RPX-1.5 Datasheet

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RPX-1.5
DC/DC Converter
Features
Power
Module
• Buck regulator power module with integrated
shielded inductor
• 36VDC input voltage, 1.5A output current
• SCP, OCP, OTP, and UVLO protection
• 3.0 x 5.0mm low profile QFN package
• Flip-chip technology for improved thermal
management
• Enable, power good, soft start, and sync functions
3
1.5 Amp
QFN
Package
R
E
C
O
M
C
O
N
V
E
R
T
E
R
S
C
O
M
P
L
I
A
N
T
P
R
O
D
U
C
T
S
RoHS
2
+
compliant
10 from 10
R
E
C
O
M
C
O
N
V
E
R
T
E
R
S
C
O
M
P
L
I
A
N
T
P
R
O
D
U
C
T
S
REACH
compliant
Selection Guide
Notes:
Note1: Refer to “SAFE OPERATING AREA”
Note2: Efficiency tested at VIN= 12VDC, full load, and VOUT= 3.3VDC
Model Numbering
Output Current Packaging (3)
RPX-1.5-__
Part
Number
Input
Voltage Range
[VDC]
Output
Voltage (1)
[VDC]
Output
Current
[mA]
Efficiency
typ. (2)
[%]
RPX-1.5 4 - 36 0.8 - 30 1500 87
ABSOLUTE MAXIMUM RATINGS (exceeding these ratings may damage the device)
Parameter Symbol Min. Typ. Max.
Absolute Maximum Voltage
VIN -0.3VDC 40VDC
VSW -0.3VDC VIN + 0.3VDC
VOUT -0.3VDC VIN + 0.3VDC
VBST VSW + 6VDC
others -0.3VDC 6VDC
Maximum Continuous Power Losses (4) @ TAMB = 25°C 2.7W
Junction Temperature TJ150°C
Lead Temperature 260°C
Storage Temperature -65°C +150°C
Specifications
Notes:
Note4: Maximum power losses = (150-Tamb)/46. Exceeding this value will activate thermal protection.
https://www.recom-power.com/pdf
/Eval-Boards/RPX-1.5-EVM-1.pdf
Description
The RPX-1.5 is a buck converter with an integrated inductor in a compact 3mm x 5mm x 1.6mm
thermally-enhanced QFN package. The input range is from 4 to 36VDC, allowing 5V, 12V, or 24V supply
voltages to be used. The output voltage can be set with two resistors in the range from 0.8 up to 30VDC.
The output current is up to 1.5A and is fully protected against continuous short-circuits, output overcurrent,
or over-temperature faults.
Notes:
Note3: Add suffix “-R” for tape and reel packaging
Add suffix “-CT” for bag packaging (refer to“PACKAGING INFORMATION”)
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DC/DC Converter
RPX-1.5
Series
SAFE OPERATING AREA
Specifications
OPERATING CONDITIONS (VIN= 12VDC, TJ= -40°C to +125°C, unless otherwise noted, typical values are at TJ= +25°C)
Parameter Condition Min. Typ. Max.
Input Voltage Range 4VDC 36VDC
VIN Under-voltage Lockout Threshold Rising 3VDC 3.5VDC 3.8VDC
VIN Under-voltage Lockout Threshold Hysteresis 330mV
Output Voltage Range refer to “SAFE OPERATING AREA” 0.8VDC 30VDC
Standby Current DC-DC OFF 8µA
Quiescent Current 0.6mA
Switching Frequency 1800kHz 2200kHz 2600kHz
Feedback Voltage TAMB = 25°C
TAMB = -40°C to +125°C
795mV
790mV 807mV 819mV
824mV
Feedback Current VFB= 820mV 10nA 50nA
Rise-time internal soft start 1.7ms
VOUT Vout
FB
VIN
PG
VIN
CTRL
PGS
PG AGND PGND
RPX-1.5
C6
R1
R3
C7
C12 C8C9C10
R4
R2
Typical Application
The typical performance and circuit waveforms are shown in the Typical Performance Characteristics section.
