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PWM

PWM, or Pulse Width Modulation, is an integrated circuit power management device designed to control the outputs of analogue devices with digital signals. These ICs regulate and reduce the electrical signal’s average power, chopped into miniature parts within a wide variety of electrical designs and electronic circuits.

The Function of PWMs: Explained

As electronic circuits are broadly comprised of both analogue and digital signals, their signal forms remain in different states within circuits. In the case of analogue signals, they remain OFF or ON or even in a halfway position. On the other hand, digital signals will either be ON or OFF. The PWM converts the output of a device such as a microcontroller into analogue signals to drive the following analogue component. Devices such as DAC (Digital to Analogue Converter) and ADC (Analogue to Digital Converter) are used to convert the inputs. 

What is a PWM Duty Cycle?

PWM signals feature rectangular pulse waves and have a frequency and a duty cycle. A duty cycle is a percentage (%) that denotes the time intervals the signal is on. For instance, the duty cycle of 50% is the signal’s time period that remains on and off for 50%. 

What are the Different Types of PWD Devices?

Pulse width modulation has the following types.

  • PWM Switching Regulators- Designed to maintain a constant output voltage by feeding back input voltage through a PWM controller
  • PWM Voltage Mode Controllers- designed to work by applying a PWM ramp (Vramp) input and control voltage (Vc).
  • PWM Current Mode Controllers- They produce a PWM ramp by adding a second loop that feeds back to the inductor current.

What are the Common Uses of PWM Devices?

These power management ICs are widely found in:

  • Communication Systems
  • Electric Vehicles
  • Heaters/HVAC
  • LED Lighting
  • Lamps
  • Motors
  • Robotics

Why Choose Enrgtech?

Enrgtech offers a wide range of PWM controllers from the leading brands to serve potential customers. We also provide other state-of-the-art products at the lowest possible prices on the market with efficient delivery services. Visit our website to explore the outstanding collections of customer-oriented electrical and electronic products from the comfort of your home.


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Rohs Verified
SG3525ANG, onsemi
642 In Stock
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25 +
£ 0.73
100 +
£ 0.51
500 +
£ 0.47
Rohs Verified
ICE2QS03GXUMA1, Infineon
Pre Order
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2500 +
£ 0.52
Rohs Verified
NCP12510ASN65T1G, onsemi
4140 In Stock
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3000 +
£ 0.16
Rohs Verified
ISL68201IRZ-T7A, Intersil
533 In Stock
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250 +
£ 2.95
Rohs Verified
NCV1063AD100R2G, onsemi
1498 In Stock
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2500 +
£ 0.63
Renesas Electronics
Rohs Verified
ISL68124IRAZ-T7A, Renesas Electronics
Pre Order
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1 +
£ 6.26
10 +
£ 5.14
50 +
£ 4.70
Rohs Verified
FAN6300HMY, onsemi
4290 In Stock
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2500 +
£ 0.26
Rohs Verified
ICE2QS02GXUMA1, Infineon
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2500 +
£ 0.46
Rohs Verified
MIC21LV32YML-TR, Microchip
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3300 +
£ 1.03
Rohs Verified
MIC21LV33YML-TR, Microchip
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3300 +
£ 1.11
Renesas Electronics
ISL95870BIRZ, Renesas Electronics
748 In Stock
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75 +
£ 1.64
ICE3BS03LJGXUMA1, Infineon
Pre Order
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2500 +
£ 0.48
NCP1236BD100R2G, onsemi
5377 In Stock
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2 +
£ 0.57
20 +
£ 0.49
200 +
£ 0.43
Renesas Electronics
ISL6227CAZ, Renesas Electronics
462 In Stock
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1 +
£ 5.37
10 +
£ 4.82
25 +
£ 4.55
BM2P241W-Z, ROHM
98 In Stock
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5 +
£ 1.37
50 +
£ 1.30
100 +
£ 1.21
DiodesZetex
AP3108LSS9-13, DiodesZetex
3998 In Stock
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4000 +
£ 0.25
Renesas Electronics
ISL78226ANZ, Renesas Electronics
158 In Stock
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160 +
£ 5.53
Microchip
HV9120P-G, Microchip
1703 In Stock
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5 +
£ 1.74
Microchip
HV9123NG-G, Microchip
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£ 2.14
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£ 2.07
100 +
£ 2.00
Microchip
MCP1630V-E/MS, Microchip
268 In Stock
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5 +
£ 0.78
Analog Devices
ADP2301AUJZ-R7, Analog Devices
2896 In Stock
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2 +
£ 0.86
Analog Devices
ADP2303ARDZ-5.0-R7, Analog Devices
79 In Stock
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1 +
£ 1.34
ICE3BR0665JXKLA1, Infineon
8 In Stock
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£ 2.69
20 +
£ 2.42
50 +
£ 2.26
Microchip
HV9120NG-G, Microchip
78 In Stock
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£ 1.95
25 +
£ 1.90
100 +
£ 1.83
Microchip
HV9112NG-G, Microchip
156 In Stock
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£ 2.30
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£ 2.02
100 +
£ 1.82
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New Items
New items
UC3842BNG, ON Semiconductor

