IA
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Features
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Industry standard surface mount device
Output voltage programmable from
0.75 V to 5.5 V via external resistor
Up to 10 A output current
Up to 95 % efficiency
Small size, low profile, cost-efficient open
frame design
Low output ripple and noise
High reliability
Remote on/off
Remote sense
Output overcurrent protection
(non-latching)
Overtemperature protection
Constant switching frequency (300 kHz)
Wide operating temperature range
Optional sequencing function
*R
oH
S
CO
M
PL
MX(T)10A-12SA SMT Non-Isolated Power Module
Description
Bourns
®
MX(T)10A-12SA is a non-isolated DC-DC converter
offering designers a cost and space-efficient solution with
standard features such as remote on/off, remote sense, precisely
regulated programmable output voltage, overcurrent and over-
temperature protection, and optional output voltage sequencing.
These modules deliver up to 10 A of output current with full load
efficiency of 95 % at 5 V output.
How to Order
M X (T) 10A - 12 S A (-P)
Configuration
M = Surface Mount Device
Internal Identifier
Identifies Sequencing Pin Function (optional)
Output Current (Amps)
Input Voltage (V)
Outputs
S = Single
Output Voltage (V)*
A = Adjustable
Optional Positive On/Off Logic
*Fixed output voltage parts and optional features available; contact factory.
Absolute Maximum Ratings
Stress in excess of absolute maximum ratings may cause permanent damage to the device. Device reliability may be affected if
exposed to absolute maximum ratings for extended time periods.
Characteristic
Continuous Input Voltage
Operating Temperature Range
Storage Temperature
Sequencing Function
Electrical Specifications
Min.
-0.3
-40
-55
-0.3
Max.
15
+85
+125
Vin, max.
Units
Vdc
°C
°C
Vdc
Notes & Conditions
See Thermal Considerations section
Unless otherwise specified, specifications apply over all input voltage, resistive load and temperature conditions.
Characteristic
Operating Input Voltage
Maximum Input Current
Input No Load Current
30
70
Input Stand-by Current
Inrush Transient
Input Reflected Ripple Current
Input Ripple Rejection
20
30
2
0.4
mA
mA
mA
A2s
mAp-p
dB
120 Hz
Min.
8.3
-
Nom.
Max.
14.0
7.0
Units
Vdc
Adc
Notes & Conditions
Vout
≤
Vin - 0.5 V
Over Vin range, Io max, Vout = 3.3 Vdc
Vin = 5.0 Vdc, Io = 0 A, mod. enabled,
-Vout = 0.75 Vdc
-Vout = 3.3 Vdc
Vin = 5.0 Vdc, module disabled
Caution: The power modules are not internally fused. An external input line fast blow fuse with a maximum rating of 15 A is required.
See the Safety Considerations section of this data sheet.
Applications
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Intermediate Bus architecture
Distributed power applications
Workstations and servers
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Telecom equipment
Enterprise networks including LANs/WANs
Latest generation ICs (DSP, FPGA, ASIC) and microprocessor powered applications
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
1
MX(T)10A-12SA SMT Non-Isolated Power Module
Electrical Specifications (Continued)
Characteristic
Output Voltage Setpoint Accuracy
Output Voltage Tolerance
Voltage Adjustment Range
Line Regulation
Load Regulation
Temperature Regulation
Output Current
Output Current Limit Inception (Hiccup Mode)
Output Short Circuit Current
Output Ripple and Noise Voltage
RMS
Peak-to-Peak
External Capacitance
- ESR
≥
1 mΩ
- ESR
≥
10 mΩ
Efficiency
(Vin = 5 Vdc, TA= 25 °C, Full Load)
87.5
89.0
90.0
92.0
93.0
95.0
300
200
25
3
12
30
30
75
1000
3000
0.0
Min.
-2.0
-3.0
0.7525
0.3
0.4
0.4
10.0
200
Nom.
Max.
2.0
3.0
5.5
Units
% Vo,set
% Vo,set
Vdc
% Vo,set
% Vo,set
% Vo,set
Adc
% Io max
Adc
mVrms
mVpk-pk
µF
µF
%
%
%
%
%
%
kHz
mV
µs
1
µF
ceramic/10
µF
tantalum capacitor
Peak Deviation
Settling Time (Vo<10 % peak deviation)
2 x 150
µF
polymer capacitors
Peak Deviation
Settling Time (Vo<10 % peak deviation)
Vo,set = 1.2 Vdc
Vo,set = 1.5 Vdc
Vo,set = 1.8 Vdc
Vo,set = 2.5 Vdc
Vo,set = 3.3 Vdc
Vo,set = 5.0 Vdc
Vo
≤
250 mV – Hiccup Mode
1
µF
ceramic/10
µF
tantalum capacitors
5 Hz to 20 MHz bandwidth
0 °C to +85 °C
Notes & Conditions
Vin min, Io max, TA = 25
°C
Over all rated in out voltage, load and
temperature conditions
Switching Frequency
Dynamic Load Response
2.5 A to 5 A; 5 A to 2.5 A;
(∆i/∆t = 2.5 A/µs; 25 °C)
2.5 A to 5 A; 5 A to 2.5 A;
(∆i/∆t = 2.5 A/µs; 25 °C)
100
25
mV
µs
General Specifications
Characteristic
Calculated MTBF
Weight
Nom.
13,675,000
5.0
(0.18)
Units
hours
g
(oz.)
