Gamma GM7130HV-12TB5TG 3a step down voltage switching regulator Datasheet

GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Description
Features
GM7130HV series is designed to provide all the
active function for a step-down (buck) switching
regulator, and drives a maximum load current as
high as 3A line and load regulations.
GM7130HV is available in fixed output voltages
of 3.3V, 5V, 12V and a versatile Adjustable
output version.
These regulators are simple to use and require
minimum number of external components. The
features include internal frequency compensation
and a fixed-frequency oscillator.
The GM7130HV is high-efficiency replacements
for popular three-terminal linear regulators, and is
requiring a smaller heat sink or even no need
heat sink.
GM7130HV performs well with standard
inductors from most of manufacturers, and
simplifying the design of switch-mode power
supplies. External shutdown is included with 80
µA (typical) standby current. The output switch
has cycle-by-cycle current limiting as well as
thermal shutdown for full protection under fault
conditions.

3.3V, 5V, 12V and Adjustable output
versions

Adjustable version output voltage range
1.23V to 57V

VOUT accuracy is up to ± 2% under
specified input voltage the output load
conditions

Input voltage range up to 60V

Requires only 4 external components with
High efficiency

TTL shutdown capability, low power
standby mode

Built-in thermal shutdown, current limit
protection

Uses standard inductors

52 kHz fixed frequency internal oscillator
GM7130HV operates at a switching frequency of
52 kHz which allowing smaller size filter
components than what would be needed with
lower frequency switching regulators.
GM7130HV series are available in a standard 5lead TO-220, TO220B and TO263 packages.
Application
Pre-regulator for linear regulators
On-card/board switching regulators
High-efficiency step-down buck regulator
Positive to negative converter (buck-boost)
Typical Application Circuits
Feedback 4
1 VIN
L1
100μH
Output
CIN
100μF
GND
3
2
ON/OFF
5
D1
1N5822
5V
regulated
output,
COUT
680μF
www.gammamicro.com.tw
GM7130HVV2.05
GM7130HV-5.0
7V – 60V
Unregulated
DC Input
1
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Marking Information and Pin Configurations (Top View)
TO-220-5
TO-220B-5
TO-263-5
GM7130HVG
VVAYWW
GM7130HVG
VVAYWW
GM7130HVG
VVAYWW
GM7130HVV2.05
5. ON/OFF
4. Feedback
3. GND
2
2. Output
1. VIN
5. ON/OFF
4. Feedback
3. GND
2. Output
1. VIN
5. ON/OFF
4. Feedback
3. GND
2. Output
1. VIN
G: Green Product
VV: Voltage suffix (15 = 1.5V, 50 = 5.0V…A = Adj)
A: Assembly / Test site code
Y: Year
WW: Week
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Ordering Information
Ordering Number
Output Voltage
Package
Shipping
TO-263-5
50 Units / Tube
TO-263-5
800 Units / Reel
TO-220-5
50 Units / Tube
GM7130HV-ATB5BTG
TO-220-5B
50 Units / Tube
GM7130HV-3.3TA5TG
TO-263-5
50 Units / Tube
TO-263-5
800 Units / Reel
TO-220-5
50 Units / Tube
TO-220-5B
50 Units / Tube
TO-263-5
50 Units / Tube
TO-263-5
800 Units / Reel
TO-220-5
50 Units / Tube
TO-220-5B
50 Units / Tube
TO-263-5
50 Units / Tube
TO-263-5
800 Units / Reel
TO-220-5
50 Units / Tube
TO-220-5B
50 Units / Tube
GM7130HV-ATA5TG
GM7130HV-ATA5RG
Adj
GM7130HV-ATB5TG
GM7130HV-3.3TA5RG
3.3
GM7130HV-3.3TB5TG
GM7130HV-3.3TB5BTG
GM7130HV-5.0TA5TG
GM7130HV-5.0TA5RG
5.0
GM7130HV-5.0TB5TG
GM7130HV-5.0TB5BTG
GM7130HV-12TA5TG
GM7130HV-12TA5RG
