
(O p e n w h e n ３.３Ｖ o u t p u t)
Add 2 or more C1=68 µF or more, ESR=34 mOhm or below in parallel.
Recommended Capacitor: 20SP68M (Sanyo)×2pcs,
or 20SH100M (Sanyo)×2pcs
C2 selection
{When Output Voltage is 1.7V or more}
Add 2 or more C2=220 µF or more, ESR=28 mOhm or below in parallel.
Recommended Capacitor: 6SP220M (Sanyo)×2pcs,
or 10SH220M (Sanyo)×2pcs
{When Output Voltage is below 1.7V}
Add 3 or more C2=330 µFor more, ESR=25 mOhm or below in parallel.
Recommended Capacitor: 4SP330M (Sanyo)×3pcs,
or 6SH330M (Sanyo)×3pcs
ESR Frequency of the above additional capacitor: 100KHz~300KHz
Note 1. This product can be effected by contacting resistor, so do not use a connector, and solder directly to the print board.
Note 2. For C1, C2 approximate the converter's pin as much as possible, and wire with a bold pattern.
Approximate (+) and (-) to make the loop not big.
Note 3. Connect +Vs pin and -Vs pin to the capacitor closer to the load side.
This pin is a remote sensing pin so do not keep it open.
Remote Sensing
+Vs pin and -Vs pin are remote sensing pins.
The connecting point of sensing line and output line will be the output setting voltage. (Between A-B of above figure)
By this function, the voltage drop at the output line can be corrected.
As much as A point and B point gets closer to the load side, Vout (voltage between 7-8pin) will become higher than the output setting voltage.
Adjusting Output Voltage
Output voltage is adjustable in the range of 1.0~3.3V by connecting a resistor between V.ADJ1pin (11Pin) and V.ADJ2 pin (12Pin).
Resistance value is as the figure mentioned.
Resistance values when adjusting
output voltage (Equation 1)
9 +V s
B SI-3 .3S 1 2 R 0 F
8 +V out
R x×R y
V R 1=
Rx
Vs
Lo ad
Ry
11
V .A D J 1
12
V .A D J 2
7
-V o u t
6
-V s
VR1
Vo
1 .1
Vo
R x× V s - R y
1 .1
- 0 .8
- 0 .8
Vo= Requested output V
Rx=22.56k ohm
Ry=8.2k ohm
Vs=0.8V
Note 1. When adjusting output voltage
Start initial energizing after checking that the adjustable resistor's lug is in the direction of low voltage.
Note 2. Recommend fixed resistor when mass production.
Note 3. Wire between V.ADJ1-V.ADJ2 pin short as much as possible.
Note 4. Without a resistor between V.ADJ1-V.ADJ2 pin, rating output voltage will be +3.3V.
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Model TSI 40-1210
Remote ON/OFF Control
- ON/OFF Function
By using this ON/OFF control function, the output can be ON/OFF controlled without intermitting input.
This is an effective function when composing a power supply system sequence. And this can also be used as a power standby function for
saving power control.
- Not using ON/OFF Function
To not use the ON/OFF function, keep ON/OFF pin open.
+ V in
3
O N /O F F
1
- Method of ON/OFF Control
Between ON/OFF pin (1Pin ) and S.GND (2Pin )
Open (Max. 6V) will be generated Output=ON
Short (0~0.5V 500µA max.)
Output=OFF
B S I- 3 .3 S 1 2 R 0 F
5V
470
ohm
C on tr ol
C i rcui t
or
S .G N D
2
0 .1 µ F
-V in
4
Max. Rating Voltage of ON/OFF pin (1Pin ): -0.3V~+6V
Reverse Input Voltage Protection
FU S E
+V in
3
V in
D1
C1
-V in
O N /O FF
S .G N D
9
8
+V s
C2
BTSI
S I- 3 .40-1210
33 S 12R 0F
4
1
2
+V o ut
This product is a non-isolated type DC-DC converter.
If you connect the input voltage reversed by mistake,
it will be damaged.
If there is a possibility of reverse connection, please
add a protection as the left figure.
The left figure is an example using huse and diode.
L oad
-V o ut
7
6
-V s
11
12
V .A D J 1
V .A D J 2
Over-Voltage Protection
TSI-40 series does not have a built-in over-voltage protection.
If the switching element in this converter is damaged in short mode
input voltage +Vin will be output as is.
However, to prepare for damage at over-voltage mode, we recommend to
add a circuit to intercept the supplying power circuit.
FU S E
+V out
+Vs
BTSI
SI 40W
40
S eries
-V s
-V o u t
+ V in
SCR
+ V in
C1
Note:
-V in
When it is damaged at over-voltage mode, ON/OFF control does
not operate.
C2
O ve rV o ltag e
d e te ctio n
c ir cu it
Load
V .A D J 1
V .A D J 2
Soldering Conditions
Solder under the following conditions.
1. With soldering iron
2. With soldering dip
340°C~360°C
240°C~260°C
within 5sec.
within 10sec.
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Model TSI 40-1211
Outline
6
3
3.0
C /L
5
4
25 .9 m ax
7
2 0 .32
8
0 .8
2
9
3 .0
Lot.No.