Notes & Conditions
2
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
MX(T)10A-12SA SMT Non-Isolated Power Module
Feature Specifications
Characteristic
Remote Enable
Open = On (Logic Low)
Low = Off (Logic High)
Turn-On Delay and Rise Times
Case 1: On/Off Low – Vin Applied
Case 2: Vin Applied, then On/Off Set Low
Case 3: Output Voltage Rise
Sequencing Delay Time
Tracking Accuracy
Output Voltage Overshoot
Overtemperature Protection
Input Undervoltage Lockout
-Turn-on Threshold
-Turn-off Threshold
135
7.45
7.15
10
100
200
200
400
1
Min.
Nom.
Max.
0.4
14
2.5
2.5
3.0
Units
Vdc
Vdc
msec
msec
msec
msec
mV
mV
% Vo, set
°C
V
V
Notes & Conditions
10
µA
max.
1 mA max.
>2.5
(10 %-90 % of Vo setting)
Delay from Vin, min. to application of
voltage on SEQ pin
Power Up: 2 V/ms
Power Down: 1 V/ms
Io max, Vin=5.5, TA=25 °C
See Thermal Consideration section
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
3
MX(T)10A-12SA SMT Non-Isolated Power Module
Characteristic Curves
The curves provided below are typical characteristics for the MX(T)10A-12SA modules at 25
°C.
For any specific test configurations or
any specific test requests, please contact Bourns.
100.0
Efficiency (%)
Efficiency (%)
95.0
90.0
85.0
80.0
75.0
70.0
2
3
4
5
6
7
8
Output Current (A dc)
Vin=14 V
Vin=12 V
Vin=8.3 V
100.0
95.0
90.0
85.0
80.0
75.0
70.0
10
2
3
4
6
7
8
5
Output Current (A dc)
Vin=14 V
Vin=12 V
Vin=8.3 V
9
9
10
Fig. 1 Efficiency vs. Output Current (Vout = 1.2 Vdc )
Fig. 4 Efficiency vs. Output Current (Vout = 2.5 Vdc )
100.0
Efficiency (%)
Efficiency (%)
95.0
90.0
85.0
80.0
75.0
70.0
2
3
4
6
7
8
5
Output Current (A dc)
Vin=14 V
Vin=12 V
Vin=8.3 V
100.0
95.0
90.0
85.0
80.0
75.0
70.0
10
2
3
4
6
7
8
5
Output Current (A dc)
Vin=14 V
Vin=12 V
Vin=8.3 V
9
9
10
Fig. 2 Efficiency vs. Output Current (Vout = 1.5 Vdc )
Fig. 5 Efficiency vs. Output Current (Vout = 3.3 Vdc )
100.0
Efficiency (%)
Efficiency (%)
Vin=14 V
Vin=12 V
Vin=8.3 V
100.0
95.0
90.0
85.0
80.0
75.0
70.0
10
2
3
4
6
7
8
5
Output Current (A dc)
Vin=14 V
Vin=12 V
Vin=8.3 V
95.0
90.0
85.0
80.0
75.0
70.0
2
3
4
6
7
8
5
Output Current (A dc)
9
9
10
Fig. 3 Efficiency vs. Output Current (Vout = 1.8 Vdc )
Fig. 6 Efficiency vs. Output Current (Vout = 5.0 Vdc )
4
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
MX(T)10A-12SA SMT Non-Isolated Power Module
Characteristic Curves (Continued)
5.0
4.5
Output Voltage (Vdc)
Input Current (A)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.
00
1.
40
2.
80
4.
20
5.
60
7.
00
Iin, up
Vout, up
8.
41
9.
81
11
.2
1
12
.6
2
14
.0
1
Output Current
Io (3.2 A/div)
Output Voltage
Vo (200 mV/div)
Output Voltage: 200 mVolt 5
µs
Output Current (3.2 A/Div): 2 Volt 5
µs
Time (5
µs/div)
Fig. 10 Transient Response - 5 A - 10 A Step
(Vo = 3.3 Vdc )
Input Voltage (Vdc )
Fig. 7 Input Voltage vs. Io and Vo
(Vo = 3.3 V, Io = 10 A)
Output Voltage
Vo (200 mV/div)
No Load: 20 mVolt 2.5
µs
Half Load: 20 mVolt 2.5
µs
Full Load: 20 mVolt 2.5
µs
Output Voltage
V (20 mV/div)
Output Current
Io (3.2 A/div)
Output Voltage: 200 mVolt 5
µs
Output Current (3.2 A/Div): 2 Volt 5
µs
Time (2.5
µs/div)
Fig. 8 Typical Output Ripple and Noise
(Vin = 12 V, Vo = 2.5 V, Io = 10 A)
Time (5
µs/div)
Fig. 11 Transient Response - 10 A - 5 A Step
(Vo = 3.3 Vdc )
Output Voltage
V (50 mV/div)
No Load: 50 mVolt 2.5
µs
Half Load: 50 mVolt 2.5
µs
Full Load: 50 mVolt 2.5
µs
Output Current
Io (3.2 A/div)
Output Voltage
Vo (100 mV/div)
Output Voltage: 100 mVolt 10
µs
Output Current (3.2 A/Div): 2 Volt 10
µs
Time (2.5
µs/div)
Fig. 9 Typical Output Ripple and Noise
(Vin = 12 V, Vo = 3.3 V, Io = 10 A)
Time (10
µs/div)
Fig. 12 Transient Response - 5 A - 10 A Step
(Vo = 3.3 Vdc , Cext = 3x100
µF
Polymer Capacitors)
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
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