GM7130HV-12TB5TG
GM7130HV-12TB5BTG
GM7130HVV2.05
12
3
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Absolute Maximum Ratings (Note 1)
Rating
Value
Unit
Maximum Supply Voltage
63
V
ON/OFF Pin Input Voltage
-0.3 + VIN + 0.3
V
Feedback Pin Voltage
-0.3 + VIN + 0.3
V
-1.0
V
Internally Limited
-
- 65 to 150
°C
+ 150
°C
Operating Temperature Range
- 40 to 125
℃
Minimum EDS Rating (Note 2)
2
kV
+ 260
°C
Output Voltage to Ground (Steady State)
Power Dissipation
Storage Temperature Range
Maximum Junction Temperature
Lead Temperature (Soldering, 10 sec)
Block Diagram
FB
4
VIN
R2*
Regulator
With
Enable
Error
Amplifier
Comparator
R1
1.0K
Gnd
3
VOUT = 3.3V, R2 = 1.7K
VOUT = 5.0V, R2 = 3.1K
VOUT = 12V, R2 = 8.84K
VOUT = ADJ, R1 = OPEN, R2 = 0Ω
GM7130HVV2.05
Driver
5
ON/OFF
1.23V
Reference
52KHz
Oscillator
4
1
Reset
Thermal Shutdown
&
Current Limit
2
VOUT
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Electrical Characteristics: GM7130HV-ADJ
(Specifications with standard type face are for TJ = 25℃, and those with bold face type apply over full Operating Temperature
rage)
Parameter
Feedback
Voltage
Efficiency
Condition (Note 3)
Symbol
VIN = 12V, ILOAD = 0.5A, VOUT = 5V,
Circuit of Fig 2.
8.0V  VIN  60V, 0.5A  ILOAD  3A,
VOUT = 5V, Circuit of Fig 2.
VIN =12V, ILOAD=3.0A, VOUT = 5V
Min
Typ
1.217
VOUT
1.193
Unit
1.243
1.230
1.180
η
Max
V
1.267
1.280
77
%
Electrical Characteristics: GM7130HV-3.3
(Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature
rage)
Parameter
Condition (Note 3)
Symbol
6V  VIN  60V, 0.5A  ILOAD  3A,
VOUT
VIN =12V, ILOAD=3.0A
3.168
η
Max
Unit
3.366
3.300
3.135
Circuit of Fig 2
Efficiency
Typ
3.234
VIN = 12V, ILOAD = 0.5A, Circuit of Fig 2.
Output Voltage
Min
3.432
V
3.465
75
%
Electrical Characteristics: GM7130HV-5.0
(Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature
rage)
Parameter
Condition (Note 3)
Symbol
8V  VIN  60V, 0.5A  ILOAD  3A,
VOUT
VIN =12V, ILOAD=3.0A
4.800
η
Max
Unit
5.100
5.000
4.750
Circuit of Fig 2.
Efficiency
Typ
4.900
VIN = 12V, ILOAD = 0.5A, Circuit of Fig 2.
Output Voltage
Min
5.200
V
5.250
77
%
Electrical Characteristics: GM7130HV-12
(Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature
rage)
Condition (Note 3)
Symbol
15V  VIN  60V, 0.5A  ILOAD  3A,
VOUT
VIN =15V, ILOAD=3.0A
11.52
η
Max
Unit
12.24
12.00
11.40
Circuit of Fig 2.
Efficiency
Typ
11.76
VIN = 25V, ILOAD = 0.5A, Circuit of Fig 2.
Output Voltage
Min
12.48
V
12.60
88
%
GM7130HVV2.05
Parameter
5
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Electrical Characteristics: All Output Voltage Versions
(Specifications with standard type face are for TJ = 25°C, and those with bold face type apply over full Operating Temperature
rage. Unless otherwise specified, VIN = 12V for 3.3V, 5.0V and Adj version, VIN = 25V for 12V version, ILOAD = 500mA)
Parameter
Condition
Symbol
Min
Typ
Feedback Bias
Current
VOUT =5V (Adjustable Version Only)
Ib
-
50
Oscillator
Frequency
(Note 8)
fo
Saturation
Voltage
lOUT = 3A (Notes 4)
VSAT
-
Max Duty Cycle
(ON)
(Note 5)
DC
93
Current Limit
Peak Current (Notes 4, 8)
lCL
Quiescent
Current
Standby
Quiescent
Current
Unit
100
nA
500
47
58
52
42
kHz
63
1.8
1.4
98
%
6.9
3.5
A
7.5
2
lL
Output = -1V (Notes 6, 7)
ON/OFF= 5V (OFF)
-
5.8
Output =0V (Notes 6, 7)
(Note 6)
V
2.0
4.2
Output Leakage
Current
Max
7.5
-
mA
30
lQ
-
5
10
mA
lSTBY
-
50
200
μA
VIH
-
1.2
1.0
Low (ON)
0.8
ON/OFF Pin
V
Logic lnput Level
2.2