For more device applications, please refer to the related evaluation board datasheet RPX-1.5-EVM-1
0 4 8 12 16 24202 6 10 14 18 26 28 3022
38
30
32
22
24
14
16
34
36
26
28
18
20
10
12
6
8
2
4
0
Input Voltage [VDC]
Output Voltage [VDC]
C6 (CIN) R1 R2 C12 (CFF) (5) R3 R4 (RTRIM) C7-C10 (COUT)
10µF, 50V 100kW100kWVout= 2VDC, 22pF 75kWRefer to “OUTPUT VOLTAGE TRIMMING” 10µF
Notes:
Note5: C12 (CFF) is required for low output voltages (<2VDC)
POWER GOOD OPERATING CONDITIONS (VIN= 12VDC, TJ= -40°C to +125°C, unless otherwise noted, typical values are at TJ= +25°C)
Parameter Condition Min. Typ. Max.
Rising Threshold 0.83VDC 0.88VDC 0.93VDC
Falling Threshold 0.78VDC 0.83VDC 0.88VDC
RECDM R3 Vow R4: EL 3:225
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DC/DC Converter
Specifications
RPX-1.5
Series
OUTPUT VOLTAGE TRIMMING
CTRL AND SYNC OPERATING CONDITIONS (VIN= 12VDC, TJ= -40°C to +125°C, unless otherwise noted, typical values are at TJ= +25°C)
Parameter Condition Min. Typ. Max.
CTRL Rising Threshold 1.2VDC 1.45VDC 1.7VDC
CTRL Falling Threshold 0.8VDC 1VDC 1.3VDC
CTRL Input Current VCTRL= 2VDC 5µA 10µA
CTRL Turn-off Delay 3µs
CTRL Frequency Range 450kHz 2200kHz
THERMAL OPERATING CONDITIONS (VIN= 12VDC, TJ= -40°C to +125°C, unless otherwise noted, typical values are at TJ= +25°C)
Parameter Condition Min. Typ. Max.
Operating Junction Temperature -40°C +125°C
Thermal Impedance
case to ambient 46K/W
junction to case (refer to tc point) 2.2K/W
junction to board (refer to tb point) 17K/W
Thermal Shutdown Junction Temperature= 170°C auto recovery after cool down
Notes:
Note6: Tested with RECOM evaluation module: RPX-1.5-EVM-1
R
4
FB
GND
Trim Resistor R5 equation:
𝑹𝑹𝑹𝑹𝟒𝟒𝟒𝟒 =
𝑅𝑅𝑅𝑅3
𝑉𝑉𝑉𝑉𝑂𝑂𝑂𝑂𝑂𝑂𝑂𝑂𝑂𝑂𝑂𝑂
𝑉𝑉𝑉𝑉𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹
−1
The external resistor divider sets the output voltage (see “Typical Application”). The feedback resistor (R4) sets the feedback loop bandwidth with the
internal compensation capacitor. R3 should be approximately 75kW when VOUT ≥1V. The values for trim resistors shown in trim tables below are according to
standard E96 values; therefore, the specified voltage may slightly vary. R4 can then be calculated with below equation:
Calculation:
Example:
R4= 75k = 87k33W
1.5V -1
0.807V
R4 according to E96 ≈ 86k6
VOUT 1.5V 1.8V 2.5V 3.3V 5V 12V 24V
R4 (E96) ≈86k6 60k4 35k7 24k3 14k3 5k36 2k61
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 1.8VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
continued on next page
Efficiency vs. Output current
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
4.2Vin
5Vin
12Vin
24Vin
36Vin
Thermal Derating
-40 -20 0 20 40 60 80 130120100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
4.2Vin
7Vin
12Vin
24Vin
36Vin
RECDM TS 5:535 vi 3:335 Ambient Tempelature [°C] EL 553:3
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DC/DC Converter
Specifications
RPX-1.5
Series
1.6
1.2
0.8
0.4
1.4
1
0.6
0.2
0
Power Dissipation [W]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
4.2Vin
5Vin
12Vin
24Vin
36Vin
Power Dissipation Deviation vs. Load
1
0
-1
-2
0.5
-0.5
-1.5
-2.5
-3
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
4.2Vin
5Vin
12Vin
24Vin
36Vin
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 1.8VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 3.3VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
Deviation vs. Load
1
0
-1
-2
0.5
-0.5
-1.5
-2.5
-3
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
5Vin
12Vin
24Vin
36Vin
Efficiency vs. Output current
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
5Vin
12Vin
24Vin
36Vin
1.6
1.2
0.8
0.4
1.4
1
0.6
0.2
0
Power Dissipation [W]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
5Vin
12Vin
24Vin
36Vin
Power Dissipation
Thermal Derating
-40 -20 0 20 40 60 80 130120100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
5Vin
7Vin
12Vin
24Vin
36Vin
RECDM EL 3:335 Ambient Temperature [T] E 822;: vi 3:335
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DC/DC Converter
Specifications
RPX-1.5
Series