UC3842BNG, ON Semiconductor

IC REG CTRLR BST FLYBK ISO 8-DIP
New items
ISL95870BIRZ, Renesas Electronics

ISL95870BIRZ, Renesas Electronics

The Renesas Electronics single phase synchronous buck PWM regulator is low-cost solutions for applications requiring dynamically selected slew-rate controlled output voltages. The soft-start and dynamic set point slew-rates are capacitor programmed. Output remote sense Automatic diode emulation mode for highest efficiency Power good monitor for soft start and fault detection
New items
NCP1236BD100R2G, onsemi

NCP1236BD100R2G, onsemi

AC-DC Off-Line Controllers, NCP/NCV Series, ON Semiconductor Power supply secondary side, synchronous rectification controllers. Fixed frequency flyback and forward PWM controllers.
New items
SG3525ANG, onsemi

SG3525ANG, onsemi

DC-DC Controllers, ON Semiconductor Current mode and voltage mode DC-DC controllers for power conversion circuits.
New items
FAN65004B, onsemi

FAN65004B, onsemi

FAN65004B is a wide VIN highly efficient synchronous buck regulator, with integrated high side and low side power MOSFETs. The device incorporates a fixed frequency voltage mode PWM controller supporting a wide voltage range from 4.5 V to 65 V and can handle continuous currents up to 6 A. FAN65004B includes a 0.67% accurate reference voltage to achieve tight regulation. The switching frequency can be programmed from 100 kHz to 1 Mhz. Supports wide range of applications Allows for optimization between size, efficiency, and maximum duty cycle Maintain voltage accuracy Best Efficiency at heavy loads and also at light loads Fully protected against voltage, current and temperature faults Improves efficiency by reducing power loss
New items
MIC2133YML-TR, Microchip

MIC2133YML-TR, Microchip

The Microchip constant on-time, dual phase, synchronous buck controller featuring a unique adaptive on-time control architecture with HyperLight Load® and phase shedding features enabled. It operates over an input supply range from 4.5V to 36V and can be used to supply up to 50A of output current. The output voltage is adjustable down to 0.6V with an ensured accuracy of ±1%. 0.6V internal reference with ±1% accuracy Novel ripple injection method to allow greater than 50% duty cycle operation Secondary LDO to improve system efficiency Droop feature to support adaptive voltage positioning (AVP) for improved load transient response Product Features Input Voltage Range: 4.5V to 75V Input Down to 2V when VDD = 5V from External Supply Adjustable Output Voltage from 0.6V to 28V 0.6V Internal Reference with ±1% Accuracy ±0.5% Reference Accuracy for -40°C to 105°C HyperLight Load® and Automatic Phase Shedding 100 kHz to 1 MHz Switching Frequency per Phase High-Voltage Internal 5V LDO for Single-Supply Operation Droop Feature to Support Adaptive Voltage Positioning (AVP) Programmable Current Limit and Hiccup Mode Short-Circuit Protection Thermal Shutdown with Hysteresis -40°C to +125°C Junction Temperature Range Programmable Current Limit and Hiccup Mode Short-Circuit Protection Remote Sense Amplifier for Tight Output Regulation Supports Start-up to Pre-Bias Output External Programmable Soft Start to Reduce Inrush Current Accurate Current Balancing Between Phases Compact Size 5 mm x 5 mm 32-Pin VQFN Package
New items
KA3525A, onsemi