High (OFF)
ON/OFF Pin
Input Current
VIL
1.4
-
2.4
VLOGlC = 2.5V (OFF)
IH
12
30
VLOGlC
IL
0
10
= 0.5V (ON)
μA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is intended to be functional but do not
guarantee specific performance limits. For guaranteed specifications and test conditions, see the
Electrical Characteristics.
GM7130HVV2.05
Note 2: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold
type face).
6
Note 3: External components such as the catch diode, inductor, input and output capacitors can affect
switching regulator system performance. When the GM7130HV is used as shown in the Figure 2 test
circuit, system performance will be as shown in system parameters section of Electrical characteristics.
Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output.
Note 5: Feedback pin removed from output and connected to 0V.
Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V,
versions, and +25V for the 12V and 15V versions, to force the output transistor OFF.
Note 7: VIN =40V (60V for high voltage version).
Note 8: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an
overload which causes the regulated output voltage to drop approximately 40% from the nominal output
voltage. This self protections feature lowers the average power dissipation of the IC by lowering the
minimum duty cycle from 5% down to approximately
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Test Circuit and Layout Guidelines
Careful layout is important with any switching regulators. Rapidly switching currents associated with
wiring inductance generate voltage transients which can cause problems. To minimize inductance
and ground loops, the lengths of the leads indicated by heavy lines in Figure 1& 2 below should be
kept as short as possible. Single point grounding (as indicated ) or ground plane construction should
be used for best results. When using the Adjustable version, place the programming resistors as
close as possible to GM7130HV, to keep the sensitive feedback wiring short.
1
4
Feedback
GM7130HV-x.x
VIN
VIN
Unregulatedd
DC Input
2
Output
3
GND
CIN
100μF
5
ON/OFF
L1
100μH
VOUT
D1
D1
MBR360
COUT
1000μF
L
O
A
D
Figure 1 Fixed Ouput Votlage Versions
CIN = 100μF, 75V, Aluminum Electrolytic
COUT = 1000μF, 25V, Aluminum Electrolytic
D1 = Schottky, MBR360
L1 = 100μH
GM7130HV-ADJ
VIN
VIN
Unregulatedd
DC Input
CIN
100μF
3
GND
L1
100μH
VOUT
5.0V
2
VOUT
5
ON/OFF
R2
D1
MBR360
COUT
1000μF
Figure 2 Adjustable Ouput Votlage Versions
CIN = 100μF, 75V, Aluminum Electrolytic
COUT = 1000μF, 25V, Aluminum Electrolytic
D1 = Schottky
L1 = 100μH
VOUT = VREF (1 + R2/R1)
where VREF = 1.23V and R1 is between 1K to 5K
R1
L
O
A
D
GM7130HVV2.05
1
4
FB
7
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Application Hints
Input Capacitors (C IN )
The regulator input pin must be by-passed with at least a 100μF electrolytic capacitor to maintain
stability. The capacitor’s leads must be kept short, and located near GM1730HV. If the operating
temperature range includes temperature below -25°C, the input capacitor value may need to be larger.
With most electrolytic capacitors, the capacitance value decreases and the ESR increase with lower
temperature and age. It is suggested to parallel a ceramic or solid tantalum capacitor to increase the
stability at cold temperature. It is n should be used for best results. When using the Adjustable