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 5VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
Efficiency vs. Output current
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
6Vin
12Vin
24Vin
36Vin
Thermal Derating
-40 -20 0 20 40 60 80 130120100
100
80
60
40
90
70
50
30
20
10
0
7Vin
12Vin
24Vin
32Vin
36Vin
Deviation vs. Load
1
0.5
0
-0.5
0.75
0.25
-0.25
-0.75
-1
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
7Vin
12Vin
24Vin
36Vin
1.6
1.2
0.8
0.4
1.4
1
0.6
0.2
0
Power Dissipation [W]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
6Vin
12Vin
24Vin
36Vin
Power Dissipation
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 12VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
continued on next page
Efficiency vs. Output current
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
13.5Vin
15Vin
24Vin
36Vin
Thermal Derating
-40 -20 0 20 40 60 80 130120100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
13.5Vin
15Vin
24Vin
32Vin
36Vin
RECDM 3L =3 EL 3.53:5 EL 555:3
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DC/DC Converter
Specifications
RPX-1.5
Series
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 15VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
Deviation vs. Load
0.8
0.6
0.4
0.2
0.7
0.5
0.3
0.1
0
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
24Vin
28Vin
32Vin
36Vin
Efficiency vs. Output current
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
24Vin
28Vin
32Vin
36Vin
2.4
1.8
1.2
0.6
2.1
1.5
0.9
0.3
0
Power Dissipation [W]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
24Vin
28Vin
32Vin
36Vin
Power Dissipation
Thermal Derating
-40 -20 0 20 40 60 80 130120100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
16.9Vin
18Vin
24Vin
32Vin
36Vin
2.4
1.8
1.2
0.6
2.1
1.5
0.9
0.3
0
Power Dissipation [W]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
13.5Vin
15Vin
24Vin
36Vin
Power Dissipation Deviation vs. Load
1
0.5
0
-0.5
0.75
0.25
-0.25
-0.75
-1
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
15Vin
24Vin
36Vin
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 12VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
RECDM 3.. s... 3: E225 E 5:25
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DC/DC Converter
Specifications
RPX-1.5
Series
TYPICAL PERFORMANCE CHARACTERISTICS (VOUT= 24VDC, TJ= +25°C; tested with RECOM evaluation module: RPX-1.5-EVM-1)
ENVIRONMENTAL
Parameter Condition
Value
ESD human-body model (HBM), ANSI/ESDA/JEDEC JS-001 ±2.5kV
charged-device model (CDM), JEDEC JESD22-C101 ±1kV
Moisture Sensitive Level MSL peak temp. (7) Level 3, 260°C, 168hrs
MTBF according to TR-332, 50% stress G.B. +25°C
+85°C
400000 x 103 hours
6000 x 103 hours
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Standard
RoHS2 RoHS 2011/65EU + AM2015/863
Notes:
Note7: The Moisture Sensitivity Level rating is according to the JEDEC industry standard classifications and peak solder temperature
Deviation vs. Load
0
-0.2
-0.4
-0.6
-0.1
-0.3
-0.5
-0.7
-0.8
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
27Vin
29Vin
32Vin
36Vin
3.5
2.5
1.5
0.5
3
2.0
1.0
0
Power Dissipation [W]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
27Vin
32Vin
36Vin
Power Dissipation
Efficiency vs. Output current
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
27Vin
32Vin
36Vin
Thermal Derating
-40 -20 0 20 40 60 80 130120100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
16.9Vin
18Vin
24Vin
32Vin
36Vin
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DC/DC Converter
Specifications
RPX-1.5
Series
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter Type Value
Material case plastic
Dimension (LxWxH) 3.0 x 5.0 x 1.60mm
Weight 0.095g
Dimension Drawing (mm)
Pad Information
Pad # Function Description
1 PG Output power good. High = Vout at set level, low = Vout
below nominal regulation. Leave floating if not used
2CTRL/
SYNC
Pull high to enable the RPX-1.5. Leave open or connect
to ground to disable the device. Apply external clock to
synchronize switching frequency.
3 FB Feedback input. Used to set the output voltage between
0.8V and 30VDC.