KA3525A, onsemi

PWM (Pulse Width Modulation) Controllers, Fairchild Semiconductor
New items
MAX1640EEE+, Maxim Integrated

MAX1640EEE+, Maxim Integrated

IC SW-MODE CUR SOURCE ADJ 16QSOP
New items
ISL6227CAZ, Renesas Electronics

ISL6227CAZ, Renesas Electronics

The Renesas Electronics dual PWM controller with DDR option delivers high efficiency precision voltage regulation from two synchronous buck DC/DC converters. It was designed especially to provide power regulation for DDR memory, chipsets, graphics and other system electronics in notebook PCs. Under voltage lock out on VCC pin Power good, overcurrent, overvoltage, under voltage protection for both channels Pb-Free Available (RoHS compliant)
New items
BM2P241W-Z, ROHM

BM2P241W-Z, ROHM

The ROHM PWM type DC or DC converter for AC or DC provides an optimum system for all products that include an electrical outlet. It enables simpler design of a high effective converter specializing in non-isolation. By a built-in startup circuit that tolerates 650 V, this IC contributes to low power consumption. A current detection resistor as internal device realizes the small power supply designs. Since a current mode control is utilized, the current can be restricted in each cycle and an excellent performance is demonstrated in the bandwidth and transient response. The switching frequency is fixed to 65 kHz. A frequency hopping function is also on chip, and it contributes to low EMI. In addition, a built-in Super Junction MOSFET which tolerates 650 V makes the design easy. PWM Current Mode Method Frequency Hopping Function Burst Operation at Light Load Built-in 650 V Startup Circuit Built-in 650 V Super Junction MOSFET VCC UVLO (Under Voltage Lockout) VCC OVP (Over Voltage Protection) Over Current Detection Function per Cycle Soft Start Function
New items
AP3108LSS9-13, DiodesZetex

AP3108LSS9-13, DiodesZetex

The DiodesZetex makes a current mode PWM controller specially designed for offline power supply that requires ultra-low standby power, high-power density and comprehensive protection. The AP3108LS coordinating with Diodes Incorporated’s secondary side controller, such as the AP4320, can be applied in the situation that requires for constant CC and constant CV. The AP3108LS integrates a VCC LDO circuitry, allowing the LDO to regulate the wide range VCC_IN, which is rectified from auxiliary winding to an acceptable value. This makes the AP3108LS a good choice in wide range output voltage application. There are also versatile system protections provided by AP3108LS, such as secondary side OVP, secondary side UVP, constant output current limit, cycle-by-cycle current limit, brown-out protection, programmable external OTP, etc. Current mode control, high-voltage start-up Embedded VCC LDO to guarantee wide range output voltage Constant, low output current in output short situation Low VCC charge current reduces standby power in output short situation Internal Slope Compensation and soft start during start-up process
New items
UC3843BD1R2G, onsemi

UC3843BD1R2G, onsemi

AC-DC Off-Line Controllers, UC Series, ON Semiconductor
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like PWM and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding PWM or any other product.
This depends on the PWM individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for PWM and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including PWM.
Yes. We keep updating our stock frequently and if a product like PWM is not in stock then we will let you know.