1
10
5.0S8F
11
t1 .0
5.54
C /L
12
p in
1
2
3
4
5
6
7
8
9
10
11
12
1 0 .7 m a x
5 1 .0 m a x
5 .0 8
1 2 .7
5 .0 8 7 .6 2
7 .6 2
0.8
3 .0
5 .5 4
2 .0
(Stand off )
ƒ³ 1.0
F u n c tio n
O N /O F F
S .G N D
+ V in
-V in
NC
-V s
-V o u t
+Vout
+Vs
NC
V .A D J 1
V .A D J 2
2.0
Dimensions: mm
1 .0 d ia .
Pin type
5 .0 8
Dimension difference with
nothing specified ±0.5
1 .2 7
Weight: 14g typ
Block Diagram
9 +Vs
+Vin
FET1
3
+Vout
8
+
+
Control
C1
Load
C2 C3
FET2
-Vin
4
7
V.ADJ 2
2
ON/OFF
1
SW1
ON = Open
OFF = Short
(0 to 0.5V)
12
V.ADJ 1
11
6
-Vout
-Vs
V.ADJ
Open = 5.0V
Thermal Derating
V ou t = 5 .0V ~ 5 .3 V
Vout = 5 .3 V ~ 6.1 V
8
Output C urrent [A]
O utput C urrent [A ]
8
7
6
5
Na tural a ir
c ooling
4
Com p u ls ory
a ir co o ling
(1.5m /s )
3
7
6
5
Natura l air
cooling
4
Com pulsory
air cooling
(1 .5m /s)
3
2
2
1
1
0
-10
20
30
40
50
60
A m b ie n t T em p [°C ]
70
0
-10
20
30
40
50
60
70
Am bie nt T em p . [°C ]
Vout: Voltage between output pin （voltage between 7-8pin）
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Model TSI 40-1211
Standard Connection Circuit Diagram
Additional Capacitor
3
+ Vs
+ V in
+
+ Vout
P o in t A
9
8
B
S I-540-1211
.0 S 8 R 0 F
TSI
C1
C2
4
-V in
-V o u t
O N/OF F
1
S .GN D
V .AD
J 2
12
2
V .AD
J 1
11
SW 1
O pen = O n
S h o rt = O ff
-V s
7
6
Add 1 or more C1=68 µFor more, ESR=34 mOhm or below.
Recommended Capacitor: 20SP68M (Sanyo)×1pcs,
or 20SH100M (Sanyo)×1pcs
Lo ad
P o in t B
VR1
R e si sta n c e fo r a d ju sta b l e o u tp u t
（O p e n w h e n 5 .0 V o u tp u t）
Add 1 or more C2=150 µF or more, ESR=30 mOhm or below.
Recommended Capacitor: 10SP180M (Sanyo)×1pcs,
or 10SH220M (Sanyo)×1pcs
ESR Frequency of theadditional capacitor: 100KHz~300KHz
Note 1. This product can be effected by contacting resistor, so do not use a connector, and solder directly to the print board.
Note 2. For C1, C2 approximate the converter's pin as much as possible, and wire with a bold pattern.
Approximate (+) and (-) to make the loop not big.
Note 3. Connect +Vs pin and -Vs pin to the capacitor closer to the load side.
This pin is a remote sensing pin so do not keep it open.
Remote Sensing
+Vs pin and -Vs pin are remote sensing pins.
The connecting point of sensing line and output line will be the output setting voltage. (Between A-B of above figure)
By this function, the voltage drop at the output line can be corrected.
As much as A point and B point gets closer to the load side, Vout (voltage between 7-8pin) will become higher than the output setting voltage.
Output Voltage Adjustment
Output voltage is adjustable in the range of 5.0~6.0V by connecting a resistor between V.ADJ1pin (11Pin) and V.ADJ2 pin (12Pin).
Resistance value is as the figure mentioned.
Resistance figures when adjusting
output voltage (Equation 2)
9 +Vs
B SI-5 .0S 8 R 0 F
8 +V o ut
Load
Rx
Vs
Ry
11
V .A D J 1
12
V .A D J 2
7
-V o u t
6
-V s
VR1
VR1=
0 .8 × R x × R y
1 3 × V o × R y ｰ0 .8 ( R x + R y )
22
Vo=Requested output Voltage
Rx=22.1k ohm
Ry=8.2kohm
Vs=0.8V
Note 1. Be sure not to make the Vout（voltage between 7-8pin） over 6.1V.
Note 2. When adjusting output voltage
Start initial energizing after checking that the adjustable resistor's lug is in the direction of low voltage.
Note 3. Recommend fixed resistor when mass production.
Note 4. Wire between V.ADJ1-V.ADJ2 pin short as much as possible.
Note 5. Without a resistor between V.ADJ1-V.ADJ2 pin, rating output voltage will be +5.0V.
Jenatschstrasse 1 • CH-8002 Zurich • Switzerland
Tel. +41-1284 2911 • Fax +41-1201 1168 • e-mail: sales @ traco.ch • internet: http://www.tracopower.com
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