4 PGS Power good source
6,7,8,12 SW
Switch node. Connect 6, 7, and 8 to large copper pad for
optimal heat dissipation.
9,10,11 Vout
Output Voltage. Connect external capacitor between this
pin and GND as close to the pins as possible.
13 DNC Do not connect. Must be soldered to an isolated pad.
5,14,15 GND Ground pins. Connect these pins to the power ground
plane on the PCB
16 Vin
Input Voltage. Connect a low-ESR low-inductance external
bypass capacitor between this pin and GND as close to
the pins as possible
17 DNC
Do not connect. Leave Floating
Tolerances: according to ASME Y14.5M
3.0
5.0
1.60
2X 1.00
2X 1.03
0.20
PIN 1 ID
Index Area
16X 0.25
2X 0.20
2X 0.60
2X 1.40
2X 2.20
2X 0.70
2X 1.70
2X 2.20
1.20
8X 0.60 0.175
1
2
3
6
5
13
1416
12
4
7
9
10
11
8
15
PKG
SYMM
Recommended Footprint Details (Top View)
2X 0.60
0.55
2X 0.20
2X 0.70
2X 1.70
2X 2.20
1.20
2.80
16x 0.25
2X 1.40
2X 2.20
2X 0.50
2X 1.30
2X 1.80
0.175
restricted Area (0.65 x 0.80mm)
8X 0.90
SYMM
PKG
7T
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DC/DC Converter
Specifications
RPX-1.5
Series
SOLDERING
00 100 300200
100
200
155°C
185°C
217°C 217°C
300
Time [s]
Temperature [°C]
Ramp Down Rate: -1~ -5°C/s
Ramp Up Rate: 1-3°C/s
Preheat Temp.: 60-120°C
Peak Temp.: 240-245°C
Peak Time: 10s max.
Ramp up Rate: 1-3°C/s
Melting Time: 30-60s
PREHEAT ZONE COOLING
ACTUAL
HEATING
Soldering temp. graph
Wave or Reflow etc.
Profile Feature PB-Free Assembly
Preheat
minimum Temperature (TS_min) 155°C
maximum Temperature (TS_max) 245°C
Time (tS) 100s-300s
Liquidus
Temperature (TL) 217°C
Time (tL) 30-60s
Peak Temperature (TP) 245°C
Time remaining around Peak Temperature 10s
max Ramp Down Rate (from Ts_max to TP) 5K/s
max Ramp Up Rate 3K/s
max time from 25°C to Peak Temperature (TP) 8min
PCB LAYOUT SUGGESTION
continued on next page
Efficient PCB layout, especially of the input capacitor placement, is critical for stable operation. For best results, refer to Figure 6, and follow the guidelines
below.
1. Connect a large ground plane to GND pins 14 and 15 directly. If the bottom layer is a ground plane, add vias near GND.
2. Ensure that the high-current paths at GND and VIN have short, direct, and wide traces.
3. Place the ceramic input capacitor close to VIN and GND.
4. Keep the connection of the input capacitor and VIN as short and wide as possible.
5. Place the external feedback resistors next to FB.
6. Feedback and switch node should be placed as far away from one another as possible.
1 Pb-Free assembly is recommended according ro JEDEC J-STD020.
2 Ensure that the peak reflow temperature does not exceed 240°C ±5°C
as per JEDEC J-STD020
3 The reflow time period during peak temperature of 240°C ±5°C
should not exceed 30 seconds.
4 Reflow time above liquids (217°C) should not exceed 150 seconds.
5 For solder paste use a standard SAC Alloy such as SAC 305, type 3 or
higher.
6 Other soldering methods (e.g. vapor-phase) are not verified and have
to validate by the customer on his own risk.
VIN VIN GND VOUT LI
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DC/DC Converter
Specifications
RPX-1.5
Series
The
product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer.
The
products
are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or
cause
loss
of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the
unauthorized
use of RECOM products in such safety-critical applications.
PCB LAYOUT SUGGESTION
Bottom ViewTop View
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH)
reel (diameter + width)
tape and reel (carton)
Ø330.0 + 12.0mm height
355.6 x 355.6 x 50.8mm
moisture barrier bag (“-CT”) 100.0 x 100.0 x 30mm
Packaging Quantity tape and reel 500pcs
moisture barrier bag (“-CT”) 10pcs
Tape Width 12mm
Storage Temperature Range -65°C to +150°C