version, place the programming resistors as close as possible to GM7130HV, to keep the sensitive
feedback wiring short.
Inductor Selection
All switching regulators have two basic modes of operation: continuous and discontinuous. The
difference between the two types relates to the inductor current, whether it is flowing continuously, or if
it drops to zero for a period of time in the normal switching cycle. Each mode has distinctively different
operating characteristics, which can affect the regulator performance and requirements. The
GM7130HV can be used for both continuous and discontinuous modes of operation.
Inductors are available in different styles such as pot core, toriod, E-frame, bobbin core, etc., as well
as different core materials, such as ferrites and powdered iron. The least expensive, the bobbin core
type, consists of wire wrapped on a ferrite rod core. This type of construction makes for an inexpensive
inductor, but since the magnetic flux is not completely contained within the core, it generates more
electromagnetic interference (EMI). This EMI can cause problems in sensitive circuits, or can give
incorrect scope readings because of induced voltages in the scope probe.
GM7130HVV2.05
An inductor should not be operated beyond its maximum rated current because it may saturate. When
an inductor begins to saturate, the inductance decreases rapidly and the inductor begins to look mainly
a resistor (the DC resistance of the winding). This will cause the switch current to rise very rapidly.
Different inductor types have different saturation characteristics, and this should be kept in mind when
selecting an inductor. The inductor manufacturer’s data sheets include current and energy limits to
avoid inductor saturation.
8
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Package Outline Dimensions – TO-263-5
0.176 – 0.184
(4.47 – 4.67)
0.389– 0.408
(9.88 – 10.18)
0.046 – 0.054
(1.17 – 1.37)
0.061 – 0.069
(1.56 – 1.76)
0.322– 0.339
(8.20 – 8.60)
0.028– 0.036
(0.71 – 0.91)
0.410
(10.41)
0.596– 0.612
(15.14 – 15.54)
7°
0.575
(14.61)
3°
0.200– 0.216
(5.08 – 5.48)
0.092 – 0.108
(2.34 – 2.74)
0 -8°
0.067 Typ.
(1.70)
0.425
(10.8)
0.224– 0.272
(5.70 – 6.90)
0.012 – 0.021
(0.31 – 0.53)
0.042
(1.07)
0.067
(1.70)
0.085
(2.16)
Package Outline Dimensions – TO-220-5
0.048 – 0.052
(1.22 – 1.32)
0.400 + 0.015
0.400 – 0.005
(0.38+ 0.18)
(0.38 +- 0.03)
0.149 – 0.153
(3.78 – 3.89)
0.175 – .185
(4.45 – 4.75)
0.100 – 0.120
(2.54 – 3.05)
0.330 – 0.350
(8.38 – 8.89)
0.525 – 0.555
(13.34 – 14.10)
0.030 – 0.040
(0.76 – 1.02)
0.057 – 0.077
(1.45 – 1.96)
0.105 + 0.010
0.105 – 0.010
(2.67 + 0.25)
(2.67 +- 0.38)
0.015 + 0.007
0.015 – 0.001
(0.38+ 0.18)
(0.38 +- 0.03)
GM7130HVV2.05
0.149 – 0.153
(3.78 – 3.89)
9
GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Ordering Number
GM 7130HV A
APM
Gamma
Micro
Circuit Type
TA5
R
G
Output Voltage
Package Type
Shipping Type
A: Adj
3.3 = 3.3V
5.0 = 5.0V
12 = 12.0V
TA5: TO263-5
TB5: TO-220-5
TB5B: TO-220B-5
R:Taping & Reel
T:Tube
Blank: Pb-free
G: Green
Note:
Pb-free products:

RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020.

Suitable for use in Pb-free soldering processes with 100% matte tin (Sn) plating.
GM7130HVV2.05
Green products:
10

Lead-free (RoHS compliant)

Halogen free(Br or Cl does not exceed 900ppm by weight in homogeneous material and total of
Br and Cl does not exceed 1500ppm by weight)
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